RTN 980 Product Description-(V100R003C02_01)-20110630

OptiX RTN 980 Radio Transmission SystemV100R003C02

Product Description

Issue 01Date 2011-06-30

HUAWEI TECHNOLOGIES CO., LTD.

Copyright Huawei Technologies Co., Ltd. 2011. All rights reserved.No part of this document may be reproduced or transmitted in any form or by any means without prior writtenconsent of Huawei Technologies Co., Ltd. Trademarks and Permissions

and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.All other trademarks and trade names mentioned in this document are the property of their respective holders. NoticeThe purchased products, services and features are stipulated by the contract made between Huawei and thecustomer. All or part of the products, services and features described in this document may not be within thepurchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information,and recommendations in this document are provided "AS IS" without warranties, guarantees or representationsof any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in thepreparation of this document to ensure accuracy of the contents, but all statements, information, andrecommendations in this document do not constitute the warranty of any kind, express or implied. Huawei Technologies Co., Ltd.Address: Huawei Industrial Base

Bantian, LonggangShenzhen 518129People's Republic of China

Website: http://www.huawei.comEmail: [email protected]

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About This Document

Related VersionsThe following table lists the product versions related to this document.

Product Name VersionOptiX RTN 980 V100R003C02iManager U2000 V100R005C00

Intended AudienceThis document is intended for network planning engineers.Familiarity with the basic knowledge related to digital microwave communication technologywill help you apply the information in this document.

Symbol ConventionsThe symbols that may be found in this document are defined as follows.

Symbol Description

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OptiX RTN 980 Radio Transmission SystemProduct Description About This Document


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Symbol Description

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General ConventionsThe general conventions that may be found in this document are defined as follows.

Convention DescriptionTimes New Roman Normal paragraphs are in Times New Roman.Boldface Names of files, directories, folders, and users are in

boldface. For example, log in as user root.Italic Book titles are in italics.Courier New Examples of information displayed on the screen are in

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Update HistoryUpdates in Issue 01 (2011-06-30) Based on Product Version V100R003C02

This document is the first release for the V100R003C02 product version.

About This DocumentOptiX RTN 980 Radio Transmission System

Product Description

iv Huawei Proprietary and ConfidentialCopyright Huawei Technologies Co., Ltd.

Issue 01 (2011-06-30)

Contents

About This Document...................................................................................................................iii1 Introduction.................................................................................................................................1-1

1.1 Network Application.......................................................................................................................................1-21.2 Components.....................................................................................................................................................1-31.3 Radio Link Types............................................................................................................................................1-7

2 Functions and Features..............................................................................................................2-12.1 Microwave Types............................................................................................................................................2-3

2.1.1 SDH/PDH Microwave............................................................................................................................2-32.1.2 Hybrid/Packet Integrated IP Microwave................................................................................................2-4

2.2 Modulation Strategy........................................................................................................................................2-62.2.1 Fixed Modulation...................................................................................................................................2-62.2.2 Adaptive Modulation..............................................................................................................................2-6

2.3 RF Configuration Modes.................................................................................................................................2-82.4 Capacity...........................................................................................................................................................2-8

2.4.1 Air Interface Capacity............................................................................................................................2-92.4.2 Cross-Connect Capacity.......................................................................................................................2-102.4.3 Switching Capacity..............................................................................................................................2-10

2.5 Interfaces.......................................................................................................................................................2-102.5.1 Service Interfaces.................................................................................................................................2-102.5.2 Management and Auxiliary Interfaces.................................................................................................2-11

2.6 Cross-Polarization Interference Cancellation................................................................................................2-132.7 Automatic Transmit Power Control..............................................................................................................2-132.8 MPLS/PWE3 Function..................................................................................................................................2-142.9 Ethernet Service Processing Capability........................................................................................................2-152.10 QoS..............................................................................................................................................................2-172.11 Clock Features.............................................................................................................................................2-172.12 Protection Capability...................................................................................................................................2-182.13 Network Management.................................................................................................................................2-192.14 Easy Installation..........................................................................................................................................2-202.15 Easy Maintenance.......................................................................................................................................2-212.16 Energy Saving.............................................................................................................................................2-222.17 Environmental Protection............................................................................................................................2-22

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3 Product Structure........................................................................................................................3-13.1 System Architecture........................................................................................................................................3-23.2 Hardware Structure......................................................................................................................................... 3-3

3.2.1 IDU.........................................................................................................................................................3-33.2.2 ODU.......................................................................................................................................................3-7

3.3 Software Structure...........................................................................................................................................3-83.3.1 NMS Software........................................................................................................................................3-83.3.2 IDU Software......................................................................................................................................... 3-83.3.3 ODU Software........................................................................................................................................3-9

3.4 Service Signal Processing Flow......................................................................................................................3-93.4.1 SDH/PDH Microwave............................................................................................................................3-93.4.2 Hybrid Microwave...............................................................................................................................3-113.4.3 Packet Microwave................................................................................................................................3-14

4 Networking and Applications.................................................................................................4-14.1 Typical Network Topologies...........................................................................................................................4-2

4.1.1 Multi-directional Nodal Convergence....................................................................................................4-24.1.2 Large-Capacity Microwave Convergence Ring.....................................................................................4-34.1.3 Upstream Networking............................................................................................................................4-4

4.2 Feature Application (MPLS Packet Service)..................................................................................................4-64.2.1 CES Services..........................................................................................................................................4-64.2.2 ATM/IMA Services................................................................................................................................4-94.2.3 Ethernet Services..................................................................................................................................4-10

4.3 Feature Application (Traversing the Original Network)...............................................................................4-114.3.1 Traversing a TDM Network by Using the EoPDH Feature.................................................................4-11

5 Network Management System................................................................................................5-15.1 Network Management Solution...................................................................................................................... 5-25.2 Web LCT.........................................................................................................................................................5-25.3 U2000..............................................................................................................................................................5-3

6 Technical Specifications...........................................................................................................6-16.1 RF Performance...............................................................................................................................................6-2

6.1.1 Microwave Work Modes........................................................................................................................6-26.1.2 Frequency Band......................................................................................................................................6-76.1.3 Receiver Sensitivity..............................................................................................................................6-116.1.4 Distortion Sensitivity............................................................................................................................6-196.1.5 Transceiver Performance......................................................................................................................6-206.1.6 IF Performance.....................................................................................................................................6-266.1.7 Baseband Signal Processing Performance of the Modem....................................................................6-27

6.2 Interface Performance...................................................................................................................................6-276.2.1 SDH Optical Interface Performance.....................................................................................................6-286.2.2 E1 Interface Performance.....................................................................................................................6-296.2.3 Ethernet Interface Performance............................................................................................................6-30

ContentsOptiX RTN 980 Radio Transmission System

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6.2.4 Auxiliary Interface Performance..........................................................................................................6-316.3 Clock Timing and Synchronization Performance.........................................................................................6-336.4 Integrated System Performance....................................................................................................................6-33

A Glossary.....................................................................................................................................A-1A.1 0-9..................................................................................................................................................................A-2A.2 A-E................................................................................................................................................................A-2A.3 F-J................................................................................................................................................................A-11A.4 K-O..............................................................................................................................................................A-16A.5 P-T...............................................................................................................................................................A-22A.6 U-Z..............................................................................................................................................................A-31

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Figures

Figure 1-1 Microwave transmission solution provided by the OptiX RTN 980..................................................1-3Figure 1-2 Appearance of the IDU 980................................................................................................................1-4Figure 1-3 Direct mounting..................................................................................................................................1-6Figure 1-4 Separate mounting..............................................................................................................................1-6Figure 2-1 SDH microwave................................................................................................................................. 2-3Figure 2-2 PDH microwave................................................................................................................................. 2-4Figure 2-3 Hybrid/Packet integrated IP microwave.............................................................................................2-5Figure 2-4 Adaptive modulation.......................................................................................................................... 2-7Figure 2-5 CCDP channel configuration (with the application of the XPIC technology).................................2-13Figure 2-6 Relationship between the RSL and TSL...........................................................................................2-14Figure 3-1 Block diagram.....................................................................................................................................3-2Figure 3-2 IDU slot layout................................................................................................................................... 3-4Figure 3-3 Block diagram of the ODU.................................................................................................................3-7Figure 3-4 Software structure...............................................................................................................................3-8Figure 3-5 Service signal processing flow of the SDH/PDH microwave............................................................3-9Figure 3-6 Service signal processing flow of the Hybrid microwave................................................................3-11Figure 3-7 Flow of service signal processing.....................................................................................................3-14Figure 4-1 Multi-directional Nodal Convergence................................................................................................4-2Figure 4-2 Large-capacity convergence ring........................................................................................................4-3Figure 4-3 Upstream ring network of TDM services...........................................................................................4-4Figure 4-4 Upstream ring network for Ethernet services.....................................................................................4-5Figure 4-5 Upstream ring network of MPLS services......................................................................................... 4-5Figure 4-6 Example of CES services................................................................................................................... 4-7Figure 4-7 Compression of idle 64 kbit/s timeslots in TDM E1 signals..............................................................4-8Figure 4-8 Retiming synchronization mode of CES service clocks.....................................................................4-8Figure 4-9 Adaptive synchronization mode of CES service clocks.....................................................................4-9Figure 4-10 Example of ATM/IMA services ......................................................................................................4-9Figure 4-11 Example of E-Line services............................................................................................................4-11Figure 4-12 Traversing a TDM network using the EoPDH feature...................................................................4-12Figure 5-1 Network management solution for transmission networks................................................................ 5-2Figure 6-1 W-curve............................................................................................................................................6-20

OptiX RTN 980 Radio Transmission SystemProduct Description Figures


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Tables

Table 1-1 Features of the IDU 980.......................................................................................................................1-4Table 1-2 RTN 600 ODUs that the OptiX RTN 980 supports.............................................................................1-5Table 1-3 RTN XMC ODUs that the OptiX RTN 980 supports..........................................................................1-5Table 1-4 Radio link types that the OptiX RTN 980 supports.............................................................................1-7Table 2-1 RF configuration modes.......................................................................................................................2-8Table 2-2 Air interface capacities.........................................................................................................................2-9Table 2-3 Types and number of service interfaces that the system control, switching, and timing board supports.............................................................................................................................................................................2-10Table 2-4 Types and number of service interfaces that each service interface board supports..........................2-11Table 2-5 Types and number of management and auxiliary interfaces .............................................................2-12Table 2-6 Auxiliary services or paths provided by each microwave interface...................................................2-12Table 2-7 MPLS/PWE3 functions......................................................................................................................2-14Table 2-8 Ethernet service processing capability...............................................................................................2-15Table 2-9 QoS features.......................................................................................................................................2-17Table 2-10 Clock features...................................................................................................................................2-18Table 2-11 Protection schemes...........................................................................................................................2-18Table 2-12 DCN information exchange schemes...............................................................................................2-20Table 3-1 Functional units....................................................................................................................................3-2Table 3-2 List of IDU boards............................................................................................................................... 3-4Table 3-3 Service signal processing flow of the SDH/PDH microwave in the transmit direction....................3-10Table 3-4 Service signal processing flow of the SDH/PDH microwave in the receive direction......................3-10Table 3-5 Service signal processing flow of the Hybrid microwave in the transmit direction..........................3-12Table 3-6 Service signal processing flow of the Hybrid microwave in the receive direction............................3-13Table 3-7 Service signal processing in the transmit direction............................................................................3-14Table 3-8 Service signal processing flow in the receive direction.....................................................................3-15Table 6-1 SDH/PDH microwave work modes (IF1 board)..................................................................................6-2Table 6-2 SDH/PDH microwave work modes (ISU2/ISX2 board)..................................................................... 6-3Table 6-3 Integrated IP microwave work modes (IFU2 board/IFX2 board)........................................................6-3Table 6-4 Integrated IP microwave work modes (ISU2/ISX2 board, Native E1 + Ethernet service)..................6-4Table 6-5 Integrated IP microwave work modes (ISU2 board, Native STM-1 + Ethernet service)....................6-6Table 6-6 Integrated IP microwave work modes (ISX2 board, Native STM-1 + Ethernet service)....................6-6Table 6-7 Frequency Band (SP ODU)..................................................................................................................6-7Table 6-8 Frequency band (SPA ODU)............................................................................................................... 6-8Table 6-9 Frequency band (HP ODU)..................................................................................................................6-8

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Table 6-10 Frequency Band (HPA ODU)............................................................................................................6-9Table 6-11 Frequency band (XMC-2 ODU)........................................................................................................6-9Table 6-12 Frequency band (LP ODU)..............................................................................................................6-10Table 6-13 Frequency band (LPA ODU)...........................................................................................................6-10Table 6-14 Frequency band (XMC-1 ODU)......................................................................................................6-10Table 6-15 Typical receiver sensitivity values of the SDH/PDH microwave (i, IF1 board)..............................6-11Table 6-16 Typical receiver sensitivity values of the SDH/PDH microwave (ii, IF1 board)............................6-12Table 6-17 Typical receiver sensitivity values of the SDH microwave (ISU2/ISX2 board).............................6-12Table 6-18 Typical values of the receiver sensitivity of the Integrated IP microwave (i, IFU2 board/IFX2 board).............................................................................................................................................................................6-13Table 6-19 Typical values of the receiver sensitivity of the Integrated IP microwave (ii, IFU2 board/IFX2 board).............................................................................................................................................................................6-14Table 6-20 Typical values of the receiver sensitivity of the Integrated IP microwave (iii, IFU2/IFX2 board).............................................................................................................................................................................6-15Table 6-21 Typical values of the receiver sensitivity of the Integrated IP microwave (iv, IFU2/IFX2 board).............................................................................................................................................................................6-15Table 6-22 Typical values of the receiver sensitivity of the Integrated IP microwave (i, ISU2 board/ISX2 board(non-XPIC mode))...............................................................................................................................................6-16Table 6-23 Typical values of the receiver sensitivity of the Integrated IP microwave (ii, ISU2 board/ISX2 board(non-XPIC mode))...............................................................................................................................................6-17Table 6-24 Typical values of the receiver sensitivity of the Integrated IP microwave (iii, ISU2/ISX2 board).............................................................................................................................................................................6-17Table 6-25 Typical values of the receiver sensitivity of the Integrated IP microwave (iv, ISU2/ISX2 board).............................................................................................................................................................................6-18Table 6-26 Typical values of the receiver sensitivity of the Integrated IP microwave (v, ISU2/ISX2 board).............................................................................................................................................................................6-19Table 6-27 Anti-multipath fading capability......................................................................................................6-19Table 6-28 Transceiver Performance (SP ODU)................................................................................................6-20Table 6-29 Transceiver performance (SPA ODU).............................................................................................6-21Table 6-30 Transceiver performance (HP ODU)...............................................................................................6-22Table 6-31 Frequency Band (HPA ODU)..........................................................................................................6-23Table 6-32 Transceiver performance (XMC-2 ODU)........................................................................................6-23Table 6-33 Transceiver performance (LP ODU)................................................................................................6-25Table 6-34 Frequency band (LPA ODU)...........................................................................................................6-25Table 6-35 Transceiver performance (XMC-1 ODU)........................................................................................6-26Table 6-36 IF performance.................................................................................................................................6-26Table 6-37 Baseband signal processing performance of the modem.................................................................6-27Table 6-38 STM-4 optical interface performance..............................................................................................6-28Table 6-39 STM-1 optical interface performance..............................................................................................6-28Table 6-40 STM-1 electrical interface performance..........................................................................................6-29Table 6-41 E1 interface performance.................................................................................................................6-30Table 6-42 Performance of the GE optical interface .........................................................................................6-30Table 6-43 GE electric interface performance....................................................................................................6-31Table 6-44 FE electric interface performance....................................................................................................6-31Table 6-45 Orderwire interface performance.....................................................................................................6-32

TablesOptiX RTN 980 Radio Transmission System

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Table 6-46 Synchronous data interface performance.........................................................................................6-32Table 6-47 Asynchronous data interface performance.......................................................................................6-32Table 6-48 Wayside service interface performance...........................................................................................6-33Table 6-49 Clock timing and synchronization performance..............................................................................6-33Table 6-50 Dimensions.......................................................................................................................................6-34Table 6-51 Typical weight..................................................................................................................................6-34Table 6-52 Typical power consumption.............................................................................................................6-34Table 6-53 Power Supply...................................................................................................................................6-34Table 6-54 Environment performance................................................................................................................6-35

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1 IntroductionAbout This Chapter

The OptiX RTN 980 is a product in the OptiX RTN 900 radio transmission system series.

1.1 Network ApplicationThe OptiX RTN 900 is a new generation TDM/Hybrid/Packet integrated microwavetransmission system developed by Huawei. It provides a seamless microwave transmissionsolution for mobile communication network or private networks.1.2 ComponentsThe OptiX RTN 980 adopts a split structure. The system consists of the IDU 980 and the ODU.Each ODU is connected to the IDU through an IF cable.1.3 Radio Link TypesThe OptiX RTN 980 provides the radio links of various types in which different IF boards andODUs are configured for diverse microwave application scenarios.

OptiX RTN 980 Radio Transmission SystemProduct Description 1 Introduction


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1.1 Network ApplicationThe OptiX RTN 900 is a new generation TDM/Hybrid/Packet integrated microwavetransmission system developed by Huawei. It provides a seamless microwave transmissionsolution for mobile communication network or private networks.

OptiX RTN 900 Product FamilyThere are three types of OptiX RTN 900 products: OptiX RTN 910, OptiX RTN 950, and OptiXRTN 980. Users can choose the product best suited for their site.l The IDU of the OptiX RTN 910 is 1U high and supports one or two IF boards.l The IDU of the OptiX RTN 950 is 2U high and supports one to six IF boards.l The IDU of the OptiX RTN 980 is 5U high and supports one to fourteen IF boards.

NOTE

All the products in the OptiX RTN 900 series use the same types of IF and service interface boards.

The OptiX RTN 900 series provide a variety of service interfaces and can be installed easily andconfigured flexibly. The OptiX RTN 900 series provide a solution that can integrate TDMmicrowave, Hybrid microwave, and Packet microwave technologies according to thenetworking scheme for the sites, achieving smooth upgrade from TDM microwave to Hybridmicrowave, and from Hybrid microwave to Packet microwave. This solution is able to adapt tochanging service scenarios brought about by evolutions in radio mobile networks. Therefore,this solution meets the transmission requirements of 2G and 3G networks while also allowingfor integration with future LTE and 4G networks.

OptiX RTN 980Figure 1-1 shows the microwave transmission solution provided by the OptiX RTN 980.The OptiX RTN 980 is large-capacity nodal microwave equipment deployed at the convergencelayer. It supports the convergence of up to 14 radio links, and supports multiple protectionschemes.Figure 1-1 shows the microwave transmission solution provided by the OptiX RTN980.

1 IntroductionOptiX RTN 980 Radio Transmission System

Product Description

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Figure 1-1 Microwave transmission solution provided by the OptiX RTN 980

TDM Network(SDH)

STM-1/4STM-1/4

GE

OptiX RTN 980 BSCRNCOptiX RTN 910/950

Radio link Cable/fiber

Regionalbackhaulnetwork

Ethernet Network(Metro)

Raido trassmission network

FE/GE

FE/GE

STM-1/4

ATM

FE/GE

Packet Network(PTN)

NOTE

l In this solution, the OptiX RTN 980 is connected to an RNC and BSC directly or through a regional backhaulnetwork.

l The OptiX RTN 980 provides a wide range of interfaces and service bearer technologies to adapt to theregional backhaul network. The regional backhaul network can be a time-division multiplexing (TDM)network or packet switching network (PSN).l The OptiX RTN 980 supports the Ethernet over PDH (EoPDH) function. Therefore, packet services can

be backhauled through a TDM network.l The OptiX RTN 980 supports the pseudo wire emulation edge-to-edge (PWE3) technology. Therefore,

TDM, ATM, and Ethernet services can be backhauled through a PSN.

1.2 ComponentsThe OptiX RTN 980 adopts a split structure. The system consists of the IDU 980 and the ODU.Each ODU is connected to the IDU through an IF cable.



1-3

IDU 980The IDU 980 is the indoor unit for an OptiX RTN 980 system. It receives and multiplexesservices, performs service processing and IF processing, and provides the system control andcommunications function.Table 1-1 lists the basic features of the IDU 980.

Table 1-1 Features of the IDU 980Item DescriptionChassis height 5UPluggable SupportedNumber of microwavedirections

1 to 14

RF configuration mode 1+0 non-protection configurationN+0 non-protection configuration1+1 protection configurationN+1 protection configuration(N 7)XPIC configuration

Figure 1-2 Appearance of the IDU 980


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ODUThe ODU is the outdoor unit for the OptiX RTN 900. It converts frequencies and amplifiessignals.The OptiX RTN 900 product series can use the RTN 600 ODU and RTN XMC ODU, coveringthe entire frequency band from 6 GHz to 38 GHz.

NOTE

Unlike the other frequency bands that use 14 MHz, 28 MHz, or 56 MHz channel spacing, the 18 GHzfrequency band uses 13.75 MHz, 27.5 MHz, or 55 MHz channel spacing.

Table 1-2 RTN 600 ODUs that the OptiX RTN 980 supportsItem Description

Standard PowerODU

High Power ODU Low Capacity forPDH ODU

ODU type SP, SPA HP, HPA LP, LPAFrequency band 7/8/11/13/15/18/23/

26/38 GHz (SPODU)6/7/8/11/13/15/18/23 GHz (SPA ODU)

6/7/8/10/10.5/11/13/15/18/23/26/28/32/38 GHz (HP)7/8/11/13/15/18/23GHz (HPA)

7/8/11/13/15/18/23GHz (LP)7/8/11/13/15/18/23/26/32/38 GHz (LPA)

Microwavemodulation scheme

QPSK/16QAM/32QAM/64QAM/128QAM/256QAM


QPSK/16QAM

Channel spacing 3.5/7/14/28 MHz 7/14/28/40/56 MHz(6/7/8/10/11/13/15/18/23/26/28/32/38GHz)7/14/28 MHz (10.5GHz)

3.5/7/14/28 MHz

Table 1-3 RTN XMC ODUs that the OptiX RTN 980 supportsItem Description

High Power ODU Low Capacity for PDHODU

ODU type XMC-2 XMC-1Frequency band 7/8/11/13/15/18/23/26/38

GHz7/8/11/13/15/18/23 GHz

Microwave modulationscheme


QPSK/16QAM

Channel spacing 7/14/28/40/56 MHz 3.5/7/14/28 MHz



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There are two methods for mounting the ODU and the antenna: direct mounting and separatemounting.l The direct mounting method is usually used when a small-diameter and single-polarized

antenna is used. In this situation, if one ODU is configured for one antenna, the ODU isdirectly mounted at the back of the antenna. If two ODUs are configured for one antenna,an RF signal combiner/splitter (hence referred to as a hybrid coupler) must be mounted toconnect the ODUs to the antenna. Figure 1-3 illustrates the direct mounting method.

Figure 1-3 Direct mounting

l The separate mounting method is used when a double-polarized antenna or big-diameter

and single-polarized antenna is used. Figure 1-4 shows the separate mounting method. Inthis situation, a hybrid coupler can be mounted (two ODUs share one feed boom).

Figure 1-4 Separate mounting


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NOTE

The OptiX RTN 980 provides an antenna solution that covers the entire frequency band, and supportssingle-polarized antennas and dual-polarized antennas with diameters of 0.3 m to 3.7 m along with thecorresponding feeder system.

1.3 Radio Link TypesThe OptiX RTN 980 provides the radio links of various types in which different IF boards andODUs are configured for diverse microwave application scenarios.

Table 1-4 Radio link types that the OptiX RTN 980 supportsRadio Link Type System Control,

Switching, andTiming Board

IF Board ODU

Low-capacity PDHmicrowave

CSHN IF1 Low capacity forPDH ODU

SDH/PDHmicrowave

CSHN IF1 Standard powerODU or high powerODU

High-capacity SDHmicrowave

CSHN ISU2 Standard powerODU or high powerODU

High-capacity SDHmicrowavesupporting XPIC

CSHN ISX2 Standard powerODU or high powerODU

Hybrid/Packetmicrowave

CSHN IFU2/ISU2 Standard powerODU or high powerODU

Hybrid/Packetmicrowavesupporting XPIC

CSHN IFX2/ISX2 Standard powerODU or high powerODU



1-7

2 Functions and FeaturesAbout This Chapter

The OptiX RTN 980 provides a wide assortment of functions and features to ensure the qualityand efficiency of service transmission.

2.1 Microwave TypesThe microwave type is determined by the IF board and the configured working mode.2.2 Modulation StrategyThe SDH/PDH microwave supports fixed modulation. The Hybrid/Packet microwave supportsfixed modulation and adaptive modulation.2.3 RF Configuration ModesThe OptiX RTN 980 supports 1+0 non-protection configuration, N+0 non-protectionconfiguration, 1+1 protection configuration, N+1 protection configuration, and XPICconfiguration.2.4 CapacityThe OptiX RTN 980 is a high-capacity device.2.5 InterfacesThe OptiX RTN 980 provides a variety of interfaces.2.6 Cross-Polarization Interference CancellationCross-polarization interference cancellation (XPIC) technology is used together with co-channeldual-polarization (CCDP). The application of the two technologies doubles the wireless linkcapacity over the same channel.2.7 Automatic Transmit Power ControlAutomatic transmit power control (ATPC) enables the output power of the transmitter toautomatically trace the level fluctuation at the receive end within the ATPC control range. Thisfeature reduces the interference with neighboring systems and residual BER.2.8 MPLS/PWE3 FunctionThe OptiX RTN 980 uses an MPLS that is optimized for the telecom bearer network as thepacket forwarding mechanism for packet transmission of carrier-class services. The OptiX RTN980 uses PWE3 technology as the service bearer technology to implement MPLS network accessfor various types of services.

OptiX RTN 980 Radio Transmission SystemProduct Description 2 Functions and Features


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2.9 Ethernet Service Processing CapabilityThe OptiX RTN 980 has powerful Ethernet service processing capability.2.10 QoSThe OptiX RTN 980 provides improved quality of service (QoS) and supports the followingeight types of per-hop behaviors (PHBs): BE, AF1, AF2, AF3, AF4, EF, CS6, and CS7.Therefore, network carriers can offer various QoS levels of service guarantees and buildnetworks that carry data, voice, and video services.2.11 Clock FeaturesThe clock features of the OptiX RTN 980 can transport the clock of the mobile communicationnetwork and provide a complete selection of clock protection mechanisms.2.12 Protection CapabilityThe OptiX RTN 980 provides a variety of protection schemes.2.13 Network ManagementThe OptiX RTN 980 supports multiple network management (NM) modes and providescomprehensive NM information exchange schemes.2.14 Easy InstallationThe OptiX RTN 980 supports several installation modes. That is, the installation is flexible andconvenient.2.15 Easy MaintenanceThe OptiX RTN 980 provides several maintenance features that effectively reduce the costsassociated with maintaining the equipment.2.16 Energy SavingThe OptiX RTN 980 uses various types of technologies to reduce the amount of energy that thedevice consumes. The device:2.17 Environmental ProtectionThe OptiX RTN 980 is designed to meet or exceed environmental protection requirements. Theproduct complies with the RoHS directive.

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2.1 Microwave TypesThe microwave type is determined by the IF board and the configured working mode.

2.1.1 SDH/PDH MicrowaveThe SDH microwave refers to the microwave that transmits SDH services. The PDH microwaverefers to the microwave that transmits only PDH services (mainly, the E1 services).2.1.2 Hybrid/Packet Integrated IP MicrowaveThe Hybrid/Packet integrated IP microwave (Integrated IP radio for short) can transmit one typeamong or a combination of Native TDM services, Native Ethernet services, and PWE3 packetservices according to software settings. Therefore, the Integrated IP radio achieves a smoothupgrade from Hybrid microwave to Packet microwave.

2.1.1 SDH/PDH MicrowaveThe SDH microwave refers to the microwave that transmits SDH services. The PDH microwaverefers to the microwave that transmits only PDH services (mainly, the E1 services).

NOTEThe IF1 board can work in TU-12-based PDH microwave mode or STM-1-based SDH microwave mode.The ISU2/ISX2 board can work in SDH mode to support transmission of one STM-1 or two STM-1s.

SDH MicrowaveUnlike conventional SDH microwave equipment, the OptiX RTN 980 has a built-in MADM.The MADM grooms services to the microwave port through cross-connections, maps theservices into the STM-1-based or 2xSTM-1-based microwave frames, and then transmits theframes. With this capability, services are flexibly groomed and the optical network and themicrowave network are seamlessly converged.

Figure 2-1 SDH microwave

ODU

E1

IDU

MADM

SDH radioSDH

OH

OH

PDH MicrowaveUnlike conventional PDH microwave equipment, the OptiX RTN 980 has a built-in MADM.The MADM grooms E1 services to the microwave port for further transmission. With this



2-3

capability, services are flexibly groomed and the optical network and the microwave networkare seamlessly converged.

Figure 2-2 PDH microwave

ODU

E1

IDU

OH MADM

PDH radioSDH

2.1.2 Hybrid/Packet Integrated IP MicrowaveThe Hybrid/Packet integrated IP microwave (Integrated IP radio for short) can transmit one typeamong or a combination of Native TDM services, Native Ethernet services, and PWE3 packetservices according to software settings. Therefore, the Integrated IP radio achieves a smoothupgrade from Hybrid microwave to Packet microwave.IP microwave can transmit packet services and support the AM function. The packet servicestransmitted can be Native Ethernet services or packet services encapsulated in PWE3.Conventional IP microwave is divided into two different types: Hybrid microwave and Packetmicrowave.l Hybrid microwave: Native TDM services and Native Ethernet services can be transmitted

through the air interface.l Packet microwave: TDM services, ATM/IMA services, and Ethernet services after PWE3

encapsulation are transmitted through the air interface.The OptiX RTN 980 supports the Hybrid/Packet integrated IP microwave (integrated IPmicrowave or Integrated IP radio), and can transmit any or several of the following three typesof services: Native TDM, Native Ethernet, and packet services encapsulated in PWE3 based onthe software configuration of the equipment. Therefore, the equipment can support Hybrid andPacket microwave at the same time, and support a smooth upgrade from Hybrid microwave toPacket microwave.

NOTE

General-purpose IF boards, the IFU2, IFX2, ISU2, and ISX2 boards, support Integrated IP radio.

To achieve flexible grooming of TDM services and packet services on the Integrated IP radio,the OptiX RTN 980 is embedded with dual service planes: TDM service processing plane andpacket service processing plane. TDM services and packet services can be flexibly transmittedover the integrated IP microwave, as shown in Figure 2-3.l TDM service processing plane


Product Description


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Performs cross-connections on the incoming TDM services (E1 services or STM-1services), and transmits the services to the microwave ports.

l Packet service processing planePerforms PWE3 emulation on the incoming services (E1 services, ATM/IMA services, andEthernet services), encapsulates them into the MPLS packets, and transmits the Ethernetframes that bear the MPLS packets to the microwave ports. Ethernet services are directlytransmitted to the microwave ports in Native mode after Layer 2 switching.

Native TDM services, MPLS packets, or Native Ethernet services need to be groomed to themicrowave port, encapsulated into microwave frames, and then transmitted on microwave links.The Integrated IP radio serves as Hybrid microwave when TDM services are scheduled to themicrowave port over the TDM service processing plane and Ethernet services are scheduled tothe microwave port over the packet service processing plane; the Integrated IP radio serves asPacket microwave when all services are encapsulated into MPLS/PWE3 packets on the packetservice processing plane and then scheduled to the microwave port.

Figure 2-3 Hybrid/Packet integrated IP microwave

ODU

IDU

TDMcross-connect

matrixE1

STM-1/4

IMA E1

FE/GE

Packetswitching

PWE3

Layer2Proccess

Hybrid radio

Mixed service in evolution

Pure Packet radioThe Integrated IP radio supports smooth upgrade

Native Ehternet

Native TDM channel (E1 or STM-1)

MPLStunnel

ATM PWE3ETHPWE3

Native TDM channel (E1 or STM-1)

TDM PWE3 (CES E1)

MPLStunnel

ATM PWE3TDM PWE3 (CES E1)

ETHPWE3

The Hybrid/Packet integrated IP microwave has the following features:



2-5

l Transmits one, or several of the TDM services, MPLS PWE3 services, and Native Ethernetservices.

l Supports the AM function. E1 services and packet services can be configured with priority.When AM is switched to the reference mode, the services with higher priority aretransmitted with preference.

2.2 Modulation StrategyThe SDH/PDH microwave supports fixed modulation. The Hybrid/Packet microwave supportsfixed modulation and adaptive modulation.

2.2.1 Fixed ModulationFixed modulation refers to a modulation policy in which a modulation scheme is adoptedinvariably to provide constant air interface bandwidth for a running radio link.2.2.2 Adaptive ModulationThe adaptive modulation (AM) technology adjusts the modulation scheme automatically basedon channel quality.

2.2.1 Fixed ModulationFixed modulation refers to a modulation policy in which a modulation scheme is adoptedinvariably to provide constant air interface bandwidth for a running radio link.When the OptiX RTN 980 uses fixed modulation, the modulation scheme and the channelspacing can be set by using software.l The SDH/PDH radio link uses fixed modulation.l The Integrated IP radio link supports fixed modulation. Various combinations of

modulation schemes and channel spacings can be set.

2.2.2 Adaptive ModulationThe adaptive modulation (AM) technology adjusts the modulation scheme automatically basedon channel quality.When the AM technology is adopted, in the case of the same channel spacing, the microwaveservice bandwidth varies according to the modulation scheme; the higher the modulationefficiency, the higher the bandwidth of the transmitted services.l When the channel quality is good (such as on days when weather conditions are favorable),

the equipment adopts a high-efficiency modulation scheme to transmit more user services.This improves transmission efficiency and spectrum utilization of the system.

l When the channel quality deteriorates (such as on days with adverse weather), theequipment adopts a low-efficiency modulation scheme to transmit only higher-priorityservices within the available bandwidth while discarding lower-priority services. Thismethod improves anti-interference capabilities of the radio link, which helps ensure thelink availability for higher-priority services.

In Integrated IP radio mode, the equipment supports the AM technology. With configurablepriorities for E1 services and packet services, the transmission is controlled based on the servicebandwidth and QoS policies corresponding to the current modulation scheme. The highest-priority services are transmitted with precedence.


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Issue 01 (2011-06-30)

NOTE

In Integrated IP radio mode, when the equipment transmits STM-1 services and packet services at the sametime, STM-1 services have highest priority and their transmission is ensured.

l Priorities of E1 servicesThe priorities of E1 services are assigned based on the number of E1 services that eachmodulation scheme can transmit. When modulation scheme switching occurs, only the E1services whose number is specified in the new modulation scheme can be transmitted andthe excess E1 services are discarded.

l Priorities of packet servicesWith the QoS technology, packet services are scheduled to queues with different priorities.The services in different queues are transmitted to the microwave port after running thequeue scheduling algorithm. When modulation scheme switching occurs, certain queuesmay be congested due to insufficient capacity at the air interface. As a result, certain servicesor all the services in these queues are discarded.

Figure 2-4 shows the change in services brought by the AM technology. The orange partindicates E1 services. The blue part indicates packet services. The closer the service is to theoutside of the cylinder in the figure, the lower the service priority. Under all channel conditions,the service capacity varies according to the modulation scheme. When the channel conditionsare unfavorable (during adverse weather conditions), lower-priority services are discarded.

Figure 2-4 Adaptive modulation

ChannelCapability

E1 Services256QAM

32QAM

QPSK

256QAM

128QAM

32QAM

128QAM

64QAM

64QAM

16QAM

16QAM

EthernetServices

The AM technology used by the OptiX RTN 980 has the following characteristics:



2-7

l The AM technology uses the QPSK, 16QAM, 32QAM, 64QAM, 128QAM, and 256QAMmodulation schemes.

l The lowest-efficiency modulation scheme (also called reference scheme or modulationscheme of guaranteed capacity) and the highest-efficiency modulation scheme (also callednominal scheme or modulation scheme of full capacity) used by the AM can be configured.

l In AM, when modulation schemes are switched, the transmit frequency, receive frequency,and channel spacing remain unchanged.

l In AM, modulation schemes are switched step-by-step.l In AM, modulation scheme switching is hitless. When the modulation scheme is

downshifted, high-priority services will not be affected when low-priority services arediscarded. The switching is successful even when 100 dB/s channel fast fading occurs.

2.3 RF Configuration ModesThe OptiX RTN 980 supports 1+0 non-protection configuration, N+0 non-protectionconfiguration, 1+1 protection configuration, N+1 protection configuration, and XPICconfiguration.Table 2-1 lists the supported RF link configuration modes.

Table 2-1 RF configuration modesConfiguration Mode Maximum Number of Configurations1+0 non-protection configuration 141+1 protection configuration (1+1 HSB/FD/SD)

7

N+0 non-protection configuration (N 14) 7N+1 protection configuration (N 7) 7XPIC configuration 7NOTEl 1+0 configuration in N directions is also called Nx(1+0) configuration.l When two radio links in 1+0 non-protection configuration form a microwave ring network, the specific

RF configuration (namely, east and west configuration) is formed. On a Hybrid microwave ringnetwork, SNCP can be configured for SDH/PDH services and ERPS can be configured for Ethernetservices. On a packet microwave ring network, MPLS APS or PW APS can be configured for packetservices.

l PDH microwave does not support N+1 protection or XPIC configuration.l Two XPIC workgroups can form the XPIC 1+1 protection configuration.

2.4 CapacityThe OptiX RTN 980 is a high-capacity device.

2.4.1 Air Interface Capacity


Product Description


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The microwave air interface capacity depends on the IF board, ODU type, and microwaveworking mode.2.4.2 Cross-Connect CapacityThe OptiX RTN 980 has a built-in MADM and provides 128x128 VC-4 higher order cross-connections and VC-12/VC-3 lower order cross-connections equivalent to 32x32 VC-4s.2.4.3 Switching CapacityThe OptiX RTN 980 has a built-in packet processing platform with the switching capacity of22 Gbit/s.

2.4.1 Air Interface CapacityThe microwave air interface capacity depends on the IF board, ODU type, and microwaveworking mode.Table 2-2 lists the microwave air interface capacities that the OptiX RTN 980 supports.

Table 2-2 Air interface capacitiesRadioLink

IF Board Maximum AirInterfaceCapacity

XPICConfiguration

Remarks

PDH IF1 53xE1 Notsupported

Supports 16xE1s when the low-capacity PDH ODU is used.

SDH IF1 1xSTM-1 Notsupported

-

SDH ISU2 2xSTM-1 Notsupported

-

ISX2 2xSTM-1 Supported The XPIC function is provided usingtwo ISX2 boards.

IPmicrowave (NativeEthernetthroughput)

IFU2 420 Mbit/s Notsupported

-

IFX2 410 Mbit/s Supported The XPIC function is provided usingtwo IFX2 boards.

ISU2 456 Mbit/s Notsupported

-

ISX2 456 Mbit/s Supported The XPIC function is provided usingtwo ISX2 boards.

NOTEThe XPIC function doubles the service capacity of the microwave channel at the same frequencybandwidth.



2-9

2.4.2 Cross-Connect CapacityThe OptiX RTN 980 has a built-in MADM and provides 128x128 VC-4 higher order cross-connections and VC-12/VC-3 lower order cross-connections equivalent to 32x32 VC-4s.

2.4.3 Switching CapacityThe OptiX RTN 980 has a built-in packet processing platform with the switching capacity of22 Gbit/s.

2.5 InterfacesThe OptiX RTN 980 provides a variety of interfaces.2.5.1 Service InterfacesThe OptiX RTN 980 provides the interfaces that converge SDH services and Ethernet serviceson the system control, switching, and timing board, and it is able to provide a wide-assortmentof service interfaces by configuring appropriate service interface boards.2.5.2 Management and Auxiliary InterfacesThe OptiX RTN 980 provides the management and auxiliary interfaces through the systemcontrol, switching, and timing board and the auxiliary board.

2.5.1 Service InterfacesThe OptiX RTN 980 provides the interfaces that converge SDH services and Ethernet serviceson the system control, switching, and timing board, and it is able to provide a wide-assortmentof service interfaces by configuring appropriate service interface boards.Table 2-3 lists the types and number of service interfaces that the system control, switching,and timing board supports for the OptiX RTN 980.

Table 2-3 Types and number of service interfaces that the system control, switching, and timingboard supports

System Control,Switching, and TimingBoard

Service Interface Quantity

CSHN GE electrical interface(RJ45): 10/100/1000BASE-T(X) orGE optical interface (SFP):1000BASE-SX, 1000BASE-LX

2

STM-4 optical interface(SFP), orSTM-1 optical interface(SFP)

2


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Table 2-4 lists the types and number of service interfaces that each service interface boardsupports for the OptiX RTN 980.

Table 2-4 Types and number of service interfaces that each service interface board supportsService Interface Board Service Interface QuantityEM6T/EM6TA FE electrical interface

(RJ45): 10/100BASE-T(X)4

GE electrical interface(RJ45): 10/100/1000BASE-T(X)

2

EM6F/EM6FA FE electrical interface(RJ45): 10/100BASE-T(X)

4

GE electrical interface (SFP):10/100/1000BASE-T(X) orGE optical interface (SFP):1000BASE-SX, 1000BASE-LX

2

EFP8 FE electrical interface(RJ45): 10/100BASE-T(X)

8

SP3S 75-ohm or 120-ohm E1interface

16

SP3D 75-ohm or 120-ohm E1interface

32

SL1D STM-1 electrical interface(SFP) orSTM-1 optical interface(SFP): Ie-1, S-1.1, L-1.1, andL-1.2

2

ML1 75-ohm or 120-ohm SmartE1 interface: supports CESE1, IMA E1, or Fractional E1

16

MD1 75-ohm or 120-ohm SmartE1 interface: supports CESE1, IMA E1, or Fractional E1

32

2.5.2 Management and Auxiliary InterfacesThe OptiX RTN 980 provides the management and auxiliary interfaces through the systemcontrol, switching, and timing board and the auxiliary board.



2-11

Table 2-5 Types and number of management and auxiliary interfacesInterface Description QuantityExternal clockinterface

Combined 120-ohm 2,048 kbit/s or 2,048 kHz clockinput and output interface

1

Managementinterface

10/100BASE-T(X) NM interface 1NM serial interface 110/100BASE-T(X) NE cascading interface 1

Auxiliaryinterface

Orderwire interface 1RS-232 asynchronous data interface 164 kbit/s synchronous data interface 1Wayside E1 interface 1

Alarm interface Alarm input/output interface Four inputs andtwo outputs

NOTE

l The external clock interface and the wayside E1 interface are combined into one physical interface.This interface can also transparently transmit the DCC bytes, orderwire overhead bytes, andsynchronous/asynchronous data overhead bytes. However, this interface can implement only onefunction at a time.

l The 64 kbit/s synchronous data interface can also transparently transmit an orderwire byte, but cannottransmit the synchronous data in this case.

l The CSHN board provides the external clock interface and the management interface. The AUX boardprovides the auxiliary interface and the alarm interface.

l The number of external clock interfaces or the number of management interfaces listed in the table isthe number of interfaces provided by one CST/CSH board.

Auxiliary services and NM messages are transmitted by overhead bytes over a radio link. Fordetails, see Table 2-6.

Table 2-6 Auxiliary services or paths provided by each microwave interfaceService/Message Type Microwave Frame Overhead

Quantity ofPaths

Path Rate

Asynchronous data service 1 19.2 kbit/sSynchronous data service 1 64 kbit/sOrderwire phone service 1 64 kbit/sWayside E1 service 1 2048 kbit/s


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Service/Message Type Microwave Frame OverheadQuantity ofPaths

Path Rate

DCC path 1 64 kbit/s (in the PDH radio link whichthe capacity is lower than 16xE1)192 kbit/s (in the PDH radio link whichthe capacity is not lower than 16xE1)192 kbit/s (in Integrated IP radio link)192 kbit/s, 576kbit/s, or 768kbit/s (in theSDH radio link)

2.6 Cross-Polarization Interference CancellationCross-polarization interference cancellation (XPIC) technology is used together with co-channeldual-polarization (CCDP). The application of the two technologies doubles the wireless linkcapacity over the same channel.CCDP transmission adopts a horizontally polarized wave and a vertically polarized wave on onechannel to transmit two channels of signals. Ideally, for CCDP transmissions, there will not beany interference between the two orthogonal signals although they are on the same frequency.In actual practice, despite the orthogonality of the two signals, interference between the signalsinevitably occurs due to cross-polarization discrimination (XPD) of the antenna and channeldegradation. To cancel the interference, XPIC technology is used to receive signals horizontallyand vertically. The signals in the two directions are then processed and the original signals arerecovered from interfered signals.

Figure 2-5 CCDP channel configuration (with the application of the XPIC technology)

HV

Modem ODU 1

ODU 2

f1

f1

ODU 1

ODU 2

f1

f1

Site A Site B

f1

Modem

Modem

Modem

Service

Service

Service

Service

2.7 Automatic Transmit Power ControlAutomatic transmit power control (ATPC) enables the output power of the transmitter toautomatically trace the level fluctuation at the receive end within the ATPC control range. Thisfeature reduces the interference with neighboring systems and residual BER.



2-13

Figure 2-6 Relationship between the RSL and TSL

T

Up-fading

Down-fading2 dB

TSL/RSL

TSL

RSL2 dBCentral value of theATPC upper

threshold and theATPC lower threshold

2.8 MPLS/PWE3 FunctionThe OptiX RTN 980 uses an MPLS that is optimized for the telecom bearer network as thepacket forwarding mechanism for packet transmission of carrier-class services. The OptiX RTN980 uses PWE3 technology as the service bearer technology to implement MPLS network accessfor various types of services.

Table 2-7 MPLS/PWE3 functionsFunction and Feature DescriptionMPLS tunnel Setup mode Static LSPs

Protection 1:1 MPLS tunnel APSOAM Supports the following OAM functions:

l MPLS OAM that complies with ITU-T Y.1710 and ITU-T Y.1711

l LSP ping and LSP traceroute functionsPWE3 TDM PWE3 Emulation

modeSupports the SAToP emulation andCESoPSN emulation of E1 services.

Packetloading time

125 s to 5000 s

Jittercompensation bufferingtime

375 s to 16000 s


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Function and Feature DescriptionATM PWE3 Mapping

modeSupports one-to-one and N-to-one VCC/VPCmapping.

Maximumnumber ofconcatenatedcells

31

Cellconcatenation wait time

125 s to 50000 s

ETH PWE3 Encapsulation mode

Supports direct encapsulation andencapsulation by adding tags.

Service type Supports E-Line services.Setup mode Static PWsNumbers of PWs Supports a maximum of 1024 PWs.Protection 1:1 PW APSOAM Supports the following OAM functions:

l VCCVl PW OAM that complies with ITU-T Y.

1710 and ITU-T Y.1711.l PW ping and PW traceroute functions

MS-PW SupportedConfigurable bandwidth Supported

2.9 Ethernet Service Processing CapabilityThe OptiX RTN 980 has powerful Ethernet service processing capability.

Table 2-8 Ethernet service processing capabilityItem DescriptionEthernet servicetype

E-Line and E-LAN

Range ofmaximum framelength

1518 bytes to 9600 bytes



2-15

Item DescriptionVLAN l Adds, deletes, and switches VLAN tags that comply with IEEE

802.1q/p, and forwards packets based on VLAN tags.l Processes packets based on the port tag attribute (Tag/Hybrid/

Access).l The VLAN ID ranges from 1 to 4094.

MAC address l The E-LAN service supports the MAC address self learningcapability in two learning modes: SVL and IVL.

l MAC addresses can be filtered; that is, MAC addresses can beblacklisted.

l Static MAC address entries can be set.l The capacity of the MAC address table is 16 k (including static

entities).l The MAC address aging time can be configured.

Spanning tree Supports the MSTP protocol, and generates only the Common andInternal Spanning Tree (CIST). The functions of the MSTP protocol areequal to those of the RSTP protocol.

Link aggregation Supported for the FE/GE port and microwave port. Supports manualaggregation and static aggregation, as well as load sharing and non-loadsharing. The load sharing algorithm is implemented based on the hashof the MAC address, IP address, or MPLS label.

ERPS Supports G.8032compliant ring network protection for Ethernetservices.

LPT Disables the remote Ethernet port that is connected to the user equipmentwhen the transmission network or local port fails.

QoS Supports QoS. For details, see 2.10 QoS.Traffic controlfunction

Supports the IEEE 802.3x-complaint traffic control function.

ETH-OAM Supports IEEE 802.1ag- and IEEE 802.3ah-compliant ETH-OAMfunction.

Ethernetperformancemonitoring

Supports IETF RFC2819compliant RMON performance monitoring.

SynchronousEthernet

Supports G.8261 and G.8262compliant synchronous Ethernet.

EoPDH Supported. The EFP8 board provides the EoPDH function.


Product Description


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NOTE

l The E-Line service is an Ethernet private line service. The OptiX RTN 980 supports the private line servicebased on the Port, Port+VLAN, and Port+QinQ. A maximum of 1024 E-Line services are supported. TheE-Line service can be carried on PWs.

l The E-LAN service is an Ethernet local area network (LAN) service. The OptiX RTN 980 supports the E-LAN service based on the 802.1d bridge, 802.1q bridge, and 802.1ad bridge. The bridge supports a maximumof 1024 logical ports.

2.10 QoSThe OptiX RTN 980 provides improved quality of service (QoS) and supports the followingeight types of per-hop behaviors (PHBs): BE, AF1, AF2, AF3, AF4, EF, CS6, and CS7.Therefore, network carriers can offer various QoS levels of service guarantees and buildnetworks that carry data, voice, and video services.

Table 2-9 QoS featuresFeature PerformanceDiffServ l For Ethernet services, supports mapping the Ethernet service into

different PHB service levels based on the C-VLAN priority, S-VLANpriority, IP DSCP value, and MPLS EXP value.

l For ATM services, supports flexible mapping between the ATMservice categories (CBR, UBR, UBR+, rtVBR, and nrtVBR) andPHB service levels.

l For CES services, the PHB service level of each CES service can beset manually (EF by default).

Trafficclassification

Supports classifying traffic based on the Port, C-VLAN ID, S-VLANID, 802.1p priority of the C-VLAN/S-VLAN packet, or DSCP.

Traffic policing Supports flow-based traffic policing and the setting of PIR and CIR insteps of 64 kbit/s.

Queue scheduling l Each Ethernet port or Integrated IP radio port supports eight levelsof priority scheduling.

l Flexibly sets the queue scheduling scheme for each Ethernet port andIntegrated IP radio port. The queue scheduling modes include SP, SP+WRR, and WRR.

Traffic shaping l Supports the shaping for the specified port, priority queue, or serviceflow.

l Supports a step of 64 kbit/s for the PIR and CIR.Buffer capacity 12 Mbit

2.11 Clock FeaturesThe clock features of the OptiX RTN 980 can transport the clock of the mobile communicationnetwork and provide a complete selection of clock protection mechanisms.



2-17

Table 2-10 lists the clock features that the OptiX RTN 980 supports.

Table 2-10 Clock featuresItem DescriptionEquipment clock Supports the three modes as defined in ITU-

T G.813: locked, holdover, and free-run.Clock source Supports the following clock sources:

l SDH line clockl PDH tributary clockl Radio link clockl Synchronous Ethernet clockl 2048 kbit/s or 2048 kHz external clock

SSM protocol/Extended SSM protocol Supported. SSM information can betransmitted in the following modes:l SDH linel SDH radio linkl Hybrid/Packet radio linkl Synchronization Ethernetl External clock interface (not supporting

the extended SSM protocol)Tributary clock l Supports the re-timing function of the

tributary.l Supports the transparent transmission of

E1 clocks.l Supports CES ACR clocks.

Output of the external clock Supported (120-ohm interface complyingwith G.703, 2 Mbit/s or 2 MHz mode)

2.12 Protection CapabilityThe OptiX RTN 980 provides a variety of protection schemes.

Table 2-11 Protection schemesItem DescriptionEquipment-levelprotection

Power input 1+1 hot backupInternal powermodule

1+1 hot backup

Control, switching,and timing board

1+1 hot backup


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Item DescriptionRadio links 1+1 HSB/SD/FD protection

N+1 protectionNetwork-levelprotection

MPLS MPLS tunnel 1:1 protectionPW PW 1:1 protectionEthernet LAG protection (including FE/GE ports and

radio links)ERPS protection (including FE/GE ports andradio links)MSTP protection (including FE/GE ports andradio links)

ATM over E1 IMA protectionTDM services SNCP (including radio links and SDH lines)STM-1 1+1 or 1:N linear multiplex section protection

(MSP)STM-4 1+1 or 1:1 linear MSP

Two-fiber bi-directional MSP ring

2.13 Network ManagementThe OptiX RTN 980 supports multiple network management (NM) modes and providescomprehensive NM information exchange schemes.

NM ModeThe OptiX RTN 980 supports the following functions:l Uses the iManager Web LCT to manage one local NE or one remote NE on a per-NE basis.l Uses the OptiX iManager U2000 to manage all OptiX RTN NEs on the transmission

network and the NEs of Huawei optical transmission products in a concentrated manner.The OptiX iManager U2000 is also able to manage transmission networks in a unifiedmanner.

l Uses the SNMP agent to query alarms and performance events.

NM Information Exchange SchemesThe OptiX RTN 980 supports inband DCN and outband DCN.



2-19

Table 2-12 DCN information exchange schemesItem SpecificationsDCNchannel

DCCbyte

PDHmicrowave

One or three DCC bytes that are defined by Huawei

Integrated IPradio

Three DCC bytes that are defined by Huawei

SDHmicrowave

D1-D3, D4-D12, or D1-D12 bytes

SDH line D1-D3, D4-D12, or D1-D12 bytesNetwork managementinterface

Supports one network management Ethernetinterface or one network management Ethernetcascade interface.

External clock interface Supports the transparent transmission of DCC bytesthrough the external clock interface.

InbandDCN

Radio link The inband DCN channel is marked with the VLANtag and its bandwidth is configurable.

FE/GEinterface

The inband DCN channel is marked with the VLANtag and its bandwidth is configurable.

Networkmanagementprotocol

HWECC protocol SupportedIP protocols SupportedOSI protocols SupportedL2 DCN Supported

2.14 Easy InstallationThe OptiX RTN 980 supports several installation modes. That is, the installation is flexible andconvenient.The IDU can be installed on the following types of cabinets and surfaces:l In a 300 mm ETSI cabinetl In a 600 mm ETSI cabinetl In a 450 mm 19-inch cabinetl In a 600 mm 19-inch cabinetl In an open cabinetThe ODU supports two installation modes: direct mounting and separate mounting.


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2.15 Easy MaintenanceThe OptiX RTN 980 provides several maintenance features that effectively reduce the costsassociated with maintaining the equipment.

Manager and Monitoringl The OptiX RTN 980 supports the unified management of the microwave transmission

network and the optical transmission network at the network layer using the iManagerU2000.

l The OptiX RTN 980 reports a variety of alarms and performance events.l The OptiX RTN 980 reports RMON performance events.l The OptiX RTN 980 supports the monitoring and the graphic display of key radio

transmission performance specifications such as the microwave transmit power, the RSSI,and signal to noise ratio (SNR).

l The OptiX RTN 980 supports the monitoring and graphic display of Ethernet performancespecifications such as port traffic and bandwidth utilization.

Hardware Maintenancel Each board of the IDU has running and alarm status indicators.l All the indicators and cable interfaces of the IDU are on the front panel.l The integrated control, switching, and timing board, IF board, service board, and fan board

support hot swapping.

Looping and Testingl The OptiX RTN 980 supports the ETH OAM function, including IEEE 802.1ag OAM and

IEEE 802.3ah OAM.l The OptiX RTN 980 supports the MPLS OAM function and LSP ping/traceroute.l The OptiX RTN 980 supports the PW OAM function and PW ping/traceroute.l The OptiX RTN 980 supports various loopback functions of service ports and IF ports.l The OptiX RTN 980 has a built-in test system. Users can perform a PRBS test on an IF

port even when no testing tool is available.

Data Backupl The OptiX RTN 980 supports periodic backup and restoration of the NE database remotely

using the U2000.l The CF card that stores the data configuration file and the software can be replaced on site.

Therefore, users can load the data or upgrade the software by replacing the CF card.l Two sets of software and data are stored in the flash memory of the control, switching, and

timing board to facilitate smooth upgrades.



2-21

Software Upgradel The OptiX RTN 980 supports remote loading of the NE software and data using the U2000

to provide a complete NE upgrade solution. Therefore, the entire network can be upgradedrapidly.

l The OptiX RTN 980 supports the NSF function. When a warm reset is performed for theNE software, SDH/PDH services and E-Line services are not interrupted.

l The OptiX RTN 980 supports the hot patch loading function. Users can upgrade thesoftware without interrupting services.

l The OptiX RTN 980 supports software version rollback. In the event of a software upgradefailure, the original software can be recovered which will also restore the original servicesof the system.

2.16 Energy SavingThe OptiX RTN 980 uses various types of technologies to reduce the amount of energy that thedevice consumes. The device:l Uses a streamlined scheme for board design.l Replaces ordinary chips with ASIC chips that consume less power.l Uses high-efficiency power modules.l Supports intelligent adjustment of the fan speed that dissipates heat in a timely manner,

reduces power consumption, and minimizes noise.l Shuts down idle FE/GE ports and SFP optical modules.

2.17 Environmental ProtectionThe OptiX RTN 980 is designed to meet or exceed environmental protection requirements. Theproduct complies with the RoHS directive.l The OptiX RTN 980 undergoes a compulsory packing process that limits the size of the

package containing the equipment and accessories to three times that of the equipmentdimensions.

l The product is designed for easy unpacking. In addition, all hazardous substances containedin the packaging decompose quickly.

l Every plastic component that weighs over 25 g is labeled according to the standards of ISO11469 and ISO 1043-1 to ISO 1043-4. All components and packages of the equipment areprovided with standard labels for recycling.

l Plugs and connectors are easy to find and the associated operations can be performed usingstandard tools.

l All the accompanying materials (such as labels) are easy to remove. Certain types ofidentifying information (such as silkscreens) are printed on the front panel or chassis.


Product Description


Issue 01 (2011-06-30)

3 Product StructureAbout This Chapter

This chapter describes the system architecture, hardware architecture, and software architectureof the product, in addition to how the system processes service signals.

3.1 System ArchitectureThe OptiX RTN 980 consists of a series of functional units, including the service interface unit,timeslot cross-connect unit, packet switching unit, IF unit, control unit, clock unit, auxiliaryinterface unit, fan unit, power unit, and ODU.3.2 Hardware StructureThe OptiX RTN 980 adopts a split structure. The system consists of the IDU 980 and the ODU.An ODU is connected to the IDU 980 through an IF cable. The IF cable transmits IF servicesignals and the O&M signals of the ODU and also supplies -48 V DC power to the ODU.3.3 Software StructureThe OptiX RTN 980 software consists of the NMS software, IDU software, and ODU software.3.4 Service Signal Processing FlowThe flows for transmitting the SDH/PDH microwave signals, Hybrid microwave signals, andpacket microwave signals are different.

OptiX RTN 980 Radio Transmission SystemProduct Description 3 Product Structure


3-1

3.1 System ArchitectureThe OptiX RTN 980 consists of a series of functional units, including the service interface unit,timeslot cross-connect unit, packet switching unit, IF unit, control unit, clock unit, auxiliaryinterface unit, fan unit, power unit, and ODU.

Figure 3-1 Block diagram

Sync/Async dataExternal alarm

Packetswitching

unit

IF unit

ODU

E1(TDM/ATM)

-48V/-60V DC

IDU

FE/GE

Ethernetsignal

Timeslotcross-

connectunit

VC-4signal

Orderwire

Serviceinterface

unit

Control andoverhead bus

Fanunit

Clockunit

Controlunit

Auxiliaryinterface

unitPower

unit

External clockinterface

NM interface

Ethernetsignal

VC-4signal

IF signal

RFsignal

Antenna

STM-1/4

Table 3-1 Functional unitsFunctional Unit FunctionService interfaceunit

l Accesses TDM E1 signals.l Access ATM/IMA E1 signals, and demultiplex ATM services from

ATM/IMA E1 signals.l Accesses STM-1/4 signals.l Accesses FE/GE signals.l Performs E1/ATM/Ethernet service emulation based on PWE3.

Timeslot cross-connect unit

Provides the cross-connect function and grooms TDM services.

3 Product StructureOptiX RTN 980 Radio Transmission System

Product Description


Issue 01 (2011-06-30)

Functional Unit FunctionPacket switchingunit

l Processes Ethernet services and forwards packets.l Processes MPLS labels and forwards packets.l Processes PW labels and forwards packets.

IF unit l Maps service signals to microwave frame signals and demapsmicrowave frame signals to service signals.

l Performs conversion between microwave frame signals and IFanalog signal

Documents

RTN 980 Product Description-(V100R003C02_01)-20110630