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ISSUEISSUE
Fixed Network Curriculum
Development Section
Fixed Network Curriculum
Development Section
OSC002009 ISDNOSC002009 ISDN
2.12.1
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ObjectivesObjectives
Understand the concept and structure
of ISDN
Understand Hardware Configuration
and Data Setting of ISDN of C&C08
Upon completion of this course,you will be able to:
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Course ContentsCourse Contents
Chapter 1 Concept of ISDN
Chapter 2 Application of ISDN in C&C08
Chapter 3 Data Setting
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ISDNISDN
with ISDN, both the voice phone and the computer may be served by the existing phone line, and the need for a second line and the need for a modem is eliminated.
Why we choose ISDN?Why we choose ISDN?
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Integrated Services Digital NetworkIntegrated Services Digital Network
Integrated Services Digital Network
The evolution of ISDN is based on the existing telecommunication
networks .
ISDN will provide end-to-end digital connectivity.
ISDN is intended to handle a variety of services including both voice
and non voice via standard user interfaces.
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Three preconditions:Three preconditions:
Digital transmission trunks Digital transmission trunks
Digital switching system Digital switching system
CommonCommon channelchannel signaling signaling system (CCS7) system (CCS7)
ISDNISDN
Existing NetworkExisting Network
Based on the existing NetworkBased on the existing Network
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The analog-to digital conversion occurs at the subscriber 's premises, and not at the exchange.A total digital path can then be made between two subscribers.A path through the network can be made which is suitable for both data and voice
End-to-end digital connectivityEnd-to-end digital connectivity
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The user can access the network via a series of unified user - network interfaces to enjoy various services
Standard User-network interfaceStandard User-network interface
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User-to-Network signaling
DSS1 ( ISDN Digital Subscriber Signaling No.1 ) is used to transfer the
control signals between network and the user terminals.
Network Signaling
ISUP( ISDN User Part) is used on the interoffice trunks.
User-to-user signaling
UUS( User-User Signaling) is used for the end-to-end message between two
user terminals and no dedicated channel is required for UUS and just in virtue of
DSS1 and ISUP.
ISDN Signaling TypeISDN Signaling Type
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TATE2
NT1NT2TE1 S T U
R S
Reference Point Functional Grouping
ISDN User AccessISDN User Access
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NT1
The main points of U-interface is to transfer digital signals on the existing 2-wire subscriber loop, reducing the transmission loss as its best ability. So multilevel scheme is a desirable solution.
U InterfaceU Interface
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Binary System Voltage
10 £ «3V
11 £ «1V
01 £ 1V
00 £ 3V
2B1Q Coding2B1Q Coding
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TheS-interfaceis4Wireinterfaceforasinglesubscriber termination of TE1 equipment.TheT-interfaceisalso4wireinterfacetoterminateNT2 equipment.When NT2 does not exist, S- and T- interface are integrated as one entity, the so-called S/T interface.
NT1NT2TE1 S T U
S/T interfaceS/T interface
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TATE2R S
The R-interface is a 2-wire interface that connects non-standard ISDN equipment (TE2 equipment) to the TA. There are many types of interface for the R-interface ( for example, an RS-232C or a 2-wire telephone line).
R InterfaceR Interface
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TA
TE1
NT1
TE2
LE
U
R S
S / T
Physical line termination at the subscriber's premise.Performs 2/4 wires conversion.Locally powered or remotely powered by the switch.
NT1NT1
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NT1NT2TE1 S T U
NT2 is an intelligent device, meaning that it does more than just providing physical interfaces. NT2 functions may include switching functions, concentration functions and some layer 2 and layer 3 protocol processing functions. The ISPBX and LAN router are NT2 devices.
NT2NT2
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NT1NT2TE1 S T U
TE1 refers to devices that support the standard ISDN interface. This means the devices uses 4 wires. TE1 is the standard ISDN terminal, such as ISDN phone set, ISDN PC, G4 Fax , Video telephone and so on.
TE1TE1
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TATE2R S
TA mainly acts as a velocity adapter and protocol conversion with S interface on the one end and various non-ISDN interfaces on the other end.
TATA
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Two Types :
BRI: Based on the telephone line
PRI: Based on the PCM
UNIUNI
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Channel
A B-channel is a 64 kbps channel in two directions and can be used for the voice and data on circuit switched basis.The main purpose of D-channel is to transport the signaling and control information between the subscriber equipment and the exchange in packet form.
ChannelsChannels
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D 16: 16Kbps ( BRI) D 16: 16Kbps ( BRI) D 64: 64kbps ( PRI) D 64: 64kbps ( PRI)
D ChannelD Channel
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B
D
B
The BRA is a digital stream of 144kb/s, which flows over two
wires between the subscriber equipment and the exchange.
The term 2B+D is used to characterize the BRA.
BRABRA
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BD
B
B
B
B
B
B
BBB
B
B
B
B
BB
BB
B
B
BB
B
PRA can be used for ISPBX or for access server (equipment for Internet service provider). The PRA consists of 32 64-kb/s channels divided into 30 B-channels, 1 D-channel and 1 control channel.
PRAPRA
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DSL
MPU
PRA
NOD LPRA
LPN7
ISUP
BNET
30B+D
2B+D
HW
HW HW
HW
HW
No7 Trunk
NOD Inner Bus
ISDN and C&C08 SwitchISDN and C&C08 Switch
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N/TDSL
BRA
SMThe BRA port is provided by the DSL and eight BRA ports per card.DSL is compatible with ASL. The former uses even equipment number.
BRABRA
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LAN RouterDTF
SM
PRA interface is provided by DTF board. Two PRA interfaces per DTF board. It is used to connect router, access server or ISDN-PABX.DSS1 of PRA interfaces are carried in TS16, the LPRA board will undertake data link layer function.
PRAPRA
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ISUP
LE LE
In the case of using ISUP as the inter office signaling, DTF
board should be configured as ISUP and LPN7 board is
indispensable.
Refer to the chapter of trunk data for details.
Network Interface : ISUPNetwork Interface : ISUP
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Course ContentsCourse Contents
Chapter 1 Concept of ISDN
Chapter 2 Application of ISDN in C&C08
Chapter 3 Data Setting
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ADD/ADB DSL
ADD
ISDNDAT
define the service attributes of ISDN
ADD DNSEG
ADD CNACLD
ADD CALLSRC
How to Add DSL Subscriber?How to Add DSL Subscriber?
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Press the buttons below to learn the details of adding a digital subscriber.
ADD ISDNDATADD ISDNDAT
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ADD DSLADD DSL
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Press the buttons below to learn the details of adding a digital subscriber.
ADD MSNADD MSN
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