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www.sunrisetelecom.com
Technology Overview
SS7 is a globally adopted protocol for
out-of-band signaling systems, and
supports critical applications such as:
• interaction with network databases
• mobile services
• network maintenance and
administration
• advanced call features such as call
waiting, call forwarding, three-way
calling, congestion and priority
management, toll-free applications
and toll services
• database information exchange
between network elements and
wireless services such as wireless
roaming and mobile subscriber
authentication
The network elements involved in
SS7 networks, such as SSPs (Signaling
Switching Points), STPs (Signaling
Transfer Points) and SCPs (Signaling
Control Points) are usually connected
in a redundant topology to ensure
signaling integrity and availability even
if one or more signaling links fails.
SUNRISE TELECOM
SS7 Simulation & TestingSimulation Suite for SS7 Calls & Traffic Generation
Application Note
Sunrise Telecom
SS7 Simulation
Platform Solutions
SS7 is now merging with TCP/IP to
allow integration between traditional
telephony and Internet-Intranet
networks by transporting voice and
video in IP packet-based format.
The Sunrise Telecom Solution
Sunrise Telecom has developed a
comprehensive set of emulation suites
to test different protocols for PSTN
including ISDN, SS7, and Analog.
This Application Note addresses the SS7
simulation suite.
The current hardware platforms that
support the SS7 Simulation suite are:
• NeTracker® / 3GMaster® 1000-DX and
6000-QX
SS7 Simulation Suite
In contrast to other protocol analyzers
on the market, Sunrise Telecom’s
solutions offer not only full-featured
protocol analysis, but integrated SS7
simulation as well.
NeTracker & 3GMaster
� SS7 Simulat ion & Test ing
This allows the user to simulate realistic traffic to run over
the network (or equipment) being tested while at the same
time monitoring all the traffic and performing measure-
ments such as call tracing, protocol decoding, traffic statis-
tics, Call Details Record (CDR) generation, network traffic
analysis and even performance response measurements.
Supported Protocols
The suite supports the following protocols:
• ITU/ETSI ISUP
• ANSI ISUP
• China ISUP
General Features: capabilities
NeTracker, 3GMaster and STT-MSA platforms support the
following features:
• From 1 to 3� E1/T1 trunks
• From 31 to 99� simultaneous real speech calls
• Up to 3� programmable Traffic Destinations
(OPC-DPC couples)
• SP-to-SP simulation
• 3� programmable linksets
• �56 signaling links per test
General Features
Configuration
Thanks to their intuitive and easy-to-use GUIs, configura-
tion of point codes, signaling links, link-sets, called/calling
numbers and other parameters necessary to simulate SPs on
the NeTracker or STT-MSA takes just a few minutes, rather
than hours.
The SS7 simulation suite supports the following features:
• Programmable Phone Numbers per Traffic Destination,
on external files
• National and International call profiles
• Programmable Release
Cause Codes
• Selectable CIC as Incom-
ing, Outgoing or Bi-direc-
tional
• Sequential or random use
of CIC and Phone Numbers
• Programmable number of
calls per second (CPS) per
Traffic Destination
• Programmable ANSI Carrier Identification Code
- Symbolic names for signaling links and for linksets
• Programmable Call Profiles with:
- Traffic type: either Terminated or Originated Calls or
both
- Call duration
- Idle time between Calls
- Calls per second
- Enable/Disable Service Script function (to generate
audio traffic)
• Random selection of activation-deactivation time
• User-programmable parameters for the main signaling
messages
• Selectable incoming call behavior
Simulation Modes
The following simulation modes are available:
• SP Simulation: generates from one to more than two
millions ISUP calls per hour to test / stress the signaling
elements in an SS7 network. The equipment is well-
suited to test the System under Test (SuT) under virtually
any signaling traffic load condition.
• SP Simulation with Bearer channels (Trunk Tester): allows
testing over the signaling and the voice (TDM) channels
by sending pre-recorded .wav files over the time slots
used as traffic channels or used for sending/receiving
tones. User can select and program the Bearer channels.
This simulation mode supports from 350,000 to over
1,700,000 calls (with speech) per hour, depending on call
duration and the QoS testing performed.
Traffic model setup
Example of a complex scenario
3www.sunrisetelecom.com
Sending Voice: service script function
The Service Script function allows users to generate voice
traffic using pre-recorded .wav files or customized audio
files on the PCM, to simulate real voice conversation or
tones (DTMF) generation/reception. The same audio file can
be transmitted several
times in the same audio
call. Audio files can also
be transmitted and re-
ceived back for voice path
testing. Voice samples are
based on G.711. DTMF
tones can be transmitted
and received for testing
automated voice services.
Intrusive QoS Measurement
The Service Script also allows
intrusive Quality of Service measurements.
Loop-back voice calls are generated so that audio files are
sent and then received back.
Comparing the source audio files and received audio files,
it is possible to evaluate the voice quality using the PESQ
algorithm thus providing a MOS score for each call.
Non-Intrusive QoS Measurement
The NiQA (Non-intrusive Quality Assessment) algorithm is
designed to assess the listening quality of live customer
traffic. It is also possible to measure and analyze voice
impairments over G.711 voice streams into PCM time slots.
SS7 Simulation Results
When the simulation is running, the SS7 simulation suite
provides a unique set of analysis tools that includes:
Trace
Protocol Trace with full message decoding, custom trace
and graphical ladder diagrams.
Call Detail Record
CDRs are provided for each call generated and/or received.
The CDR-to-frame function automatically recovers all the
related signaling frames and shows the entire call flow in a
graphical format while the Frame-to-CDR function auto-
matically recovers the CDR related to a selected signaling
message. Audio Playback function is available for each call
for which the recording was enabled.
Statistics
A complete set of statistics (in tabular and graphical for-
mats) covers all the main protocol events:
• Signaling messages: a dedicated statistic is provided for
every signaling protocol stack (MTP�, MTP3, ISUP)
• Calls: a dedicated statistic allows for call completion
analysis
• Disconnection causes: several dedicated statistics provide
reasons why some calls or sessions were not successfully
established
• Signaling links: dedicated statistics provide information
on signaling link utilization and physical layer alarms.
Graphical display shows status of all signaling links,
whether in-service
or out-of-service.
• QoS: statistics on
jitter and MOS
scores are based
on programmable
thresholds
Example of a script
A CDR and its frames
Statistics and charts
© �006 Sunrise Telecom Incorporated. All rights reserved. Specifications subject to change without notice. All product and company names are trademarks of their respective corporations.
Sunrise Telecom San Jose, Modena, and Taiwan facilities are ISO 9001 certified. Do not reproduce, redistribute, or repost without written permission from Sunrise Telecom. REV.�0� July �008
For more information or a directory of sales offices: [email protected] www.sunrisetelecom.com
Signal Analyzer
The Signal Analyzer Package allows post analysis of the
audio files recorded over the unit. The package includes:
• Complete signal spectrum analysis
• Signal comparison capabilities
• 3D signal represen-
tation
• Scripting language
for programming
analysis
Analysis Tools: Filters And Triggers
Filters are available for both Trace and CDRs. Any number
of filters with multiple conditions can be set. Triggers allow
creation of an advanced trap system that combines proto-
col events, counters and timers. Triggers are easily config-
ured with a graphical editor.
Applications
The SS7 ISUP Simulation suite has several potential ap-
plications for product designers, manufacturers and service
providers. The main applications include:
• NGN switch and Gateway installations
• Equipment in production environments
• Call Completion analysis
• Call Route testing
• Verification of telephone-matrix: SPs or PBX
• Testing of VoIP, CTI and SS7 Gateways
• Perform end-to-end QoS testing by running PESQ algo-
rithms over the sent and received speech files
Ordering Information
Suites and Protocol Packages
Part Number Details
OPT-SS7-TT Signaling Point Emulator with ISUP Call Simulation with Voice Traffic Generation over the Bearer channels. Includes the service script environment to create interac-tive tones and audio files send and receive sequences
Options
Part Number Details
OPT-PESQ Intrusive QoS Analysis based on ITU P.862 (PESQ) algorithm
OPT-NiQA Non-Intrusive Impairments Measurement and Analysis over PSTN (TDM flows) and VoIP (RTP flows) with an algorithm based on Psytechnics’ technology used in ITU P.563
OPT-SIG-AN Signal Analyzer Package for post analysis of the audio files recorded over the unit
All other suites, protocol packages, options & accessories:
Please contact your local Distributor or Sales Representative.
Signal Analyzer