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(Scripted ISUP Emulation)

MAPS™ SS7 Software Ver 4.8.18 | Download Now!


SS7 (Signaling System Number 7) defined by the International Telecommunication Union (ITU- T) is a globally adopted protocol for out-of-band signaling systems.

The network elements involved in SS7 networks are SSPs (Signaling Switching Points), STPs (Signaling Transfer Points) and SCPs (Signaling Control Points). These elements ensure signaling integrity and availability even if one or more signaling links fail.

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The SS7 network manages calls by identifying end-to-end addressing and from there controls all the routing judgments necessary for a seamless operation.

ISUP is a part of the complex signaling system SS7 that are used to set up and release calls through the PSTN. ISUP end-to-end signaling is transported directly over MTP3 or SCCP levels.


GL's Message Automation & Protocol Simulation (MAPS™) designed for  SS7 simulation over TDM (T1E1) can simulate Service Switching Point (SSP). The ISUP signaling specification conforms to ITU-T and ANSI standards. The tester supports testing network elements, error tracking, regression testing, conformance testing, load testing/call generation and generation of high volumes of ISUP traffic. MAPS™ SS7 functionality covers the ITU and ANSI variant of SS7 implementing MTP2, MTP3, and ISUP protocols. It is able to run pre-defined test scenarios against ISUP test objects in a controlled & deterministic manner.

The application is available as

  • MAPS™ SS7 Emulator (Item # XX649)
  • MAPS™ SS7 Conformance Scripts (Item # XX647)

MAPS™ SS7 Conformance Scripts (XX647) is designed for conformance tests and functional tests, where test objects can be accurately, reliably and comfortably validated for compliance with ITU-T standard Q.761-764 and Q.784. It is suitable for manufacturers, network operators and service providers to address all stages of the development cycle, regression testing through to type approval, acceptance testing.

The application gives the users the unlimited ability to edit SIP messages and control scenarios (message sequences). "Message sequences" are generated through scripts. "Messages" are created using message templates

With the purchase of additional licenses (xx610, xx620, xxFT0) traffic can be simulated over T1/E1 interfaces. Supported traffic includes transmission and detection of TDM digits, voice files, single tone, dual tone, speech and FAX. Also supports various traffic events simulation during the course of a call, which is listed below:

TDM Traffic Events – digits, tones, files, speech, fax

  • Send, and Detect Tones, Digits, File, Test Tone, Silence and verify speech bearer
  • Stop Send Digits, File, Tone
  • Stop Send - Stops Transmission of Tone
  • Detect different tone types - dial tone, special dial tone, stutter dial tone, special information tone, call waiting, call in progress tone, reorder tone, busy tone, congestion tone, confirmation tone, howler tone, and ring-back tone
  • Set region for call progress tones (Busy, Call Waiting, Dial, Ring, Congestion, Special Dial, Special Information) detection
  • Send /Receive fax image (TIFF format) file from/to the specified location.

GL also provides an independent GUI based SS7 protocol analyzers (optional application – xx120) for online capture and decode of the signaling in real-time both during tests and as a stand-alone tracer for live systems.

Supported Protocol Standards

Supported Protocols Standard / Specification Used
MTP3 (ITU) ITU-T Q.704
ISUP (ITU) ITU - Q.761, Q.762, Q.763 and Q.764
ISUP CHINA Ministry of Posts and Telecommunications of the People's Republic of China, Technical Specification of ISUP, 1996
MTP3 (ANSI) T1.111.4-1996
ISUP (ANSI) ANSI - T1.113.1 to T1.113.4
Test & Network Management Messages (ITU, China) ITU-T Q.703, Q.704
Test & Network Management Messages (ANSI) ANSI T1.111.4, ANSI T1.111.7
ISUP ETSI EN 300 356 -1 V3.2.2(1998-08)Part 1

Main Features

  • SS7 (SSP) simulation over TDM (E1/T1)
  • Supports transmission and detection of TDM traffic - digits, voice file, single /dual tones
  • Multiple E1/T1 line interfaces supported
  • User-friendly GUI for configuring the SS7 MTP Layers
  • User Configurable Signaling Links
  • User-configured Circuit Mapping, i.e defines Circuit Identification Codes (CIC) and map these CICs to Timeslots/Trunks in order to enable Voice/Data traffic
  • Supports MTP2 and MTP3 protocol machine
  • Multiple MTP links
  • Access to all ISUP Message Parameters Initial Address, Subsequent Address, Release messages, and more
  • User controlled access to optional ISUP parameters such as timers
  • Subsequent Address Message (SAM) configurations available
  • Fully Supported Continuity Testing (COT) that includes both COT messages
  • Supports conformance testing with additional license (XX647)
  • Logging of all SS7 Messages in real time. Each SS7 message displays CIC values defined within the message
  • Impairments can be applied to messages to simulate error conditions
  • Supports customization of call flows and message templates using Script editor and Message editor.
  • Supports scripted call generation and automated call reception.
  • Provides protocol trace with full message decoding, and graphical ladder diagrams of call flow with time stamp
  • Script based & protocol independent software architecture.
  • Provides call statistics with associated captured events and error events during call simulation

Test Configuration

A test bed setup is configured to use a pre-defined XML profile. The multiple profiles created in the default profile (XML) selected in Test Bed Setup are accessible from the call generation and reception windows.

The test configuration window allows users to configure the necessary parameters in order to establish communication between MAPS™ and the DUT.

For T1 E1 based protocols, MAPS™ test bed should be setup with mandatory parameters such as Signaling Port and Timeslot, Source and Destination Point Codes, Circuit Group, Routes parameters and Default profile to establish connection with the DUT. Once the MTP layer is configured properly, ISUP messages can be transmitted and received over MTP layer.

Screen Shot of ISUP Testbed Setup Configuration

Call Generation

Call Generation option allows the user to simulate outgoing communications where an outgoing call is initiated by sending call control messages using proper scripts and profiles. The profile allows necessary parameters of call control messages to be changed during runtime.

ISUP Call Flow Scenario

Testing STPs (Signaling Transfer Points)

The MAPS™ SS7 acts as Caller (Signaling Point - SP) and initiates the call flow by sending Initial Address (IAM) to the Network (DUT). The DUT on receipt of an IAM message sends ACM and ANS message in response. The Tx script can also initiate the auto traffic or user-defined traffic as per the profile settings over established session.

ISUP Call Control at SSP Node

Call Reception

Call generated from other entity can be automatically detected in call reception window by pre-setting the required scripts in the Incoming Call Handler window.

Testing SPs (Signaling Points)

MAPS™ SS7 can be configured at the network side to act as DUT to process the call flow by receiving the Initial Address (IAM) message from the Caller (Signaling Point – SP).

Screenshot of Call Reception at STP Node

Bulk Call Simulation

MAPS™ supports Bulk Call Simulation and Stress/Load Testing capabilities through Load Generation feature. Load generation can be customized with different statistical distribution patterns such as Uniform, Ramp, Sawtooth, Fixed, Normal, Step, and Step-Sawtooth distribution. Call duration also can be randomized using similar statistical distribution. The Stress/Load Testing parameters that can be customized include, Call per second (CPS), Max Active Call, Minimum and Maximum Call Rates, Start Call Rates, and other parameters.

To simulate protocol and traffic behavior respective test scripts can be loaded along with the associated number of profiles, which provide input parameters during script execution.

Screenshot of Load Generation Parameters

Customization of Call Flow and Messages Using Pre-Processing Tools

  • Script Editor - The script editor allows the user to create / edit scripts and to define variables for the protocol fields. The script uses pre-defined message templates to build call flow and perform send and receive actions. Script editor provides options to run the test for multiple iterations in sequential or random flow. Commands allow retransmission of messages with specific interval. It also includes traffic commands to send and monitor voice, tones, digits, on the created sessions. It includes raw commands (send/monitor signaling bits, monitor power level, set idle code, and end task) to send WCS commands directly from MAPS™ to the server. . It also includes traffic commands to send and monitor voice, tones, digits, on the created sessions. It includes raw commands (send/monitor signaling bits, monitor power level, set idle code, and end task) to send WCS commands directly from MAPS™ to the server.

    Screenshot of Script Editor

  • Profile Editor - Profiles are used to provide the user configured values to the fields in the Messages (i.e Message Template in MAPS™) through variables which are going to change during the course of a call. It is now possible to quickly create multiple profiles with varying parameters and each call instance in call generation can be configured to use any of the pre-configured profiles to suit the test scenario.

    Traffic profiles can be configured with the supporting traffic parameters such as Send/Record File name and path, Tx/Rx tones with varied frequencies, and Transmit/ Detect MF DTMF digits. Users can also choose User defined traffic or Auto traffic type to automatically initiate traffic actions over established calls.

    Screenshot of Profile Editor

  • Message Editor - The Message Template is a *.HDL file that comprises of protocol encoding parameters with preset values. It is required to create a message template for every message in a protocol. The message templates are called within the scripts to perform scenario based testing.

    Screenshot of Message Editor

Call Flow & Script Execution Control

Message Sequence - MAPS™ provides protocol trace with full message decoding, custom trace, and graphical ladder diagrams of call flow with time stamp while simulation is running. Call flow graph allows to easily verify the messages exchanged between MAPS™ and DUT. See Call Generation and Call Reception for details

Script Contents & Script Flow - The Scripts Contents window displays the contents of the script selected for call generation or reception. The Script Flow window displays the Script Name, Sub-script Name, Script line number, and script statements successfully executed, which help the users in troubleshooting a particular call scenario.

Events & Event Profile Editor - User-defined events allow redirection of script execution on-the-go. The custom parameters in the events can also be changed during script execution using Event Profiles.

Screenshot of Script Contents and Script Flow

Screenshot of Event Config

Call Statistics, Events, Link Status

Call Status & Message Statistics- By default, all call handling scripts (irrespective of the type of the functions) are assessed by MAPS™ to provide statistical information about Total Calls, Active Calls, Completed Calls, Passed Calls, Failed Calls, and Calls/Sec . It is also possible to characterize the statistical information  as per the call handling scripts with a unique heading.
In addition,   Message Statistics provides the count of the protocol messages being transmitted (Tx Count) and received (Rx Count), thus allowing user to monitor the occurring events.

Screenshot of Call Statistics and Status

Screenshot of Message Stats

Events Reporting – MAPS™ provides Event Log, Error Events, and Captured Errors windows that log the captured events and errors encountered during the progress of the call.

Screenshot of Event Log

Link Status - Link Status window indicates transport related information of the protocol, for example, if SCTP is used as transport, it indicates if the Association is UP or DOWN in the Link Status window.

Screenshot of Link Status

Buyer's Guide:

Please Note: The XX in the Item No. refers to the hardware platform, listed at the bottom of the Buyer's Guide, which the software will be running on. Therefore, XX can either be ETA or EEA (Octal/Quad Boards), PTA or PEA (tProbe Units), UTA or UEA (USB Units), HUT or HUE (Universal Cards), and HDT or HDE (HD cards) depending upon the hardware.

Item No. Item Description
XX649 MAPS™ ISUP Emulator
XX647 MAPS™ ISUP Conformance Test Suite (Test Scripts), requires xx649

TDM Traffic Options

File based Record/Playback (includes xx600)
Transmit/Detect digits (Place Call/ Answer Call) (includes xx600)
Item No. Related Software
  MAPS™ MLPPP Conformance Test Suite
XX643 MTP2 Emulator
XX648 MAPS™ ISDN Emulator
PKS130 MAPS™ - SIGTRAN Emulator
XX649 MAPS™ MAP Emulator
PKS132 MAPS™ MAP IP Emulator
XX120 SS7 Analyzer Software
OLV120 Offline/ Remote SS7 Analyzer Software
PKS120 MAPS™ SIP Emulator
PKS121 MAPS™ SIP Conformance Test Suite (Test Scripts)
PKS122 MAPS™ MEGACO Emulator
PKS123 MAPS™ MEGACO Conformance Test Suite (Test Scripts)
PKS124 MAPS™ MGCP Emulator
PKS125 MAPS™ MGCP Conformance Test Suite (Test Scripts)
Item No. Related Hardware

QuadXpress T1E1 Main Board (Quad Port– requires additional licenses)

OctalXpress T1E1 Main Board plus Daughter Board (Octal Port– requires additional licenses)
PTE001 tProbe™ Dual T1 E1 Laptop Analyzer with Basic Analyzer Software
HDT001/HDE001 Legacy HD T1 or E1 (PCI) Cards with Basic Analyzer Software
HTE001 Universal T1/E1 Card with Basic Analyzer Software
UTE001 Portable USB based Dual T1 or E1 Laptop Analyzer with Basic Analyzer Software

Specifications are subject to change without notice.

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