GL Announces SIGTRAN Protocol Simulator for ISDN over IP

Top Quote GL Communications Inc. announced today the release of its newest product SIGTRAN Protocol Simulator for ISDN over IP - An advanced protocol simulator/tester used for simulating SIGTRAN ISDN. End Quote
  • (1888PressRelease) October 01, 2011 - Gaithersburg, Maryland, USA - Speaking to media, Mr. Vijay Kulkarni CEO of the company said, "SIGTRAN, shortened form of Signaling Transmission, is the standard for conversion, transport, and encapsulation of SS7 and ISDN over IP. It is one of the most important transition elements in moving from legacy TDM to NGN IP networks."

    He added, "ISDN is a very common protocol in the legacy network. The two types are PRI (Primary Rate Interface or 23B +D) for T1 E1 lines and BRI (Basic Rate Interface, or 2B + D) for lower speed digital lines. As PSTN networks migrate to Next Generation Networks (NGNs), a need for conversion and transport of signaling and media (voice) is necessary. NGNs are IP based systems, therefore protocols have been developed to reliably transport/adapt Q.920s (data link layer) and Q.930s (Layer 3 user messages) TDM protocols. This adaptation is performed by two IP based protocols within SIGTRAN, called SCTP and IUA."

    Mr.Kulkarni further added, "As shown below, a Signaling Gateway (SG) on the TDM side connects to standard PRI T1 E1 lines (or BRI- not shown) and translates the ISDN messages to SIGTRAN IP format. It supports the same application and call management functions as ISDN but uses two protocol layers on top of Internet Protocol (IP): Stream Control Transport Protocol (SCTP) and ISDN Q.921-User Adaptation Layer (IUA). The SG talks to a Media Gateway Controller (MGC), which in turn performs further routing and signaling decisions within the NGN."

    He added, "GL's MAPS™-SIGTRAN is an advanced protocol simulator/tester used for testing SIGTRAN. Both SIGTRAN with SS7 over IP and SIGTRAN with ISDN over IP are supported. The tester can simulate a complete ISDN connection SG to MGC, where ISDN signaling as defined by the ITU-T Q.921 / Q.931 standards. In addition, GL MAPS™ SIGTRAN also supports the following flavors of ISDN:
    4ESS, 5ESS, BELL ISDN, DMS100, DMS250, QSIG."

    He further added, "MAPS™ SIGTRAN is a powerful tool that can be used to perform detailed testing of ISDN protocol messages over IP, and offers a complete solution for testing, troubleshooting, and maintenance of SIGTRAN devices and networks implementing PRI ISDN."

    Some of the Important Features

    ·Simulates ISDN signaling over IP (ISDN-SIGTRAN)
    ·Generates and process all ISDN messages such as Setup, Connect, Release messages, and more
    ·Switch and Subscriber Emulation
    ·User controlled access to optional ISDN parameters such as timers
    ·Provides various release cause codes such as rejected, no user response, user busy, congested, and so on to troubleshoot the problems in ISDN
    ·Impairments can be applied to messages to simulate error conditions
    ·Supports customization of call flows and message templates using Script editor and Message editor
    ·Provides call statistics and associated captured events and error events during call simulation

    About GL Communications Inc.,

    Founded in 1986, GL Communications Inc. is a leading supplier of test, monitoring, and analysis equipment for TDM, Wireless, IP and VoIP networks. Unlike conventional test equipment, GL's test platforms provide visualization, capture, storage, and convenient features like portability, remotability, and scripting.

    GL's TDM Analysis & Emulation line of products includes T1, E1, T3, E3, OC-3, OC-12, STM-1, STM-4, analog four-wire, and analog two-wire interface cards, external portable pods, and complete system solutions. Capabilities include voiceband traffic analysis and emulation across all traffic types (voice, digits, tones, fax, modem), all protocols (ISDN, SS7, GR-303, Frame Relay, HDLC, V5.X, ATM, GSM, GPRS, LTE, etc.), and with capacities up to thousands of channels. Our newest products provide astonishing capacity and capture capability up to and including gigabit speeds.

    GL's VoIP and IP products generate / analyze thousands of calls and traffic simultaneously with traffic types such as frames, packets, voice files, digits, video, tones, noise, and fax. Almost all codecs are supported including G.711, G.729, AMR, EVRC-A,B,C, GSM, iSAC, and many more. Additional features include visual analysis, real-time listening, and recording. The product line also includes Ethernet / IP Testing capability that simulates and checks frame transport and throughput parameters of Ethernet and IP networks, including delay, errors and other impairments.

    GL's Voice Quality Testing (VQT) product line complements all of GL's products. Using ITU-standard algorithms (PAMS, PSQM, and PESQ), GL's VQT provides a widely accepted solution for assessing voice quality in the telecom industry. Voice Quality Testing across multiple networks (T1, E1, T3, E3, OC-3, OC-12, VoIP, Wireless, and Landline) are all available.

    GL's Wireless Products perform protocol analysis and voice quality assessment on GSM, CDMA, UMTS, and LTE networks. Connections can be made to any wireless phone with automated call control, GPS mapping and real-time signal measurements.

    GL's Echo Canceller testing solutions provide the broadest range of simulation and analysis, including line and acoustic echo. GL's compliance testing per G.168. G.167 and P.340 across TDM, IP, VoIP and Wireless networks is widely accepted in the industry.

    GL's wireless VQT solutions help assessing impairments to voice quality such as poor mobile phone quality, voice compression and decompression algorithms, delay, loss and gain in speech levels, noise, acoustic and landline echo, and other distortions are easily assessed and accurately measured.

    GL's Handheld data testers can test a wide variety of communications facilities and equipment including T1, fractional T1, E1, fractional E1, T3 and E3 modems, multiplexers, CSU, DSUs, T1 CSUs, DTUs, NTUs and TIUs and more. The testers provide convenience, economy, and portability for almost any interface, including RS232, RS-422, RS-530, X.21, T1, E1, T3, E3, and many others.

    GL's Network Surveillance and Monitoring products include Probes for TDM, IP, VoIP, ATM, and Wireless networks. An open standards based approach provides a scalable, feature rich, real-time access to network characteristics. Centralized or distributed access, efficient transport and database loading allow compatibility with 3rd party and standards based monitoring systems.

    For more information about GL's complete line of products,

    Shelley Sharma
    Phone: 301-670-4784 ext. 114
    E-mail: info ( @ ) gl dot com

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