Wireless, All-IP, TDM, PSTN

Signaling and Media Gateways Test Solutions


Gateways convert signaling and traffic from legacy TDM/PSTN networks to modern Ethernet/IP networks. As a result, test solutions for Media Gateways must emulate and analyze elements on both sides of the network.

Media gateways enable data transmission and reception over the Internet. A Media Gateway Controller (MGC) facilitates signaling between media gateways and the IP network. Comprehensive test solutions with diverse interfaces, applications, and functionality are employed to fully test the Media Gateways.

GL provides a comprehensive range of media gateway test solutions. These solutions emulate various elements within a hybrid TDM-VoIP network and test the interconnection between different networks, whether it is IP-IP, TDM-IP, or TDM-TDM.

Ethernet and T1E1 Solution with Media Gateway

Ethernet and T1E1 Solution with Media Gateway

GL's T1 E1 Analyzer connects to Media Gateway (MG) device and tests signaling and traffic between Ethernet and TDM networks. The T1 E1/Media Gateway combination provides an easy-to-use and automated solution for generating and receiving multiple calls. It supports different types of voice band traffic, including digits, tones, voice, and fax. Supported signaling options include ISDN, SS7, and CAS.

Ethernet and T3E3 Solution with Media Gateway

Ethernet and T3E3 Solution with Media Gateway

GL's T3 E3 Analyzer connects to Media Gateway (MG) device to test signaling and traffic between Ethernet and framed or unframed T3/E3 networks. It supports analysis and emulation of ATM, PPP, HDLC, and Frame Relay signaling in Unchannelized (Unstructured) mode, facilitating smooth transmission of traffic over a full T3 or E3 connection.

The Channelized (Structured) feature of the T3 E3 Analyzer utilizes a "software-only" approach to provide direct access to all 2x28 T1s or 2x21 E1s or 2x16 E1s on a T3/E3 line per board. This allows for analysis and monitoring of various aspects, such as different T1/E1 framing formats, physical layer alarms, and payload, all within a single PC.

Ethernet-Optical Solution Channelized OC-3/OC-12 Media Gateway

Ethernet-Optical Solution Channelized OC-3/OC-12 Media Gateway

GL's SONET-SDH SonetExpert™ Analyzer connects to Media Gateway (MG) device and test Ethernet-to-SONET/SDH connectivity. In Unchannelized (Unstructured) mode, one can perform wirespeed processing of ATM, PPP, or in Raw on quad optical ports for functions such as wire-speed recording, analysis, emulation, and playback of traffic over OC-3/STM-1 or OC-12/STM-4 links.

Channelized (Structured) option in the SonetExpert™ Analyzer uses "software-only" approach to support direct access to all or user-defined 2 x 84 T1s or 2 x 63 E1s per board over an OC-3/STM-1 line - all within a single PC, including differing T1/E1 framing formats, physical layer alarms, and payloads. An OC-12/STM-4 carries 336 T1s or 8064 DS0s. Each of the 336 DS1 or 252 E1 channels embedded on the line interface can be processed individually to test a high-density Gateway between TDM over SONET/SDH and TDM over packet.

VoIP SIP, RTP, SIP-I LTE, IMS, Diameter, UMTS and GSM Solution

Hybrid Network Testing

GL’s comprehensive Signaling and Traffic Emulation test equipment suite Message Automation and Protocol Simulation (MAPS™ ) platforms can be used to emulate various elements in a hybrid TDM VoIP network, and test interconnection of different networks, be it IP-IP, TDM-IP, or TDM-TDM. A typical depiction of a hybrid TDM/IP network, and its components emulated by MAPS™ is shown in the above architecture. These platforms help ensure that networks work together smoothly and efficiently

  • TDM/PSTN Call Generation (SS7, ISDN, CAS) - Hundreds to thousands of calls can be generated by MAPS™ SS7, ISDN, or CAS applications. This includes TDM traffic such as digits, tones, voice and fax over T1 E1.
  • VoIP Call Generation (SIP, SIP-I, 5G, LTE, IMS, Diameter, UMTS, GSM) - Hundreds to thousands of calls can be generated by MAPS™ applications over IP, 5G, 4G, 3G, and 2G networks. This includes RTP traffic such as digits, tones, voice and T.38 fax over IP.
  • Signaling and Traffic Analysis - PacketScan™ - an All-IP Analyzer can be configured on a remote system for capturing all signaling - SIGTRAN, MEGACO, SIP and RTP Traffic in real-time. Similarly, an SS7/ISDN Analyzer over TDM can be configured on a remote system for capturing all SS7/ISDN signaling and bearer traffic. An ATM Analyzer/PPP Analyzer can capture, analyze, and monitor frames over T3E3 / Optical network.

2-Wire/4-Wire Analog MAPS™ APS (24, 48, 96, and 192-Port) Solution

MAPS™ APS Network Diagram

MAPS™ APS is the compact high-capacity Analog 2-wire Bulk Call Generator that supports up to 96 independent FXO ports per 1U Server and APSCB-96.  More capacity can be achieved by simply scaling the system with a 4U MAPS™ APS Server sporting 2 Octal T1 E1 Cards which can then support up to 384 analog ports.

Each of the analog ports serves as an independent analog telephone, which can be individually configured and activated for various telephony tasks.  The calls can be monitored and recorded for voice quality analysis. The system is used to test Media Gateways, Central Office (CO), PBX, ATAs, and other telecommunications equipment on the analog side, which provide local loop interfaces.

MAPS™ can support any of the following protocols in TDM/PSTN networks for establishing the signaling links - CAS, FXO FXS, ISDN, SS7, PPP, GSM, INAP, CAP, and MAP.

Simulated SG, MG and MGC

Simulated SG, MG and MGC

With MAPS™ SIGTRAN, MAPS™ MGC Multi-Interface and TDM/RTP Traffic, one can emulate both signaling and media gateways and create a hybrid network environment to test signaling and traffic.

  • Signaling Gateway Emulation - MAPS™ SIGTRAN and MAPS™ SS7 can be combined into one entity to emulate a complete Signaling Gateway. MAPS™ SIGTRAN emulate a Signaling Gateway and Soft switch and allows connecting to traditional SS7 nodes or IP-enabled signaling nodes and offloads TDM SS7 traffic to IP networks. M3UA, M2UA, and M2PA nodes are supported.
  • Media Gateway Emulation - MAPS™ MEGACO or MAPS™ MGCP can be configured with T1 E1 trunks to emulate a Trunking Media Gateway. MEGACO signaling to/from a Media Gateway Controller is used to establish TDM to RTP connections and vice versa. All standard Codec supported.
  • Media Gateway Controller Emulation - MAPS™ MGC Multi-interface (combines MAPS™ MEGACO, SIP, MGCP, SS7 and SIGTRAN) performs Media Gateway Controller functions - interacting with multiple Media Gateways, Signaling Gateways, TDM, and SIP server as well. Scripts can be written to route calls to different Service Switching Point's and SIP users based on area codes.  MAPS™ MGC emulate SS7 signaling procedure between the SGs on both the ends of the network while handling bulk traffic (RTP Media) between the MG terminals using MEGACO/ H.248/MGCP signaling. Various traffic types include File, Digits, Tones, FAX, IVR, Dynamic VF, and Voice Quality Testing.