Signaling and Media Gateways Test Solutions
The transition to "Next-Generation-All IP" requires "Gateways" that convert signaling and traffic carried over legacy TDM/PSTN networks to new signaling / traffic carried over IP/Ethernet - and therefore test solutions for Media Gateways need to address the emulation and analysis of the elements at both sides of the network.
The media gateways are employed both in home and office systems that are set to send and receive data through the Internet, and are also used in most private networks that have businesses in multiple locations. A media gateway controller (MGC) provides a signaling interface for media gateways (MGs), and to the IP network. The challenges of testing a media Gateway can be addressed by test solutions that offer a wide range of interfaces, applications, features and functionality.
GL offers a range of media gateway test solutions to simulate various elements in a hybrid TDM-VoIP network, and test interconnection of different networks, be it IP-IP, TDM-IP, or TDM-TDM.
Ethernet-T1E1 Solution w/ Media Gateway
GL's T1 E1 Analyzer with Media Gateway (MG) device, supports testing signaling and traffic from Ethernet to TDM and TDM to Ethernet networks. Supports up to 96 to 120 simultaneous T1/E1/J1 connections and two 10/100Base-TX Ethernet ports for connection to the IP network.
The T1E1 / Media Gateway combination provides user friendly automated bulk call generation, and reception for various voice band traffic types including digits, tones, voice, and fax traffic. Supported signaling types include - ISDN, SS7, and CAS. It can be connected to any TDM or IP Phone, softphone, ATA, VoIP or TDM PBX, or TDM or VoIP Network / Cloud.
Ethernet-T3E3 Solutionw/ Media Gateway
GL's T3 E3 Analyzer with Media Gateway (MG) device, supports testing signaling and traffic from Ethernet into framed or unframed T3/E3 and vice versa. In Unchannelized (Unstructured) mode, one can perform analysis or emulation of ATM, PPP, HDLC, and Frame Relay signaling with traffic over a full T3 or E3 pipe.
The Channelized (Structured) option in the T3 E3 Analyzer uses "software-only" approach to support direct access to all 2x28 T1s or 2x21 E1s or 2x16 E1s on a T3/E3 line per board for analysis and monitoring- all within a single PC, including differing T1/E1 framing formats, physical layer alarms, and payloads.
Ethernet-Optical Solution Channelized OC-3/OC-12 Media Gateway
GL's SONET-SDH LightSpeed1000™ Analyzer with Media Gateway (MG) device, supports testing 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 LightSpeed1000™ 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 Solution SIP, RTP, Skinny, SIP-I LTE, IMS, Diameter, UMTS and GSM
GL’s MAPS™ (Message Automation and Protocol Simulation) platforms can be used to simulate 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 simulated by MAPS™ is shown in the figure above.
- 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, Skinny, LTE, IMS, Diameter, UMTS, GSM) - Hundreds to thousands of calls can be generated by MAPS™ applications over IP, 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/Analog Solution MAPS™ APS (24, 48, & 96-Port)
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-48. 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.
Simulated SG, MG and MGC
- Signaling Gateway Emulation - MAPS™ SIGTRAN and MAPS™ SS7 can be combined into one entity to emulate a complete Signaling Gateway. MAPS™ SIGTRAN simulates 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 simulate 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 simulates 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.