Carrier-Class Voice Trunking Gateway

• Compresses up to 112 full E1/T1 voice lines or a single STM-1/OC-3 voice line over E1/T1, SDH/SONET or GbE links
  
• Up to 15:1 voice compression combine with silence suppression and TDMoIP multiplexing to reach maximal bandwidth savings (up to 16:1)
  
• Modular chassis with full hardware redundancy
  
• Additional optimization of signaling channels
  
• Local and remote management via ASCII terminal, Telnet or RADview-SC/Vmux

• Reduces Opex by aggregation and compression
  
• Ensures carrier-grade voice quality
  
• Transparent to all signaling protocols and telephony features

The Gmux-2000 carrier-class voice trunking gateway is a cost-effective, modular voice trunking gateway that provides a cost-effective, high-capacity solution for reducing the bandwidth required for voice transmission over TDM, IP or MPLS networks.

Using state-of-the-art-voice compression algorithms, as well as voice activity detection, silence suppression and RAD’s unique TDMoIP multiplexing, Gmux-2000 can reach a maximum compression ratio of 16:1, transmitting up to 112 E1/T1 links over as few as seven E1/T1s, or over a single Gigabit Ethernet (GbE) link. Alternatively, Gmux-2000 can compress voice coming directly from an STM-1/OC-3 voice trunk.

By optimizing signaling channels (SS7, PRI, etc), Gmux-2000 further reduces overall bandwidth.In addition to compressing 2G traffic, the Gmux-2000 functions as a media gateway and supports VoIP, AMR/IP, MEGACO and SIGTRAN traffic to enable cross-network connection between 2G and 3G subscribers and inter-MSC traffic delivery.

Full support for telephony services

The Gmux-2000 voice trunking gateway maintains high quality voice, while ensuring continued support of inband telephony features, such as fax, modem, IVR, and others.

When Gmux-2000 is deployed with the Vmux-2100, Vmux-110 or Vmux-210, it offers a complete, cost-effective carrier-class voice trunking solution.

Voice compression modules

The product is a 6U-high chassis, mountable in a 19-inch ETSI or ANSI rack, and housing the following modules.

• Up to two PSN network uplink modules or inband management modules
  
• Two control modules
  
• Up to 2 STM-1/OC-3 interface modules
  
• Three AC/DC power supply modules
  
• Up to seven I/O modules (voice compression modules)
  
• Cooling fans module

Gigabit Ethernet network modules, each with a pair of redundant Gigabit Ethernet (GbE) ports, support Ethernet IEEE 802.3ad, 802.1Q (VLAN tagging) and 802.1p (priority bits).

Voice compression modules perform compression and processing of E1/T1 traffic flows, and transmit the compressed voice over the E1/T1 main link ports on the module itself, or through the internal bus to the GbE network module. Each voice compression module is capable of handling 12 or 16 incoming E1/T1s (ordering option).

These modules function as server modules, meaning they can receive the voice directly from the PBX/MSC (via a direct Telco cable), or they can process voice coming in from an STM-1 module. The voice compression modules are capable of functioning in point-to-multipoint topologies as well.

STM-1/OC-3 interface modules perform SDH/ SONET multiplexing/demultiplexing of channelized STM-1/OC-3 trunks into separate, internal E1/T1 circuits (for processing by the voice compression modules). Each STM-1/OC-3 interface module provides a pair of ITU-T G.703 coax or G.957, G.958 fiber optic links, supporting 1+1 redundancy according to ITU-T G.783.

Control modules provide the SNMP agent and management interfaces for configuration and control of the entire Gmux-2000 system. Each control module provides redundant interfaces for connecting external G.812 station clocks and for alarm inputs/outputs.

Power supplies are hot-swappable plug-in modules. Up to three AC/DC power supply
modules can be installed for load-sharing and redundancy. Two modules are required to drive a fully equipped Gmux-2000 system.

User-friendly management application

The Gmux-2000 features flexible management capabilities, including local management via an ASCII terminal (RS-232). In addition, remote management can be performed inband or out-of-band, using one of the network ports or the dedicated management port, while maintaining separation between management and user traffic via the use of VLANs. Advanced FCAPS (Fault, Configuration, Accounting, Performance, Security), service provisioning and diagnostic tools are provided by RADview-SC/Vmux, RAD's network management system, via an SNMP-based GUI.

The Gmux-2000 also supports a variety of configuration access channels, including CLI over Telnet, SNMP and TFTP. Incorporated security features include Secure Shell (SSHI), Secure FTP (SFTP), SNMPv3 and RADIUS, as well as management access control list (ACL).