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Scalable VoIP to T1/E1 PRI Gateway

Product Overview

ETERNITY GE12S is a modular VoIP to ISDN PRI gateway scalable up to 384 IP channels and 8 T1/E1 PRI ports.The gateway interfaces with ISDN PRI PBX using programmable TE/NT PRI ports. The gateway also connects PBX or key phone systems to an IP network.  It offers 16 SIP accounts with flexibility to register with various SIP providersandplaces calls via most cost-effective service providers.

Organizations with traditional PRI PBX can now seamlessly migrate to IP, while preserving their existing communication infrastructure and dialing patterns. For organizations already migrated to IP, this gateways offers connectivity to fixed-line networks using T1/E1 interface.

ETERNITY GE gateway is a future-proof and scalable solution to grow with the communication needs of an organization. With Matrix ETERNITY GE gateway, service providers and system integrators can effectively deliver carrier-grade services as well as enterprise based applications.


VoIP Gateway for ISDN PRI PBX

  • Seamless connectivity to cost-effective IP network
  • Maintain existing PBX infrastructure and dialing habits
  • Programmable TE/NT Modes for easy integration
  • No need of static IP with Dynamic DNS support
  • Compatible with all ISDN PRI PBX

ISDN PRI Gateway for IP-PBX

  • ISDN PRI Trunking for IP-PBX
  • Deployable in all SIP based VoIP networks
  • Scalable gateways, grow as per business need

Key Features

  • Modular architecture with scalable VoIP and ISDN PRI channels 
  • Completely non-blocking architecture
  • Restrict unwanted calls with list of denied numbers
  • Direct number dialing on the cellular networks with automatic number translation
  • Programmable TE/NT mode for easy integration with existing communication infrastructure
  • Simultaneous registration with multiple SIP service providers
  • Emergency number dialing
  • Hotline extension setting
  • Video conferencing (H.320) through PRI NT port


System Capacity:

Expansion Slots 12
Expansion Cards 16/32 VoIP channels per Interface Card
1ISDN PRI lines per Interface Card

VoIP Port:

Protocol SIP v2, SDP, RTP (RFC 2833)
Connector Ethernet (RJ 45)
SIP Accounts 16
Simultaneous VoIP Calls 16 to 384
Echo Cancellation G.168 with up to 128ms Tail length
Voice Codecs G.711 (A-law, µ-Law), G.723, G.729AB, GSM-FR, GSM-EFR and iLBC Voice Codec



Up to 8  PRI Ports
Connector RJ45
Operational Mode Software Configurable NT/TE Modes
Interface S/T Interface, Point to Point and Point to Multipoint
Switch Variant AT&T 4ESS, DMS-100, ETSI NET3, ITU-T Q.921,ITU-T Q.931, NTT INS64, US NI1 (National ISDN 1),France VNx Signaling

Power Supply:

Input  Option 1 (Mains): 100-240 VAC, 47-63 Hz
Option 2 (DC): 48VDC +/- 20%
Power Consumption  50W (Typical)


Dimension 41.2x16.0x25.4cm (16.22"x6.29"x10.0")
Mounting Options Wall Mount, Table Top and 19" Rack Mount
Operating Temperature -10° C to +50° C (14° F to +122°

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