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Trunk / PRI (E1/T1) VoIP Gateways

A PRI gateway connects digital E1 or T1 telephone lines — or a legacy PBX — to a SIP/VoIP phone system, converting calls in both directions. 3G Callnet supplies Dinstar MTG and Sangoma Vega gateways from 1 to 63 E1/T1 ports, 30 to 1,890 simultaneous calls.

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Trunk / PRI (E1/T1) VoIP Gateways

Ranges we supply

ModelE1/T1 portsMax simultaneous calls
Sangoma Vega 100G130
Sangoma Vega 200G260
Sangoma Vega 400G4120
Dinstar MTG2001/2/4120 (G.711)
Dinstar MTG1000B1/260
Dinstar MTG20004 to 20600
Dinstar MTG300016 to 63 (STM-1)1,890

Also: Dinstar MTG3000T transcoding gateway (IP-to-IP codec conversion).

Learn the basics: E1 vs T1 PRI explained. Related: PRI cards · IP-PBX · IVR System

Dinstar PRI (E1/T1) Gateways View page

Dinstar MTG200
Dinstar · Trunk / PRI Gateway

MTG200

MTG200 series Digital VoIP Gateways with 1/2/4 ports E1/T1 simply migrate your legacy PSTN networks (legacy PBX or E1/T1 service providers) , to VoIP network. Only small investment, you can enjoy the real benefits of VoIP, and retain your PSTN connectivity. It is a compact box designed for SMEs and open-source market, fully compatible with Asterisk / Elastix / Trixbox / Freeswitch and mainstream VoIP platform. With support of ISDN PRI / SS7 / R2 MFC, integrating with your legacy PBX or PSTN network is also so easy.

  • 1/2/4 ports E1/T1
  • Up to 120 simultaneous calls on G.711
  • Up to 60 simultaneous calls on G.723/G.729
  • Flexible routing
  • Multiple SIP trunks
  • Fully compatible with Asterisk, Elastix and mainstream VoIP platforms
Dinstar MTG1000B
Dinstar · Trunk / PRI Gateway

MTG1000B

MTG1000B series E1/T1 Digital VoIP Gateways with 1/2 ports E1/T1 is a compact and cost-effective trunk gateway designed to interconnect between PSTN and IP networks. With powerful hardware design, MTG1000B series has comprehensive PSTN access capabilities as well as SIP to SIP interworking features that enables the interconnection between all these elements.

  • 1/2 ports E1/T1 in 1U chassis
  • Dual Power Supplies
  • Up to 60 simultaneous calls
  • Flexible routing
  • Multiple SIP trunks
  • Fully compatible with mainstream VoIP platforms
Dinstar MTG2000
Dinstar · Trunk / PRI Gateway

MTG2000

MTG2000 is a carrier-grade intelligent Digital VoIP gateway, scalable from 4 to 20 ports E1/T1. It provides carrier-grade VoIP and FoIP services, as well as value-added functions such as modem and voice recognition. With highly maintainable, manageable and operable features, it offers a flexible, high-efficient, future-oriented communication network for users.

  • 4 to 20 ports E1/T1 in 1U chassis
  • Up to 600 simultaneous calls
  • Redundancy Dual MCU unit
  • Dual Power Supplies
  • Flexible routing
  • Multiple SIP trunks
  • Fully compatible with mainstream VoIP platforms
Dinstar MTG3000
Dinstar · Trunk / PRI Gateway

MTG3000

MTG3000 is a carrier-grade Digital VoIP gateway, scalable from 16 to 63 ports E1/T1 with STM-1 interface. It provides carrier-grade VoIP and FoIP services, as well as value-added functions such as modem and voice recognition. With highly maintainable, manageable and operable features, it offers a high performance, reliable communication network for users.

  • 16 to 63 ports E1/T1 in 2U chassis, STM-1 interface
  • Up to 1890 simultaneous calls
  • Redundancy Dual MCU units
  • Dual Power Supplies
  • Flexible routing
  • Multiple SIP trunks
  • Fully compatible with mainstream VoIP platforms
Dinstar MTG3000T
Dinstar · Trunk / PRI Gateway

MTG3000T

MTG3000T series is a flexible and high-performance transcoding gateway with up to 1568 transcoding sessions. It converts simultaneous channels of transcoding among a number of popular voice codecs like G.711A/U, G.723.1, G.729A/B, iLBC,G.726 and AMR from IP to IP, bridge differences in capabilities between the telecommunications systems with high reliability.

  • Transcoding from IP to IP
  • Up to 2048 VoIP transcoding sessions
  • Dual Power Supplies
  • Scalable by 4 DTUs boards
  • Multiple SIP trunks
  • Fully compatible with mainstream VoIP platforms
Sangoma Trunk / PRI Gateway

Sangoma PRI (E1/T1) Gateways View page

Sangoma VEGA 200G
Sangoma · Trunk / PRI Gateway

VEGA 200G

Sangoma’s Vega 200G VoIP Digital Gateways are a dual port T1/E1/PRI appliance supporting up to 60 simultaneous calls.

  • Fixed configuration of 60 VoIP calls
  • Branch office survivability .
Sangoma VEGA 100G
Sangoma · Trunk / PRI Gateway

VEGA 100G

Sangoma’s Vega 100G VoIP Digital Gateways are a single port T1/E1/PRI appliance supporting up to 30 simultaneous calls.

  • Fixed configuration of 30 VoIP calls
  • Branch office survivability .
Sangoma VEGA 400G
Sangoma · Trunk / PRI Gateway

VEGA 400G

Sangoma’s Vega 400G VoIP Digital Gateways are a quad port T1/E1/PRI supporting up to 120 simultaneous calls.

  • Voice, fax and modem support
  • Branch office survivability .
  • Fixed configuration of 120 VoIP calls
  • Hardware failover Functionality

Frequently asked questions

What is a PRI gateway?

A PRI gateway is a standalone device that converts calls between E1/T1 PRI lines and SIP, so an IP-PBX, dialer or VoIP platform can use PRI lines — or so an old PBX can connect to SIP trunks.

PRI gateway or PRI card?

A PRI card fits inside the server running the PBX (for example Asterisk). A PRI gateway is a separate box connected over the network, so it works with any SIP system, can serve several servers, and keeps telephony hardware separate from the server.

How many calls does one E1 carry?

An E1 line carries 30 simultaneous calls (a T1 carries 23 or 24). A 2-port gateway therefore handles about 60 calls, a 4-port gateway about 120.

Which gateway do I need?

Count your E1/T1 lines: 1–4 ports suit SMEs (Dinstar MTG200, Sangoma Vega 100G/200G/400G); 4–20 ports suit large contact centres (MTG2000); 16–63 ports with STM-1 suit carriers (MTG3000).

Need a call center dialer, IVR, IP-PBX or VoIP hardware? Tell us what you need and get a quote from 3G Callnet, Mohali.