Digital VoIP Gateways

G100 Digital Gateway

Built on a powerful combination of the Asterisk open source communications engine and a state-of-the-art embedded platform, Sangoma’s G100 digital gateways provide the best value for connecting traditional telephony (T1/E1/PRI) to IP (SIP). Sangoma’s G100 gateway software is based on the Asterisk communications engine and is managed through an intuitive point-and-click GUI, which allows for easy navigation and effortless setup. The digital gateways feature a power-saving embedded design with a highly efficient digital signal processor (DSP) handling all media-related operations.

The G100 VoIP gateway includes one (1) software-selectable T1/E1/PRI interface and supports up to 30 concurrent calls. Sangoma’s  gateways are proven to support most applications, and its robust feature set includes the ability to configure call rules for connecting many combinations of telephony providers (traditional and VoIP) and PBXs (legacy and VoIP), failover routing to ensure calls won’t fail, licensing for the maximum number of calls the appliance supports, SIP to SIP transcoding and a proven design of no moving parts to fit any environment.

The G100 digital VoIP gateway is available in:

  • One Span Digital T1/E1/PRI to VoIP Gateway Appliance

Gateway Applications

SIP Trunking

Businesses with legacy phone systems can install a G100 gateway to seamlessly connect to VoIP services or a SIP trunk and eliminate the PSTN connection.

PSTN Trunking

Businesses already IP at the core can install a G100 gateway to connect to the PSTN for failover.

Remote Connectivity

Connect legacy Phone Systems to remote sites over private VoIP links.

Virtualized Connectivity

Connect virtualized systems to legacy TMD services.

Gateway Features

Simplified Deployment

All G100 Series gateways have an intuitive webGUI for easy setup, eliminating the need of IT admin and complicated configuration

Flexible Routing

Advanced flexible call routing with automatic failover and bypass routing.

Highly Interoperable

All G100 Gateways support the standard VoIP/SIP protocol and have built-in transcoding so you can trust that your phone calls and faxes will work even in challenging environments. G100 Gateways also allow for custom configuration for the custom deployments.


Support for T.38 faxing.

Field Upgradable

Firmware updates can be performed remotely through WebGUI.

Advanced troubleshooting

Built-in call tracing and debugging utilities.

Gateway Specifications

VoIP Interface

  • SIP
  • Fax and modem support (G.711 and T.38)
  • VoIP channel support: 30
  • Audio Codecs:
  • G.711 (a-law/µ-law) (64 kbps)
  • G.729a (8kbps)
  • GSM-FR
  • G.726

Telephony Interface

  • 1 T1/E1/PRI w/ RJ-45

LAN Interface

  • ‍1 ‍10/100/1000 Ethernet​


  • 1G100F - One Span Digital T1/E1/PRI to VoIP Gateway Appliance, North American Power Supply
  • 1G101F - One Span Digital T1/E1/PRI to VoIP Gateway Appliance, Europe Power Supply
  • 1G102F - One Span Digital T1/E1/PRI to VoIP Gateway Appliance, United Kingdom Power Supply
  • 1G103F - One Span Digital T1/E1/PRI to VoIP Gateway Appliance, Australia Power Supply
  • 3244-00042 - G100 Gateway Appliance Single Unit 19" Rack Mount Ear

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