• SIP V2 / RFC 3261 RFC 3261 Session Initiate Protocol
  • RFC 2976 SIP INFO Method
  • RFC 3515 Refer Method
  • RFC 2327 Session Description Protocol
  • RFC 3581 An Extension to the Session Initiation Protocol (SIP) for Symmetric Response Routing
  • RFC 3892 Referred-By Mechanism
  • RFC 3891 “Replaces” Header
  • RFC 3551: RTP/AVP
  • RFC 3515: REFER
  • RFC 2617: HTTP Digest Authentication
  • SDP Bypass
  • SBC exports all SS7 parameters via SIP custom X headers.

Call Routing

Configurable and extendable XML-based dial plan and routing rules XML Dialplan can be used to create complex routing scenarios between SIP and TDM.

  • Call routing based on any call parameter present in a SIP message.
  • Ability to use external applications to build complex routing logic*

Media Processing & Transcoding

Wide range of codecs supported for any to any codec negotiation.

  • G.711
  • G.723.1
  • G.726
  • iLBC
  • G.729AB
  • GSM
  • G.722
  • AMR
  • G.722.1

Echo Cancellation & VQE

Telco grade hardware based echo canceling and Voice processing

  • G.168-2002 with 128ms tail
  • Noise cancellation
  • DTMF Removal
  • DTMF Detection
  • FAX Detection
  • Automatic Gain Control

DTMF Detection and Generation

Sangoma SBC gateway supports multiple DTMF internetworking scenarios.

  • RFC 2833 Tone Relay
  • In-band
  • Hardware and software DTMF detection and generation

Management and Configuration

Sangoma SBC configuration, operation and troubleshooting are designed to be flexible.

  • Web GUI
  • On the fly configuration without service interruption.
  • Command line interface via ssh and usb to serial
  • Call detail records in XML format
  • Detailed logs with user configurable file size and auto rotation


  • SNMP v1, 2, 3
  • RTCP


  • Radius

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