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Back to New Features in VoLTE Release

series4
 supports routing

 

SBC is enhanced to route non-INVITE messages, including out-of-dialog messages, in SIP core in addition to INVITE only messages.

Info
titleNote

The 

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0series4
supports the tgrp/tgrp-context functionality in R-URI for INVITE and NON-INVITE.

Routing Sonus SBC supports routing of non-INVITE out-of-dialog messages is supported for the following types of SIP messages:

  • MESSAGE
  • NOTIFY
  • REFER
  • REGISTER
  • OPTIONS
  • INFO
  • SUBSCRIBE
  • PUBLISH

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  1. Enable signaling flag relayNonInviteRequest on the all the Trunk Groups including the default SIP Trunk Groups.
    Reference: sipTrunkGroup signaling SIP Trunk Group - Signaling - CLI

  2. Enable new flag sipRegRelay on the default Zone
    Reference: Stateless REGISTER Relay for Peering in Common IP Attributes - SIP - CLI

  3. Set the relayFlags related to the appropriate events needed on the Inter-Gateway Signaling Group or Signaling Gateway Group IPSP used for the inter-SBC leg. This enables SUBSCRIBE messages with specific events to pass through.
    Reference: commonIpAttributes Common IP Attributes - SIP - CLI

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Note

The above configurations must be performed in addition to the configuration mentioned in Configuring the Configuring SBC to use SIP in the Sonus Ribbon IP Core section, which details the basic configuration required for SIP In Sonus IP Core.

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