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Back to New Features in VoLTE ReleaseSIP Services

 

SBC is enhanced to route non-INVITE messages in SIP core in addition to INVITE only messages.

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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

 

Note

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

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