SIP to SIPT Overview

The information below pertains to Interworking between SIP and SIP-T. Use the information below to get an overview of how SIP to SIP-T operates on the IMG 2020. For configuration information, see the following links:

 Configure SIP to SIP-T Interworking

SIP to SIP-T Interworking

An SS7_Base license is required when utilizing the SIP to SIP-T interworking functionality.

 In the diagram below the IMG 2020 is configured to receive an incoming SIP message on Channel Group A. The message is inter-worked and SIP-T messaging is transmitted out Channel Group B. The SIP Endpoint Requiring SIP-T receives the SIP-T messages and continues to processes them. After processing the messages, the SIP Endpoint Requiring SIP-T then sends SIP-T responses back to the IMG 2020 through Channel Group B. The responses are inter-worked and transmitted out Channel Group A as SIP messaging. Each individual Channel group must be configured with a SIP-T profile for the IMG 2020 to function with SIP-T messaging. See Call Flow diagram below.

Call Flow Diagram

Use diagram above when reading Call Flow Diagram

SIP to SIP-T Message Mapping

Below is a mapping of SIP to SIP-T messages. The ISUP messages are inserted into the SIP message as a RAW API message.

SIP Message

SIP-T Message

INVITE

INVITE (IAM)

180 Ringing

180 Ringing (ACM/CPG)

183 Progress

183 Progress (ACM/CPG)

200 OK

200 OK (ANM/CON)

BYE

BYE (REL)

200 OK BYE

200 OK BYE (RLC)

4xx, 5xx, 6xx

4xx, 5xx, 6xx (REL) 

 

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