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Oracle Session Border controller : Reason explained for Multiple to-tags within same dialog to caller. Specially in case of serial forking (Doc ID 2373936.1)

Last updated on SEPTEMBER 01, 2023

Applies to:

Acme Packet 6300 - Version S-Cz7.2.0 to S-Cz8.0.0 [Release S-Cz7.0 to S-Cz8.0]
Information in this document applies to any platform.


Does SBC allow multiple to-tags within same SIP call flow to caller when call forking?

In case of  sip recursion call flow, kind of a serial forking on core side of SBC. After SBC receives provisional response (180/183) from outbound session-agent, followed by 503 which triggers SBC to go to next hop agent in a Session-agent group.
SBC changes the `TO' tag in dialog between itself and the caller whenever it forwards provisioning responses (180/183) to the caller from each SA.



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