Phone Number Being Stripped From A Call URI (Doc ID 1936542.1)

Last updated on OCTOBER 31, 2016

Applies to:

Acme Packet 4500 - Version S-Cx6.0.x to S-Cz7.2.0 [Release S-Cx6.0 to S-Cz7.0]
Information in this document applies to any platform.

Symptoms

The phone number in the URI request header is being stripped by the SBC and we cannot determine why.

Example:

Incoming URI from 10.251.1.5 to peer-interface 172.27.33.93 (realm access-cale) - INVITE sip:6232291600@172.27.33.93:5060 SIP/2.0

Outgoing URI from the SBC core interface 216.27.193.87 (realm core-cale) to our call server 216.27.193.70 - INVITE sip:vas1.phx1.voip.tnltd.net:5060 SIP/2.0

The number 6232291600 is being stripped from the request causing our call to fail. This only happens to calls from 10.251.1.5, which has a session-agent configured. Calls from the other session-agents in realm access-cale do not exhibit this behavior.

I've attached a packet capture along with acme logs including a support-info.

Cause

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