My Oracle Support Banner

PSTN SIP Call Establishment Dialog 200OK Contains Contact Header With Localhost (Doc ID 2446164.1)

Last updated on AUGUST 24, 2020

Applies to:

Oracle Communications WebRTC Session Controller - Version 7.2.0 to 7.2.0 [Release 7.2]
Information in this document applies to any platform.


1) While testing the incoming PSTN SIP calls it's found that  establishment dialog is not completed. It is missing an ACK message from the SBC towards the WSC-SE.

One explanation for this behavior is that the previous 200 OK sent from WSC-SE to SBC contains in its Contact Header the address rather than the HA interface's address.


2) Also, tried to force the interface sip-localhost-iface-lo on both engines to use UDP by setting a MTU of 4000, but it is not applying




To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

In this Document

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.