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 127.0.0.1 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
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