++ John.
On 12/10/2022 18:29, John Quick wrote:
Thomas,
The UAS at 10.30.9.11 has failed to process the two Record-Route headers
sent in the INVITE. It should send the Route Set back as part of the
Response - i.e. within the 200 OK. But it hasn't. It has just absorbed the
Record-Route headers and ignored them. I would say that is faulty UAS
behaviour, but maybe Bogdan could confirm.
Consequently, the ACK has no Route headers. That means OpenSIPS is treated
as the final destination - it doesn't know that it is meant to relay the ACK
to 10.30.9.11
If you can't fix the UAS, you could try using the Topology hiding module in
OpenSIPS. That would probably overcome the problem because Topology hiding
doesn't send Record-Route headers downstream.
John Quick
Smartvox Limited
Web: www.smartvox.co.uk
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