Hello All,
I'm facing the following problem:
An incoming call is first ringing on a call center queue:
The UAS is sending a 180 Ringing with SDP and a require: 100rel, the UAC
responds with a PRACK and the UAS again with an 200 OK.
Then the call is actually ringing on a UA (IP hardphone)
The UAS send a 180 Ringing again with an SDP and a require:100rel, but
the UAC ignores this as is seems a duplicate message.
<--
INVITE/SDP supported: 100rel
100 Trying -->
180 Ringing/SDP -->
Require: 100rel RSeq:1
<-- PRACK
200 OK -->
180 Ringing/SDP -->
Require: 100rel RSeq:2
180 Ringing/SDP -->
Require: 100rel RSeq:2
180 Ringing/SDP -->
Require: 100rel RSeq:2
180 Ringing/SDP -->
Require: 100rel RSeq:2
180 Ringing/SDP -->
Require: 100rel RSeq:2
Is the UAS allowed to send multiple 180 Ringing with a require header
field?
Best Regards,
Peter Nijhuis
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