Sip Server Sending a 481 error on re-INVITE during a session

[Jwat76814G]

1. Brekeke Product Name and Version:
Brekeke SIP Server, Version 3.10.5.4, Standard

2. Java version:
ver 8 update 281
3. OS type and the version:Windows 10 pro

4. UA (phone), gateway or other hardware/software involved:
Avaya CM/R017x.01.0.532.0 AVAYA-SM-7.1.2.0.712004
Spectralink 8440

5. Your problem:
when a call is placed to the spectra link phones, the call is delivered, rings, and when the call is answered an audio channel is established but with no true audio. avaya is sending a reinvite at the same time that appears to have a different Call-ID than the first invite sent to establish the call. At that point brekeke sends a 481 call leg does not exist and the call is ended by Avaya.
Is there a way to "dismiss" reinvites while a call is in session?

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[Laurie]

Why does the Avaya send re-INVITE with a different Call-ID? (it is not RFC3261 compliant)
I think there is a setting to configure this behavior in the Avaya.

or are there any SBC or SIP-ALG which replaces Call-ID between the Avaya and the Brekeke SIP Server?


> Is there a way to "dismiss" reinvites while a call is in session?

It seems the Avaya ends the call started by the initial INIVTE if the SIP Server rejects re-INVITE even if it has a different Call-ID.