[osmocom-analog] PBX sends PRACK during call progress which osmo-cc-sip-endpoint rejects

Andreas Eversberg andreas at eversberg.eu
Sun Apr 25 12:38:05 UTC 2021


On 29.03.21 23:34, Markus Stamm wrote:
> Following a 183 Session Progress message from osmo-cc-sip-endpoint to 
> the PBX, the PBX transmits PRACK, and osmo-cc-sip endpoint responds 
> with a message 504 Method Not Allowed. The PBX ignores this message 
> 504 and keeps ringing the extension until I disconnect the call.
>
> Sipgate, by contrast, responds by sending ACK, not PRACK, and the call 
> connects successfully. 

Hi Markus,

can you try the attached patch? Just add the line as shown in the patch. 
It should allow "PRACK" messages and make the stack reply to them correctly.

Regards,

Andreas



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