Does anyone have any thoughts or input on this? Thanks
Regards, Jason On Mon, 18 Nov 2024 at 10:20, nz deals <[email protected]> wrote: > Hi Community > > I’m encountering a strange issue with CANCEL requests in my opensips > 3.4.2 setup. Here’s the scenario: > > 1. My carrier sends the initial INVITE without a tag in the To header, > which I forward to a Cisco phone. > 2. The Cisco phone responds with a 180 Ringing message, which includes > a tag in the To header. > 3. When I send a CANCEL request, my carrier does not include the tag > in the To header, and as a result, OpenSIPS also forwards the CANCEL > to the Cisco phone without the tag. > > Because of this, the Cisco phone responds with a 481 Call/Transaction > Does Not Exist error, and the call remains active on the phone without > being canceled. > > I’ve tried modifying the CANCEL request to include the tag in the To > header, but I wasn’t able to modify because the initial INVITE doesn’t > have a tag in the To header. > > Has anyone experienced a similar issue or found a way to fix this? Any > guidance would be greatly appreciated. > > Thanks > > Regards, > Jason >
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