Asterisk - CISCO phone registration via PJSIP

Good day to all,

Is it possible to get the following CISCO phone models to register using PJSIP & if so what settings are required?

7821s, 7941’s & 7942s?

They were able to register previously with CHANSIP if I modified a few advanced extension settings, but the same settings don’t appear to be available for the PJSIP driver.

During the registration attempt the request is generated from a port other than IP and port other than 5060, however the device UAC anticipates receiving responses on port 5060 ( as specified within its contact header)

Does anyone have a work around for this? & thank you very much for your time and assistance in advance.


Please confirm that Rewrite Contact and Force rport are both set to No. If you still have trouble, post a SIP trace (pjsip set logger on) showing the incoming REGISTER and the 401 response.

Thank you very much for your time and assistance Stewart (That did the trick).

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