› VitalPBX Community Support › General Discussion › Cant register Grandstream GXP1625
Im unable to register Grandstream phones. I updated the firmware to the one adviced by Vital and still not working.
PS: no problem with Yealink.
Also, PJSIP is by default on port 5060. Are you registering against that port?
I see Request ‘OPTIONS’ from ‘<sip:172.16.48.14 and the phone has another Ip adress