Good evening all,
I have a strange one, customer is using a mix of Grandstream GXP2130 handsets and Bria softphones with Sennheiser D10 USB headsets on SIP trunks.
99% of calls work correctly, however there is occasionally, 2 or 3 times a day where the Sennheiser headset signals ring in the ear piece but there is no other sign of an incoming call. Bria does not show a call and GXP2130’s do not ring or display incoming call details on the screen.
However if you pickup a GXP2130 hand piece you can answer a call that isn’t ringing, or if you press the answer button on the Sennheiser headset you can answer the call.
I’m not sure if this is related but the Bria softphones do not receive presence information for busy extensions.