Have the GDS3710 and trying to get it working with our local (LAN) 3CX PBX v15.5.
I have downloaded and used the unofficial 3CX / GDS.ph.xml template to configure the doorphone.
I have set the doorphone to call my extension. Now when I press the doorbell on the GDS, my extension rings, but when I answer it, the GDS just beeps 3 times and the call is lost.
Odd things, if I have SIP Proxy Compatibility Mode unticked, calls won’t ring to my deskphone but the event logs will show my deskphone IP in place of the GDS. If it is ticked, my deskphone will ring and GDS will have IP of 127.0.0.1.
Is there some setting that needs to be set in the GDS so it identifies itself correctly and calls connect at both ends?
Anything else to check?