My apartment building uses an intercom system (an Enterphone 2000) that allows us to open the front door; it uses the telephone wiring, but is independent of the phone provider. Everything works fine if someone calls from downstairs with my phone plugged directly into the jack; but if it is running through my OBi110, I hear nothing if I pick up the phone, and downstairs it appears as if I never picked up the phone at all (it simply keeps ringing and eventually gives up). The Call History shows this:
Terminal ID LINE1 PHONE1
Peer Name
Peer Number
Direction Inbound Inbound
17:55:56 Ringing
17:56:00 Call Connected
17:56:02 End Call
I've tried many different combinations of settings under Physical Interfaces > Line > PSTN Disconnect Detection, but nothing seems to have an effect. Any ideas out there?