Background:
I used MJ for many years hooked into my home's phone wiring. I got fed up with the call quality and decided to make a change. My research revealed OBi and purchased an OBI1022 to replace my desk phone. I got it all setup with GV and realized it does not have a phone port (I had assumed I could just plug this into my home's phone wiring like the MJ). So I ordered the 200 and now have that hooked up to the phone wiring.
Which leads me to my problem...
Both devices are using my GV number. When a call comes in, both devices ring. But once the call is picked up by the 1022 or the 200, the other device is no longer able to connect to the received call. Similar to when a phone in one room can "listen in" on a phone another room. It seems that both devices act individually and which ever one engages the call first activates the call only on that device.
Is it possible to have both devices active on the same call after one device has activated the received call?
I love the 1022 desk phone, but not being able to pick up on a call ("Honey, it's for you!") after it is received by the other device is a little problematic.
That's how VoIP works. You have "endpoints" (one IP phone and one ATA) registered to a SIP server (Google Voice). Each registration is independent. Calls between the endpoints and the server are digital. The IP phone does not convert the digital signal to a POTS telephone analog signal. There is no way to connect it to your other phone lines the way you described.
However, you can connect the OBi 200 ATA's phone jack to your house's in-wall telephone wiring, and then plug analog telephones into jacks in other rooms. Or, of course, do what most people do, plug a DECT cordless phone base station into the 200's phone port, and use as many cordless handsets as you wish.
Finally, Google Voice has a feature that will accomplish the same goal: when you answer a call, and you want to transfer it to another Google Voice endpoint (another OBiTALK device, or an Android or iOS app client), you can push the star (*) key. This will cause all the endpoints to ring again, and anyone can pick up the call on another device or app. You'll need to enable "Incoming call options" on the desktop Google Voice website's settings page.
It should be possible for whichever OBi has answered the call to transfer it to the other OBi or bring the other OBi in to make a 3-way call. Such functionality is invoked by flashing the phone hook to get dial tone and then dialling the other OBi. Either **9 followed by the 9 digit Obi number or a speed dial configured to do that. Page 21 of https://www.obitalk.com/info/documents/admin_guide/OBiDeviceAdminGuide.pdf and 77-79 of https://www.obitalk.com/info/documents/admin_guide/OBiPhoneAdminGuide.pdf
However there are many reports here of that not working properly. YMMV.
Quote from: drgeoff on January 02, 2021, 04:52:43 AM
It should be possible for whichever OBi has answered the call to transfer it to the other OBi or bring the other OBi in to make a 3-way call. Such functionality is invoked by flashing the phone hook to get dial tone and then dialling the other OBi. Either **9 followed by the 9 digit Obi number or a speed dial configured to do that. Page 21 of https://www.obitalk.com/info/documents/admin_guide/OBiDeviceAdminGuide.pdf and 77-79 of https://www.obitalk.com/info/documents/admin_guide/OBiPhoneAdminGuide.pdf
However there are many reports here of that not working properly. YMMV.
I tested that. Call transfer works; 3-way conversation does not.
The methods I described to the OP work.