Wired buzzer/intercom in old appartment building
katsik:
Thank you very much. Will try soon and report.
My neighbor connected Magic Jack and buzzer to same line. And it works somehow!
Isn’t danger for device: I am assuming both (intercom line and IP phone) generate some voltage and could interfere/burn each other?
ianobi:
The OBi Line Port simply looks like a passive telephone as far as anything trying to connect to it sees. It will accept up to 100v a.c. as ringing voltage with no damage. When the OBi answers it expects to see up to around 50v d.c. on the Line Port. I'm guessing the door phone system is likely to put forward less than both those voltages.
Shale:
Quote from: katsik on April 04, 2013, 10:58:24 am
Thank you very much. Will try soon and report.
My neighbor connected Magic Jack and buzzer to same line. And it works somehow!
Isn’t danger for device: I am assuming both (intercom line and IP phone) generate some voltage and could interfere/burn each other?
I presume "works " means that he hooks a phone in parallel to the Magic Jack phone jack and having the phone ring when somebody is at the door. Also being able to pick up the phone in the apartment and dial out. Is that it? I doubt that the MagicJack is responding with something useful when somebody presses the doorbell or intercom button in the lobby.
What would "work" mean in the case of your OBi110? Same thing?
katsik:
All correct. Only 1 line for all. We can say MagicJack is analog to OBI100.
Somehow handset (wireless BTW) responds properly to MagicJack and to doorbell...and opens door too.
May be doorbell/intercom was designed not to interfere with analog land line, what actually MagicJack emulates.
katsik:
"The OBi Line Port simply looks like a passive telephone as far as anything trying to connect to it sees. It will accept up to 100v a.c...."
Same thing about Phone port?
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