"Buzzing" in by digit press, Intercom

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Stewart:
Using a splitter, connect both a standard phone and the intercom to the OBi line port.  Test that when calling from the standard phone, sound is ok in both directions.  If not, see whether disconnecting the (inactive) intercom makes a difference -- there may be an electrical noise problem.

Next, try picking up the standard phone just after the intercom has dialed, and listening to both sides of the conversation; that may give a clue as to what's wrong.  (I hope that the intercom is not too "smart".  It might disconnect when it sees the other phone being picked up.)

QBZappy:
JonathanRC,

I don't know if you know this, but the OBi has a paging feature. If feasible, you can setup an inexpensive phone to replace the intercom.

Stewart:
Quote from: QBZappy on February 29, 2012, 06:45:03 pm

If feasible, you can setup an inexpensive phone to replace the intercom.

Huh?  Even if you could mount the cheap phone so it would be hard to steal, and use OBi speed dials to reach the correct tenant, how could you possibly cause the tenant's button press to unlock the door?

QBZappy:
Stewart,

I have an electric strike/buzzer at my door. That's how I do it. You need some hardware for this setup.

Stewart:
Quote from: QBZappy on February 29, 2012, 06:59:51 pm

Stewart,

I have an electric strike/buzzer at my door. That's how I do it. You need some hardware for this setup.

Can you please be more specific?  Is this a device that is bridged across the line and detects DTMF, somehow not false tripping on the visitor's button presses?  Or, if this is separate unit, how would the OBi control it?

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