[Asterisk-Users] door phone

[Jon Pounder]

That's an interesting solution.

Caveats :

- To have a door phone and door release would require 2 ports on the pbx
unless you don't want to be able to call the doorphone, or release the
door while the caller is still on the line.

- if the doorphone is a regular phone and uses this method, anyone could
simply apply 120VAC to the phone jack for it and presto, the door opens.





>
> For a door release, I have a cheap radio-shack device which is supposed
> to light up a lamp when a phone rings.  Basically, it has a contact
> which is activated by the ring signal on a telephone line.
>
> I wired this up to the door release in the office, and have it hooked
> up to our (non asterisk) PBX.  So, anyone can open the door by dialing
> the extension.  The ringing itself opens it.
>
> The radio shack doojigger was probably about 10 bucks.
>
> -SteveK
>
>
> On Nov 26, 2003, at 6:12 PM, Jon Pounder wrote:
>
>>> Hi,
>>>
>>> Anyone know anything about Asterisk's support for door phones?
>>> Receiving
>>> the call from the door intercom system, opening the door, etc?
>>>
>>> Any hardware recommendations? I understand that the equipment we have
>>> now is Panasonic proprietary and came with the currently deployed
>>> Panasonic TD12-32 pbx.
>>>
>>
>> I just use an ordinary "disposable" phone, and put the zap channel in
>> immediate mode. lift the phone and it starts to ring the extensions in
>> the
>> context it jumps to. I can also call the doorphone just like any other
>> extension and it rings when I do so. Basically the keypad is ignored on
>> the phone.
>>
>> as for door release, I have an electric strike on my dsc alarm system,
>> but
>> I have just not gotten around to making an agi that I can use to flip a
>> bit on the parallel port and have that release the strike as well.
>>
>> (2n2222, a 10k resistor, and a pcb mount 12v relay, and a flyback
>> diode,
>> hooked up to the data bit, and in parallel with the alarm release
>> relay.)
>>
>>
>>
>>>
>>>
>>> We intend to deploy Asterisk in a 72 extensions + 16 trunks in a
>>> while,
>>> so any info will be great.
>>>
>>>
>>>
>>> thanks
>>>
>>>
>>
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>
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