[asterisk-users] IP door opening devices

[C F]

leave the existing keypad there. as for integrating it with asterisk.
use an ata with 2 FXS ports. one FXS port connect to a viking door box
http://www.vikingelectronics.com/ and set the ATA to do hotline on it.
that door box is a regular analog phone in the shape of a door box
that when call is pressed it goes offhook hence the requirement of
hotline mode. it also has auto answer that when you call the box it
goes off hook automaticaly.
then use a relay from http://www.mikesandman.com/ that gets activated
on ring connect that to the second FXS and that will unlock the door.


On 7/24/08, Chris Bagnall <lists at minotaur.cc> wrote:
> Greetings list,
>
> We have a client with an analogue door intercom/opening unit which we're
> attempting to replace with an IP variant. The existing unit has the
> following functionality:
>
> 1) Intercom - visitor hits "call", talks to operator
> 2) Door opening - operator can open the door by dialling a 4-digit PIN
> followed by * (the door unit interprets the DTMF tones)
> 3) Door opening - the door unit has a numeric keypad to enable approved
> persons to enter by entering the 4-digit PIN on the keypad
>
> We've tried getting the existing unit working with an ATA, but it's only
> about 50% reliable (hangup not always detected, DTMF not always detected,
> etc.), so it's probably time to look at fully IP alternatives.
>
> Any suggestions gratefully appreciated.
>
> Regards,
>
> Chris
>
>
>
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