[asterisk-users] IP door opening devices

[Julian Yap]

C F,

Does the 2nd port of the ATA with 2 FXS ports just work like a
'pass-through' that is connected to the DTMF Relay?  Or am I totally
off track?

Any ATA's with 2 FXS ports that you can recommend?

Thanks,
Julian

On Thu, Jul 24, 2008 at 3:27 AM, C F <shmaltz at gmail.com> wrote:
> 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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