[asterisk-users] IP door opening devices

[Fons van der Beek]

Siemens HC 450 Dect intercom does exactly what you want
it doesn't come cheap, but works like a dream..........


Gordon Henderson schreef:
> On Thu, 24 Jul 2008, Chris Bagnall 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.
>>     
>
> There was talk of this a week or 2 ago on the list - look into the 
> archives. I don't think there was anything that successfull though...
>
> I have to say though - if you have such an integrated unit that needs 
> nothing more than an analogue connection (and power, presumably), I'd love 
> to know the make - for me, (or rather one of my clients) it would be 
> worthwhile trying to find an ATA that would work with it..
>
> Got a name/website for the opener device?
>
> Gordon
>
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