[asterisk-users] Doorphone vs. Grandstream BT101

[Jay Milk]

marcotasto wrote:
> I did something similar one year ago for a friend of mine that was interested to answer to bell door from internal phones.
> I used an HT286 with a sort of homebuilt analog hybrid with a microcontroller able to automatically answer when the ring was present on the HT286 FXS line (when calling from internal to the external box) and using the auto-call feature of the HT286 when people press the external button. To terminate the call I used a sort of DTMF sequence sent by Asterisk dead-agi script that the micro detects just to hang-up. I've added on the same box an axis camera to have a sort of video on the LAN.
> To be able to safely open the door, I made a little box ethernet based able to receive some UDP packets sent by Asterisk through agi when the received call was transferred on a predefined internal extension.
> It's working well!
> In my spare time, I'm working to have this solution well packed in an easy to build electronic kit (my friend is using a prototype version). If you are interested, I can post my results and the link to my site when they will be ready.
>
> Thank you and bye,
>
> Marco Signorini.
>
>
>
>   
>>> -----Original Message-----
>>>       
>>> From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-
>>>       
>>> bounces at lists.digium.com] On Behalf Of Jay Milk
>>>       
>>> Sent: Friday, 23 March 2007 5:58 PM
>>>       
>>> To: Asterisk Users Mailing List - Non-Commercial Discussion
>>>       
>>> Subject: Re: [asterisk-users] Doorphone vs. Grandstream BT101
>>>       
>>> And contrary to what someone asked me in private, wiring isn't an issue
>>>       
>>> -- I do have cat5 at the door bell :)
>>>       
>>> Thanks,
>>>       
>>> JM
>>>       
>> Like all good geeks should - correct Jay J
>>
>>
>> So did you run two lengths so that you have access to a IP Door >camera as well? Don’t forget a few pairs for the electric strike to >open the door remotely from a web interface as well.
>>
>> 17,000 ft of Cat5, cat6 and rg6 in the house, somewhere around 120 >drops, along with multiple 2" PVC from basement to attic. The front >and back door do have dual cat5s, but I'm not planning on a remote >door strike for either. CCTV is separate and runs on utp baluns into >two 4-channel BT cards, so there's cat5 in all the places where I need >(or may later need) a camera.
Very interesting, no doubt. I was actually considering using a 
pre-packaged speaker-phone circuit and an avr or pic with ring-detection 
and silence-detection to handle pick-up/hang-up, but by the time I get 
this together and wire it into a free FXS port, the grandstream solution 
is so much cheaper and more elegant. Still would like to see it.