[Asterisk-Users] Doorbells & Door Intercoms

[James H. Thompson]

The combination of a cheap ATA and standard doorphone would seem easier (and maybe cheaper).
For door phone hardware check out: http://www.vikingelectronics.com/

Jim

James H. Thompson
jht at lava.net


----- Original Message ----- 
From: "Adthrawn" <adthrawn at adthrawn.freeserve.co.uk>
To: <asterisk-users at lists.digium.com>
Sent: Tuesday, January 06, 2004 11:45 AM
Subject: [Asterisk-Users] Doorbells & Door Intercoms


> Hi,
> 
> Does anybody know of a VoIP compatible doorbell or door intercom unit?
> 
> I've contemplated buying a cheap SIP phone, ripping it apart, and 
> putting it inside an IP66 sealed unit...
> 
> It would need:
> 
> - At least one speed-dial key, or some way to make every button dial 
> the same extension number
> - PoE (power over ethernet), so I can power it off the central switch
> - cheap enough to rip apart
> 
> Any ideas?
> 
> Also, is there anyway in the Asterisk config, to ensure anything dialed 
> from the phone in turn just dials a specific extension?
> 
> What I'm thinking: Door bell button rings extension 8888, which rings 
> all phones. Caller ID is "Front Door Entry" or whatever, and the 
> Cisco's Dial Plan has a doorbell chime as the ring tone for this 
> specific extension filter (so 8888 has it's own ring tone). There is a 
> time out of 5 to 10 seconds, which represents the time it takes for a 
> normal doorbell to chime and stop.
> 
> Now, the intercom bit... If I want to find out who it is before running 
> downstairs, I simply pickup my receiver and ask them. Otherwise, I just 
> leave it and the ringing stops, and the call is terminated.
> 
> Also, if I want to find out who is outside, I can just dial a special 
> number, say 8889, and I connect to the phone outside. Now, can the 
> phone be set to automatically pickup a call?! Or perhaps, If I find a 
> Cisco 7940 with a damaged case on eBay, I can rip it apart, and then 
> use the SIP/SCCP Intercom feature on that phone only?!
> 
> Does this sound sensible/achievable?!
> 
> Best,
> Ad.
> 
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