Door intercom solution wanted

[daballiemo]

Hi all,

my ISDN pabx has finally "almost" died. So I am now seriously considering to swap all over to the Asterisk implementation of LMCE. However, there is still one small problem; i've got a door unit which passes on a press on one of the buttons to the pabx which in its turn will rings the phones in the house with a specific ring interval.

Now my question: What can be arranged re implement my doorsystem but now based on LMCE and without costing a fortune (I think 300 euro for a doorbell is a fortune). Maybe you can tell what and how you use it, so I can learn from that.

I have got a door unit with button and a whole printboard turning it into a "xyz" protocol on a little flatcable that is hooked up to the pabx. Reuse is possible. I am still trying to find the protocol it uses.

[Marie.O]

If the door unit can interface to a regular phone socket, get an ATA (Google for grandstream ATA to get an idea).

[daballiemo]

It does not interface to Ata regretfully but it has a kind of special PABX interface, but thanks for the idea.

rgds

Han

[Marie.O]

The least expensive solution might be, to keep the ISDN PABX and interface that into Asterisk.