At 12:25 AM 11/20/2003 -0500, David Lesher wrote:
>So a friend lives in a ~16 suite condo. The existing door/intercom
>is junk. The apartment sets are as study as the old Soviet Union
>phones I saw in the Third World -- breath on them and they break.
>
>So, replacement choices...
>
>Most such systems use an outgoing line and a speeddialer. That's
>~$270/year for the POTS line. With a 100 unit building, that's
>no sweat; with 16 it is.
>
>Eons ago, there were systems that physicaly broke broke the called
>apt's T & R and rang with local ring/battery. Do they still exist?
>
>I was thinking the better idea would be a KXTD816 or such with
>no CO lines attached. The advantage is, the subscriber sets are
>whatever the owner wants: Radios Hack, K-mart etc.
>
>For the front door, I'd need one of the panel mounted
>speakerphone/speed dialers. I see them {"Hit #[apt no] to call;
>* to hang up"}.
>
>What say the Brain Trust?Depending on what you started with in terms of cable pairs, you might consider a Valcom 136 RT intercom. It has all of the elements you need and an extremely low cost. You'll need a minimum of 4 wires to a unit (T,R,B,R) and a 5th if you want to use a button to release the door. The talk path and ground is common to all phones. The beauty of the system would be that in a closed loop you don't need a Viking lobby box or station dialer or a phone line. Of course you have to sell the customer on having a phone, a button and a buzzer to replace the intercom they now have :-) Carl Navarro _________________________________________________________________ KX-T Mailing list --- http://kxthelp.com/ Subscription changes: http://kxthelp.com/mailman/listinfo/kxt
