On Mon, 28 May 2007 13:12:02 -0400, mm
wrote:

On 28 May 2007 03:34:32 -0700, Daljit wrote:


[snip]

What do you have in your box? I would expect to see a speaker (from
the rear) and a microphone (from the rear). How many wires in the box
go to devices on the front panel of the box? In addition to whatever
wires go to the switch, four?? If so, two go your speaker and two go
to your microphone.

If they're like some of the wired intercoms I've seen, they may work
with only 2 wires. The speaker and microphone are even the same
component. I've forgotten how they get the signal (call) on those
wires too, but they did it.

[snip]
--
Mark Lloyd
http://notstupid.laughingsquid.com

"God was invented by man for a reason, that
reason is no longer applicable."