Re: Re: Phone cable wiring for HomeVision Phone/Serial add on...

["Andrew Kilgore" <amkilgore@xxxxxxx>]

The story so far (today)...
I initially tried:

BT Pin 2 ---> RJ Pin 2
BT Pin 5 ---> RJ Pin 3

This didn't appear to work, so I swapped the wires round (BT 2 -> RJ 3,
BT 5 -> RJ 2).
This gave slightly better results: HV could now detect on/off hook but
could not receive or send any DTMF tones.
Swapping back to the original setup (above) results in receiving SOME DTMF
tones, no joy sending DTMF or detecting on/off hook conditions (plus added
some noise to the line).

Any ideas...?

(Surely someone out there has one of these and could just check the cable
for me ;o))

Thanks,
Andy.
----- Original Message -----
From: Richard Malcolm-Smith
To: ukha_d@xxxxxxx
Sent: Saturday, February 07, 2004 10:08 AM
Subject: Re: [ukha_d] Re: Phone cable wiring for HomeVision Phone/Serial
add on...


Andrew Kilgore wrote:

> Hi David,
>
> Think I will try it again with just 2 wires connected...

A lot of devices over there bring the line out on the outer pair, as that
is the
often unused second line in the building wiring.

If you use a cable with all 4 wires intact, you end up shorting out your
ringer
capacitor in the phone socket, depending on polarity, either all phones
will
ring nonstop or you will have a line that cuts callers off as soon as it
rings.

Try with 2, and if that works you may need to make up a breakout style
cable to
get your phones downstream of the device, I had to do that with my US
sourced
fax switch some time back. It however shipped with 2 or 3 adaptors to allow
you
to plug phones into the second pair so the need for it was a bit more
obvious.


[Non-text portions of this message have been removed]



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