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

["Andrew Kilgore" <amkilgore@xxxxxxx>]

Found this:

"The BT Drop Cable (The cable coming from the outside world)

This often has Orange, White, Green and Black wires.  Usually (but not
always) Orange and White are the active pair and go to connections 2 and 5.
 In some master boxes (such as the type with a removable front section)
they go to two connectors marked A and B.
Which way around they are connected usually doesn't matter but as Rick
Hughes kindly pointed out some modems (especially older USA sourced ones)
and some answering machines are fussy about polarity, so it's wise if
possible to check the voltage on the line and connect -48V to the B leg
(J2) and 0V to the A leg (J5). "

(from: http://tinyurl.com/4gu1)

Worth a go...!!!



----- Original Message -----
From: Andrew Kilgore
To: ukha_d@xxxxxxx
Sent: Saturday, February 07, 2004 11:06 AM
Subject: Re: [ukha_d] Re: Phone cable wiring for HomeVision Phone/Serial
add on...


Hi Frank,

A quick look at the PCB reveals that it only uses lines 2 and 3 on the
incoming RJ.
I have tried both possibilites wiring these up to pins 2 and pins 5 on the
BT with mixed results (see previous post).
Time to check the master socket and make sure it's wired porperly.

Thanks,
Andy.
----- Original Message -----
From: Frank Mc Alinden
To: ukha_d@xxxxxxx
Sent: Saturday, February 07, 2004 10:40 AM
Subject: Re: [ukha_d] Re: Phone cable wiring for HomeVision Phone/Serial
add on...


Hi Andy
Is the unit a brand new unit sourced  in the UK ...???....I
recently tried to get the phone/serial unit but apparently it doesnt detect
the Aussie dial tone and did some googling looking for a chip that was
suitable for aussie...Looks like theres a different chip for the UK..
Cant you trace the connections on the pcb for the line in ????
Frank

----- Original Message -----
From: "Andrew Kilgore" <amkilgore@xxxxxxx;
To: <ukha_d@xxxxxxx;
Sent: Saturday, February 07, 2004 9:29 PM
Subject: Re: [ukha_d] Re: Phone cable wiring for HomeVision Phone/Serial
add
on...


> 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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