RE: Fw: [OT] Phone and data services over cat5

["Ian" <ian@xxxxxxxxxxxxxxxxxxxxxxxx>]

Matt

Given the wiring hell that is the cable infrastructure of most large
offices... I don't think you have anything to worry about - once you have
seen wiring frames with single stranded cables being thrown from place to
place like something only a 3 year old and a tin of spaghetti should be
able
to produce... ;)

I have ran almost every combination going across cat5 at one point or
another - ethernet + isdn, isdn + 2 pstn, ethernet + pstn, 2 isdn, isdn +
cctv... and so on.

The only thing to bear in mind is to be careful, use a cable tester to make
sure the wall sockets are wired the way you think they are *before*
plugging
cables in, and make sure the wiring of the cables is *clearly* marked
(using
something like the little cable ties with a label "window") - the
last thing
you want is someone picking up your super-combo cable and trying to use it
as a patch lead.

Some ISDN cards (I have a eicon one) have the "unused" connectors
grounded,
so you have to watch for things like that - a good practice is don't hook
up
the unused pairs to be "tidy" - it could end in tears.

One other thing - don't go across pairs. You won't get (any noticeable)
interference running different services across the unused pairs if they are
wired properly, but if you used (for example, orange and blue-white for one
service, and orange-white and blue for another, you will get problems (if
it
works at all!)

Ian.

-----Original Message-----
From: Matthew Miles [mailto:m_miles@xxxxxxx]
Sent: 19 March 2005 13:49
To: ukha_d@xxxxxxx
Subject: Re: Fw: [ukha_d] [OT] Phone and data services over cat5



Hi Gareth,

I plan to use the two 'spare' pairs for connection to a BT Revelation
system
- as I may use systemphones with this in the future I will need all 4 wires
connected.  My question is that by doing this will I create any
interference
or degredation of the signal on those wires (caused by signals on the data
pairs)?

In summary, is it ok to run 2 signals over 1 cat5 or better to run 2
seperate cables (the phone part will only ever be used as phone wiring, so
it seems a bit wasteful to run it on a seperate cable).

Matt

--- In ukha_d@xxxxxxx, Gareth Cook <g@u...> wrote:
> You have 4 pairs in a CAT5 - only 2 pairs for ethernet data. So you
have 2
> pairs free - you need a pair for the main line, and a 3rd single
wire for
> the ringer.
>
> G.
>
>  Gareth Cook
>  SWG EMEA North Account Manager
>  IBM SWG - BTE Office - Lotus Park, Staines, TW18 3AG
>  Office: +44 (0)1784 445166 - Mobile: +44 (0)7980 445166  AIM Chat :
> TheBoyG - MSN Chat : chat@g...
>  email: g@xxxxxxx
>
>
> ----- Forwarded by Gareth Cook/UK/IBM on 19/03/2005 13:43 -----
>
> Discussion
> Main Topic
>
> "Matthew Miles" <m_miles@b...>
> Today 13:36
>
> .
> Subject:
> .
> [ukha_d] [OT] Phone and data services over cat5 .
> Category:
>
>
>
>
>
> Just a quick question.  Can I run a phone line over the spare pairs on
> a cat5 data run?  i.e use ornage and green pairs for data and blue and
> brown pairs for voice?
>
> I can rig them to run together using an old patch panel and seperate
> the signals out at the other end to 2 seperate data and voice modules.
>  Is this practical?  I don't want to run loads of cables to each room
> as I don't plan to expand network connectivity any further than this
> (1 per room).
>
> Cheers,
>
> Matt
>
>
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>
>
>
> [Non-text portions of this message have been removed]