Running 2 ethernet connections in 1 cat5?

As there are 2 spare pairs in the avergae cat5 cable, would it be possible
to use these to run 2 separate ethernet signals over 1 cable? I use a spare
pair in a cable now for a phone line which seems to work well.

I ask becuase I need to run 2 cables over a reasonable distance and 2 cables
would look a mess (can't hide them that well as its rented accommodation).

If this is possible, are there any adaptors available to make this a
painless process or is it a case of just fitting 2 rj45 conectors to each
end with the correct pairs wired up?

Thanks
Rob

On Fri, 7 May 2004 01:13:11 +0100, in uk.comp.home-networking "Rob
Walker" <(E-Mail Removed)> strung together this:

>As there are 2 spare pairs in the avergae cat5 cable, would it be possible
>to use these to run 2 separate ethernet signals over 1 cable? I use a spare
>pair in a cable now for a phone line which seems to work well.
>
>I ask becuase I need to run 2 cables over a reasonable distance and 2 cables
>would look a mess (can't hide them that well as its rented accommodation).
>
>If this is possible, are there any adaptors available to make this a
>painless process or is it a case of just fitting 2 rj45 conectors to each
>end with the correct pairs wired up?
>
Try one of these.
http://www.ebuyer.com/customer/produ...=34965&_LOC=UK

http://tinyurl.com/yw7cp
--

SJW
A.C.S. Ltd.

"Rob Walker" <(E-Mail Removed)> wrote in message
news:409ad496$0$20508$(E-Mail Removed)...
> As there are 2 spare pairs in the avergae cat5 cable, would it be possible
> to use these to run 2 separate ethernet signals over 1 cable? I use a
spare
> pair in a cable now for a phone line which seems to work well.
>
> I ask becuase I need to run 2 cables over a reasonable distance and 2
cables
> would look a mess (can't hide them that well as its rented accommodation).
>
> If this is possible, are there any adaptors available to make this a
> painless process or is it a case of just fitting 2 rj45 conectors to each
> end with the correct pairs wired up?
>
> Thanks
> Rob
>
>
The Betterbox catalogue (www.betterbox.com) has the cable economiser,
product code
CS100Y-WH at ?3.99 each - you need one at each end of course.
They may be available cheaper elsewhere.

HTH

Chris O

On Fri, 07 May 2004 01:13:11 +0100, Rob Walker wrote:

> If this is possible, are there any adaptors available to make this a
> painless process or is it a case of just fitting 2 rj45 conectors to each
> end with the correct pairs wired up?

If you split an ethernet cable like this you'll reduce its speed to
10mbits.

--
-Geoff

"Geoffrey King" <(E-Mail Removed)> wrote in message
news(E-Mail Removed) dns.org...
> On Fri, 07 May 2004 01:13:11 +0100, Rob Walker wrote:
>
> > If this is possible, are there any adaptors available to make this a
> > painless process or is it a case of just fitting 2 rj45 conectors to
each
> > end with the correct pairs wired up?
>
> If you split an ethernet cable like this you'll reduce its speed to
> 10mbits.
>
> --
> -Geoff
>
This product claims to be 100Mbps compliant - I've certainly used them
successfully at that speed

"Geoffrey King" <(E-Mail Removed)> wrote in message
news(E-Mail Removed) dns.org...
> On Fri, 07 May 2004 01:13:11 +0100, Rob Walker wrote:
>
> > If this is possible, are there any adaptors available to make this a
> > painless process or is it a case of just fitting 2 rj45 conectors to
each
> > end with the correct pairs wired up?
>
> If you split an ethernet cable like this you'll reduce its speed to
> 10mbits.

Why? I don't see the logic to this. AFAIK the fact that 100mbps ethernet
runs over cat5 and not cat3 is due to the quality and number of twists in
the pairs not the number of unused ones.

Rob

"Chris O" <(E-Mail Removed)> wrote in message
news:c7fo58$ah4$(E-Mail Removed)...
>
> "Rob Walker" <(E-Mail Removed)> wrote in message
> news:409ad496$0$20508$(E-Mail Removed)...
> > As there are 2 spare pairs in the avergae cat5 cable, would it be
possible
> > to use these to run 2 separate ethernet signals over 1 cable? I use a
> spare
> > pair in a cable now for a phone line which seems to work well.
> >
> > I ask becuase I need to run 2 cables over a reasonable distance and 2
> cables
> > would look a mess (can't hide them that well as its rented
accommodation).
> >
> > If this is possible, are there any adaptors available to make this a
> > painless process or is it a case of just fitting 2 rj45 conectors to
each
> > end with the correct pairs wired up?
> >
> > Thanks
> > Rob
> >
> >
> The Betterbox catalogue (www.betterbox.com) has the cable economiser,
> product code
> CS100Y-WH at ?3.99 each - you need one at each end of course.
> They may be available cheaper elsewhere.

Cheers to all that replied

Rob

On Fri, 07 May 2004 11:36:54 GMT, in uk.comp.home-networking Geoffrey
King <(E-Mail Removed)> strung together this:

>If you split an ethernet cable like this you'll reduce its speed to
>10mbits.
>
That's a new one on me. You may be thinking of 'certified' performance
against 'actual' performance.
--

SJW
A.C.S. Ltd.

"Geoffrey King" <(E-Mail Removed)> wrote in message
news(E-Mail Removed) dns.org...
> On Fri, 07 May 2004 01:13:11 +0100, Rob Walker wrote:
>
> > If this is possible, are there any adaptors available to make this a
> > painless process or is it a case of just fitting 2 rj45 conectors to
each
> > end with the correct pairs wired up?
>
> If you split an ethernet cable like this you'll reduce its speed to
> 10mbits.

dont think so - 100 M UTP ethernet 100 Base-Tx is also certified to work for
12 ethernets in a 25 pair cable - a Telco or RJ-21 connection.

They could be an issue if your install is right onthe edge of working, since
the 2nd ethernet would be much closer than 2 cables in parallel - given the
way Cat5 compliance is designed for worst case interference, drivers, cable
degradation and so on, it is v. unlikely to happen in practice.

And if the worst happens, put a switch at the remote end - a cheap 4 port
10/100 switch would give you 3 connections sharing a single 100 Mbps link.
>
> --
> -Geoff
--
Regards

Stephen Hope - return address needs fewer xxs

"Chris O" <(E-Mail Removed)> wrote in message
news:c7fo58$ah4$(E-Mail Removed)...
>
> "Rob Walker" <(E-Mail Removed)> wrote in message
> news:409ad496$0$20508$(E-Mail Removed)...
> > As there are 2 spare pairs in the avergae cat5 cable, would it be
possible
> > to use these to run 2 separate ethernet signals over 1 cable? I use a
> spare
> > pair in a cable now for a phone line which seems to work well.
> >
> > I ask becuase I need to run 2 cables over a reasonable distance and 2
> cables
> > would look a mess (can't hide them that well as its rented
accommodation).
> >
> > If this is possible, are there any adaptors available to make this a
> > painless process or is it a case of just fitting 2 rj45 conectors to
each
> > end with the correct pairs wired up?
> >
> > Thanks
> > Rob
> >
> >
> The Betterbox catalogue (www.betterbox.com) has the cable economiser,
> product code
> CS100Y-WH at ?3.99 each - you need one at each end of course.
> They may be available cheaper elsewhere.

I got so preoccupied with the novel idea of using 1 cable, it didn't
actually occur to me that I could just buy a cheap ebuyer switch (less than
£10) and put that on one end of the cable and run 2 PC's from that.... Much
easier I suspect, and also cheaper bizarrely!

Rob