splitting cat5e pairs

[Guest]

Hi all,
This is the only place I could find to try and post this question. Hope it
is the right place.
Anyway, I have cat5e network setup. I discovered that our telephone vendor
has come in and split some of my cat5 drops and is using a pair from the cat5
cable to connect a phone line. (I happen to be looking in the attic and
found some cables that were wired together. )
Can anyone tell me what problems I could be looking at down the road with
these drops? Does the splitting cause less bandwidth for the computer
attached?
My nic cards are 10/100. Does 100 require all pairs of cat5?
I have not taken one apart to see what pairs they wired to.
Thanks in advance for any help on this.
Sher

 

[Jack \(MVP-Networking\).]

Hi

Regular Network connection uses only two pairs. Howvever using the other
pair for Tel. line is a Bad idea. The telephone line carries higher voltage
signal that introduces lot of noise when the telephone is ringing, High
Voltage and noise with Network traffic is a big Network No No.

Howvever make sure that indeed he used the working Network cable. Many
installations of new houses use separate Cat5e for telephone too.

Jack (MVP-Networking).