can you split a CAT6 into two T1 cables? 4

[stevenriz]

Hi, I'm wondering if we can take a single CAT6 cable and split it into two for T1 use? I'd rather not run another CAT6 between locations if I don't have to.

I see the T1 pinout to be 1,2 and 4,5. Will it work?

 

[iolair]

Don't see why not. It "should" work, but you never know. Crosstalk would be the issue I'd worry about.

Iolair MacWalter
Network Engineer

 

[trvlr1]

You should have no problems doing this, a T-1 does not need the speed/bandwidth advantage of a CAT 6 cable, so, in effect, destroying the CAT 6 capability in this way should work for you.

 

[stevenriz]

Thanks!! Ya we have 7 T1's for our internet connection and am adding an 8th for voice. I might split one for the internet and steal a full one for voice. Am I correct in the pinouts?

12,45 on one side then those colors relate to 45,12 on the other side? Or will it be 12,45 and 12,45 on both ends?

 

[trvlr1]

12,45 is correct for voice T-1

 

[stevenriz]

Thanks again!!

 

[alamtnman]

just a note if you are comingfrom smartjack to your voice equipment then it will usally be a straitght thru connection(12-45=12-45. if you are getting your t1 off of a router ie using a CLEC alot of times you are required to use a crossover cable (12-45=45-12)


T.R.
RCDD

there may not be any stupid questions
but their is a bunch of inquizative idiots
(myself included at times)

 

[stevenriz]

great point and thank you for the last input. We are going from the smart jack right into the phone system. So if I understand I will crimp 12,45 same pairs on both ends.

 

[SYQUEST]

Cabling for DS1 circuits need to be individually shielded pairs! CAT 5e and CAT 6 cable is NOT for DS1 circuits! Category cables are for ETHERNET use. ETHERNET transmission is NOT DS1 transmission. Just because uninformed people do it, doesn't make it the right way to do it. I have covered this subject in a previous post here: thread575-1278151: Extending the demarc for a PRI: Extending the demarc for a PRI

Using the right parts and materials helps keep "Murphy" away and the customers happy, especially when the work is done correctly.

....JIM....

 

[Dexman]

I agree with Jim. When it comes to extending T1 circuits, its best to use cable that was designed for that purpose.

I "FEATURE 00

 

[PBXTech]

just posting the info for the Lucent/Avaya part numbers (comcodes) for DS1/T1 cables. contact your local Avaya business partner for pricing.

Desc: 25ft RJ <-> RJ
CC: 700287683
PEC: H600383G1

Desc: 50ft RJ <-> RJ
CC: 700326457
PEC: H600383G2

Desc: 75ft RJ <-> RJ
CC: 700287709
PEC: H600383G3

I agree with Jim as well. using substandard cabling for a T-1 can lead to problems, especially in regards to voice circuits.

 

[stevenriz]

Well, these are all good points!! We've been running all our T1 extensions using CAT6 without any issues to be honest. This particular extension is over 100ft and I'd rather not run a new cable. Plus this particular company has a closure date so it will be a temporary thing. I think we will test it some more before we make the decision to use CAT6...

 

[FesTek]

If only 4 wires (2 pair) or pins are being used. Because there are 8 conductors in a cable it is entirely possible and more economical to run two T1's on the same cable as long as the wall data jacks are side by side.
Here is how to run two 10Base-T drops on one line

http://www.contact-directconnect.com/images/Duplex.JPG

you just have to use the pin out you stated

Don't worry about cross talk ,if it doesn't work run a new line.

Their is only one telephone cable coming into the building and it is running phones,faxes,alarms & your T1 and now TV is run on that cable as well it works OK!!!

Now the other contractors would have to run a another cable and supply cheap patch cords because they don't understand the concept of saving money and doing a nice clean and neet job and most of them can't make a patch cord.
They only understand it would be another $150 to install another cat5 cable + plus patch cords
note: and probally the cheapest crap they can get

 

[cwc3]

there is cable designed by bell labs specifically for t1
cable runs and its cat2 individualy shielded twisted 2 pair
and you run one of these for each t1 that you extend !

http://www.youtube.com/watch?v=qjMxPoPojz4

 

[OzzieGeorge]

Here in OZ you can buy pre made splitter/combiner leads that are specifically wired for these purposes. That way you just use standard patch leads and no messing around.