RJ45 cable for PRI?

SBCdd7343 · ‎05-07-2008

Will a normal RJ45 from Cisco Gateway to Telco terminating device work for new PRI? Or is a RJ48 required?

thanks

paolo bevilacqua · ‎05-07-2008

Do not use ethernet cable. Please use only proper T1 cable, 100 Ohm impedence, with the correct pinout ans pair twisting, as per manual.

Rob Huffman · ‎05-07-2008

Hi Jerry,

Hope all is well :) Just wanted to add a note to the good info from my friend Paolo. This doc has some good references for the RJ48 Pinouts;

Hope this helps!

Rob

Zin.Karzazi · ‎05-07-2008

We use RJ45 for our PRIs without any Problems. If you just need a short Cable to connect to your E1, RJ45 would be fine.

rich_harris · ‎05-07-2008

Sometimes the telco terminating box will only accept the keyed RJ48C but in most cases we use RJ45 straight through with no problems.

paolo bevilacqua · ‎05-07-2008

Rj48C twisting is different from ethernet, hence no protection from interference, and bigger radiated interfences.

All is good until strange eproblems happens, at that time you will replace the cable anyway, so why don't do things rights since the beginning.

rich_harris · ‎05-08-2008

Agreed, I'm all for doing things properly and if the telco kit does have the proper keyed socket you are safe.

Rich