02-24-2006 01:38 AM - edited 03-03-2019 11:51 AM
Hi all,
I've a customer doing a E1 connection from 2611XM to a Lucent/Alcatel device. I checked through Cisco web and notice there's a module (Cisco E1/T1 ISDN PRI) which is suitable. My customer (Lucent/Alcatel) end told me their connector is RJ45, and since the Cisco module also a RJ45 connector, can we use the plain UTP cable?
I gone through Cisco site and for this particular module, there's only 2 type of cables offering as follows:
CAB-E1-RJ45BNC - E1 Cable RJ-45 to Dual BNC (Unbalanced)
CAB-E1-RJ45TWIN - E1 Cable RJ-45 to Twinax (Balanced)
I can't find the right cable. And I've heard actually the cable is RJ-48. Could it be possible we crimp the cable our own?
02-24-2006 03:01 AM
Hi,
most of the E1 connections now (voice and dial-up gateways especially) possess the RJ-45 (RJ-48C indeed) connector. So - yes, you can use a regular UTP cable to interconnect your Alcatel PBX/PSTN switch (or whatever) with the Cisco gateway.
02-24-2006 03:02 AM
Hi,
The cable used for E1 lines with RJ4 termination is pretty much a standard. You should be able to crimp your own. The pins used for E1 circuits are:
1 - RX ring
2 - RX tip
4 - Tx ring
5 - Tx tip
Therefore, to make a cable to connect these up,use the following pin connections:
1 -- 4
2 -- 5
4 -- 1
5 -- 2
If the above does not work, it may mean that the pins are swapped on one of the sides. In this case, a straight-through cable should do the job.
Hope that helps - pls rate the post if it does.
Paresh
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