G703 - RJ45 - 120 Ohm

Answered Question
Aug 23rd, 2009

Hi All,

I have quite a bit of confusion with G703 as it is not really well documented and it is not really widely used in my region.

Basically, my telco will be providing data via that interface with a RJ45 - 120 Ohm. Which WIC cards is compatible (which is the cheaper alternative) and more importantly, where can I get a RJ45 - 120 Ohm cable? I'd presumed that a straight through cable is required.

I have this problem too.
0 votes
Correct Answer by Paolo Bevilacqua about 5 years 7 months ago

The VWIC is OK, you generally do no need the G703 version. On the 1841 you can also use HWIC-1T1/E1. You can make the cable with using cat 3 or similar.

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Paolo Bevilacqua Mon, 08/24/2009 - 02:12

On which router you need to terminate this circuit ?

The cable can be done on site using a normal crimp tool.

nicholas_ong Mon, 08/24/2009 - 17:08

Hi there, thanks for responding.

I'm thinking of Cisco1841 so what I can find currently is the VWIC-1MFT-G703. Are there other choices?

Also, do you mean that this cable is unlikely to be in the market and we need to get it done manually? Are there any specification as to the type of cable to get?

Correct Answer
Paolo Bevilacqua Tue, 08/25/2009 - 01:25

The VWIC is OK, you generally do no need the G703 version. On the 1841 you can also use HWIC-1T1/E1. You can make the cable with using cat 3 or similar.

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nicholas_ong Tue, 08/25/2009 - 01:56

Thanks for the tip on HWIC-1T1/E1.

Found some other information on the cable. It should be Shielded Foiled Twisted Pair (FTP) with the 120 ohm 8 position modular connector

http://www.bytepile.com/T1_T3_cable_RJ48.php

Paolo Bevilacqua Tue, 08/25/2009 - 12:01

Hi, even if not shielded foiled, will work anyway.

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Posted August 23, 2009 at 7:47 PM
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