sundance-communications.com/forum Forums General General Telephone & Systems Information Termination of an Amp RJ21x Connector

Hello,

I'm wondering if you need a special tool to terminate Amphenol RJ21x style connectors. It looks as if you can use a 110 punch blade for this, but I don't want to ruin the connector. Any help would be most appreciated.

Thanks.

Louis

RJ-21X just reflects the interface. The 50 pin Amphenol can be wired to a few different blocks, 66 and Krone are the most usual. I have never seen a 110 though I don't doubt that they exist.

I suspect that you have a Krone, it looks similar to 110 but you cannot use a 110 blade with it. You need to use a Krone blade.

Probably the way to tell if it is Krone or not is to go here-
https://www.adc.com/krone/literature/catalog/Sec_5_25-_and_50-Pair_89D_Style.pdf

and look at the pictures.

-Hal

You need an Amphenol tool (butterfly tool) and the correct head (male or female) that inserts into the tool. Once the cable is fanned into the connector the tool is closed, terminating the pairs and cutting off the slack.

Buy your cables pre-made. The tool is still made, so are the heads, but the time and material still makes it cheaper to buy them pre-made.

KLD

Maybe lguskey needs to be more specific about what he is doing. Are you just looking to terminate 25 pair cable with an Amphenol?

An RJ-21X describes a 25 pair network interface NOT an Amphenol connector- though the RJ-21X does use one.

I'm confused because I can't see how you could think a 110 tool might be used to terminate an Amphenol. I have heard of people thinking that a Krone block can be punched down with a 110 tool however.

Which is it?

-Hal

I am with Hal rj21x is a 66 style block is it not ?? but the pre made is always the best way to go (I use to make mine all the time but when it all added up the premade ones were cheaper)

How bout this RJ-21X (Registered Jack). Is it a jack? Only time we make those AMP 25pr connectors is winter when things get slow. I'm pretty good at that so I can make them quick once I get into a rhythm.

Hello Hal,

What I'm doing is taking a 25 pair cable, terminating it at a 48 port RJ-45 panel on one end, and then connecting it to the TD-1232 via those amphenol connectors (male).

Since aquiring the butterfly tool to make the amp connector termination is very expensive, what I've done is take a 25' premade amp male to male 25 pair cable, cut the connector off one end, and term it into my 48 port panel (I actually used 2 cables since the Panasonic only holds 16 single pair extensions per cable)

Hope that answers your question.

Thanks to KLD who gave me the idea of buying pre-made cables!

Louis

if you need to do a few or for emergency cables there is a palm handtool made by amp that terminates the wires one at a time.

I bought one on eby for less then 50.00 when I sold my butterfly tools.

I carry it and a couple of male and female plugs with me for emergencys . but on the whole I buy premade.

Since aquiring the butterfly tool to make the amp connector termination is very expensive, what I've done is take a 25' premade amp male to male 25 pair cable, cut the connector off one end, and term it into my 48 port panel

Yup, I can probably say that is what we all do. Few of us can justify the cost of a butterfly tool and supplies.

I guess the butterfly tool made sense back in the days of the 1A2's when station wiring was multiples of 25 pair but for what we do today premade cables are the way to go.

-Hal