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#474526 10/17/07 10:23 AM
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I was at my dad's work the other day and an at&t guy was working on a cross box. I was wondering what the little red and white connections are called. He did not use a punchdown tool on these, just twisted it with a screwdriver. Here is a picture I found. https://www.telcodata.us/gallery/outside-plant/p1010105

Thanks guys!


Jeff Moss

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#474527 10/17/07 11:50 AM
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Those are 3M's blocks used in their cross-connect cabinets. They consist of a split barrel that when turned 1/4, they force the wire into the split. You just stick the end of the jumper wire (unstripped) into the hole in the side of the "screw". The rest is magic.

I have to say that the only ones that I have seen are white and ORANGE. Maybe that one is made by a 3M competitor, like Hub Fabricating. 3M's part number is 4320-15M.


Ed Vaughn, MBSWWYPBX
#474528 10/17/07 12:38 PM
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Thanks, Ed. I took a look at 3M's site. They call it self-strip connectors.

Jeff


Jeff Moss

Moss Communications
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#474529 10/17/07 02:15 PM
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Some of the more recent 50-pair building entrance terminals that PacBell/SBC/at&t has installed feature that type of terminal. Also means that they have to install the clip that connects and allows you to clip your butt set onto.
https://www.telcodata.us/gallery/outside-plant/p1010104

#474530 10/17/07 02:59 PM
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Yes, in a perfect world they are great.

They are part of a whole program to equip outside plant with "quiet front" (which is actually a trademark for one company's products) terminals to reduce noise and clicks when technicians and weather get into the terminals.

When looking for tone, on a busy highway, they are difficult to use. When working in a cable maintenance setting, looking for crosses, they are virtually impossible to use.


Arthur P. Bloom
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#474531 10/17/07 08:25 PM
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The grand-daddy is the Q style connector....push and wish it stays. It was around in the early 80s (or earlier) but didn't last long, especially in OSP applications.

ITT used a similar connector on some KSU connections during this same time frame.

Nothing new under the sun, just changes to the ones already tried and dumped......


Ken
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#474532 10/18/07 09:32 AM
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I did notice that test adapter he had also. Goes into the pair and then he clipped his Sidekick onto it.


Jeff Moss

Moss Communications
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#474533 10/18/07 10:47 AM
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Quote
Originally posted by Touch Tone Tommy:
Some of the more recent 50-pair building entrance terminals that PacBell/SBC/at&t has installed feature that type of terminal. Also means that they have to install the clip that connects and allows you to clip your butt set onto.
https://www.telcodata.us/gallery/outside-plant/p1010104
So that's what a Future Momma connector looks like!


Pat Austin
Teleco Inc.
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