sundance-communications.com/forum Forums Wiring - Telecom Carriers - Trunks & Services Cabling Telephones Systems Wiring Bix terminations

i just had to revive this, at work today a maintenance guy, instead of calling me, decided to work on one of the nortel systems, i caught him punching down the bix with a flathead screwdriver!!!!!

I've seen a contractor punching bix down with a credit card....

True story.

An alarm guy told me about the punchdown tool he had for a 66 block...a pocket clip flathead screwdriver

I hope you told him Phillips head works better

ive done that in a pinch

Ive done my share of 1A's but dont recall how 1A2's or other bix waffers are internally wired. Anyone care to clearify me on this?

Don't quote me on this, but I recall that the (5A?) had five pairs multipled on the front with one input pair on the back. This permitted multiple appearances for cross-connecting.

This "one-in, five-out" design was similar to the 66B4 block.

If additional multiples were required for larger 1A installations, the input pair could be multipled on the back side to expand the number of front-face pair appearances.

Basically, the white/blue position on the back of the block was tied directly to the white/blue through white/slate pair positions on the front and so on for the remaining four base-color positions.

There was another BIX version designed to accommodate a ringing diode matrix with the diodes placed in the back (6A?).

You're half right, Ed.

The back is the same as the front, at least on the 1A, 1A4, 2A, 5A & 7A blocks.

So, in theory, with a 5A block, you could in a pinch have 1 input pair and 9 out...but that's pushing it. I always just bridge on the rear for the next group of 5, or change the block out for a 7A.

Um guy's...this thread is a year old...

I know, Dean. I just figured that this information might be useful in a search on this forum. I'm always careful to review prior posts before I add to old ones.