I was dispatched yesterday to bring in a new 1mb line to a Nortel/ICS system (little 2 DRS card KSU).

For all the Nortels I've worked on, the CO lines are punched down generally in sequence, lines 1 - 8, beginning at w/bl on the RJ21x feeding the system via amphenol/25 pair cable. On larger systems with expansion cabinets the add'l lines go "punch 2/skip 2" on the 21x.

So this system had me going in circles for awhile. It was "punch 1/skip 1/punch 1/skip 5". I finally decided to try that visual pattern to find where the 5th line (Line 25 to the system) should go. Using the pattern it went on y/or, and in fact came up.

I was in touch with my partner throughout this questionable system. He is Nortel certified, I'm not, I just work on those and other systems. He swore up and down that the pattern I finally determined could not have been proper. Our only thought, after confirming the 25 pair was punched down correctly, is that perhaps the amphenol had been made incorrectly.

Thoughts? Has anyone seen a system with the CO sequence I mentioned? A 20 minute job took over 2 hours! At least I was given the OK to bill for all my extra time....

TIA