BCM Epansion Cabinet dropping overnight 1

[jlk53]

I have an BCM 1000. I recently installed a T1 card in the main cabinet ot go along with 2 4 port analog trunk modules. I moved a 32DSI card down to the newly connected expansion cabinet. I made up a 16 ft. straight thru cat 5 cable as I could not find the Nortel one. Every morning when I come in, all the sets are flashing. I unplug the DS256 cable and re-seat it and sets all come up and work all day. Next morning, same thing. Do I need the Nortel cable or could it be something else?

 

[biv343]

It could be the cable. I've seen the expansion cabinets do strange things when the Nortel cable isn't in place. It's a shielded cable, so there's a signal ground between the main cabinet and the expansion.

I did run across a flaky MSC card once that exhibited similar symptoms. Replacing the MSC fixed that problem. I have a feeling that may have been caused by someone connecting a live LAN port to the DS-256 connector at one point in it's life.

Part number for the DS-256 cable is NTAB3304. If you have shielded cable and the proper ends, you could try making one and see if that helps.

 

[jlk53]

Thank you BIV343. would you have the pin-out for the shielded cable. Mine is not shielded. Thanks

 

[steeef]

the cable has to be EXACT 5 Meters!

 

[biv343]

Straight through, make it the same as you'd make an ethernet patch cord.

As steeef says, it needs to be exactly 5 meters - the length has an effect on the timing between the main cabinet and the expansion. Longer or shorter and it'll do odd things.