I am pasting my versions as extracted from the TCM. I am at a loss for why sets of modems hang and the card requires a reboot every few days. We have 2 such racks, both with the same versions of the code and they both do this now. (one more than the other). And it seems, but could just be perception, that it is only associated with a few cards/lines. On the rack shown below it is card 1 and card 5, for sure, that do this. I know I have seen this problem talked about. Has anyone seen if this is a line level problem from the telco or something? Both of these units are within a city block of the telco switch. Can I add attenuation on the line with some type of resistance or set it in the unit itself? If I could test things without the telco getting involved everything would go much smoother. 3Com 17-Slot Chassis with PB clocking 1 3COM High-Density 24 Channel NAC B158CSZA 1OQ 0.49.0 8192 2048 0000000000000000 2.0.19 2 3COM High-Density 24 Channel NAC B168CVPA 1OQ 0.49.0 8192 2048 0000000000000000 2.0.19 3 3COM High-Density 24 Channel NAC BCI7C8M4 1OQ 0.49.0 8192 2048 0000000000000000 2.0.19 4 3COM High-Density 24 Channel NAC BC97B9Z4 1OQ 0.49.0 8192 2048 0000000000000000 2.0.19 5 3COM High-Density 24 Channel NAC B249S10G 1OQ 0.53.0 8192 2048 0000000000000000 2.0.19 6 3COM High-Density 24 Channel NAC BC87B123 1OQ 0.49.0 8192 2048 0000000000000000 2.0.19 7 3COM High-Density 24 Channel NAC B229Q4AG 1OQ 0.53.0 8192 2048 0000000000000000 2.0.19 8 3COM High-Density 24 Channel NAC B789BLGM 1OQ 0.54.0 8192 2048 0000000000000000 2.0.19 16 3COM HiPer ARC NAC B478PF8Y 20C 19.0.0 65536 8192 0000000000010000 4.2.32 17 3COM Network Management Card with clock B4F8Q4Y6 1U600000 6.0 16384 8192 0000000000000000 6.1.17 1 3COM T1/E1 HDM NIC 0 0 0000000000000000 2 3COM T1/E1 HDM NIC 0 0 0000000000000000 3 3COM T1/E1 HDM NIC 0 0 0000000000000000 4 3COM T1/E1 HDM NIC 0 0 0000000000000000 5 3COM T1/E1 HDM NIC 0 0 0000000000000000 6 3COM T1/E1 HDM NIC 0 0 0000000000000000 7 3COM T1/E1 HDM NIC 0 0 0000000000000000 8 3COM T1/E1 HDM NIC 0 0 0000000000000000 16 3COM Dual 10/100 Ethernet NIC - PCI based 0 0 0000000000000000 17 3COM Ethernet NIC 0 0 0000000000000000 - To unsubscribe to usr-tc, send an email to "majordomo@xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.