You could try either of these commands; enabLE modeM_GROUP ALL (or by specific interface) enable interface slot:1/mod:[1-6] Other than that I've seen old arc/nmc configs cause issues. Try and make sure you're starting off with a clean config on everything if you're still pulling hair. Todd _____ From: usr-tc-bounces+berto=core.com@mailman.xmission.com [mailto:usr-tc-bounces+berto=core.com@mailman.xmission.com] On Behalf Of Shahrooz Sharghi Sent: Tuesday, May 31, 2005 8:32 AM To: Discussion relating to the 3Com/US Robotics Total Control modemsystems. Subject: [USR-TC] e1 interfaces are down I have a TC1000 includes 1 130 Amp PS + 1 hiper NMC + 1 Hiper ARC + 1 E1 DSP (ISDN Code) configuration. in the "List interface" command shows the channels are down: Interface Oper Admin Name Status Status slot:1/mod:1 Down Up slot:1/mod:2 Down Up slot:1/mod:3 Down Up slot:1/mod:4 Down Up slot:1/mod:5 Down Up slot:1/mod:6 Down Up I tested that configuration (exact cards) on 3 different chassis with same result. The only Chassis it shows up up in list interface was one chassis (3com blue) What do you think about my problem? how can I use those cards in other chassis? Thanks a lot