(usr-tc) Total Control Problem

I picked up a used Total Control unit with a total of like 48 modems in it. The first modem card (with 4 modems) in it will all answer calls, but none of the other modems will get calls. Can anyone familiar with this unit think of something I might have missed or that I can check to see what the deal is? Thanks! Michael - 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.