I have an older TC chassis with T1/PRI, Quad modem, Netserver PRI, and NMC cards, and two 45amp power supplies. The Netserver and NMC have 16mb ram added (total of 20 I think, the cards have 4mb on board if I remember). I saw a posting to the list indicating that a Hiper DSP card could be added to the chassis as long as the modem density was set properly in the Netserver card for the slot that the Hiper DSP card occupies. Does anyone know if certain versions of software are required in the Netserver and/or NMC to work with the Hiper DSP? I haven't upgraded the software in those cards for quite some time since the chassis works great (except for the occasional modems that won't answer--requires a chassis reset every 60 days or so) and my customers get great x2 and v.90 connects (I use the box myself and usually get a 49333 with the occasional 52000 and 53333--amazing considering we're using channelized T1's with AMI/D4 on this box). If anyone is running a Hiper DSP in a TC chassis similar to mine, I would appreciate feedback on what software versions you're running and how the box has performed after adding the Hiper DSP. Thanks in advance for any assistance and/or info. Tim Brown SumterNet, Inc. - 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.