I wrote a long time about this, but none of the replys really helped me, and recently it has come back up as an issue, so let's see if new knowledge can shed some light... I have two older chassises with HiperARCs in them... both have Dual-PRI cards, 12 Quads of various Digital and A/D type, a HiperARC and a NMC card. One unit has two HiperDSPs in it... the other has one HiperDSP, but it's not operational yet. These TC's can be seen on my demo TCView page, http://www.dandy.net/statistics/tc.html as Atlantic City and Pleasantville. Both chassis are up to date with TCS3.6 and the lastest code from the Totalservice website... I never can remember the version numbers, but we are _current_. Yes, even 2.0.51 on the DSPs. The problem we have is that when we upgraded from Netservers to HiperARCs, Atlantic City lost the ability to accept ISDN calls. P'ville accepts them fine, but for A.C., they come up in RADIUS as async instead of ISDN. I have turned both boxes inside out to find a difference, but could find none. Both TCs are identical but in name, phone-number and the extra DSP card. Recently, it has come to light that A.C. _is_ accepting ISDN calls, but only on the DSP cards... not the Quads. Hopefully, this will spark some suggestions on enabling ISDN. Thanx in advance. ----Steve Stephen Amadei Director of MIS Dandy Connections, Inc. Atlantic City, NJ - 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.