I am at wits end with this problem. We have some new dialup we are opening... we have a DS3, which is going through a Carrier Access to split into 28 PRIs. These PRI's are going to two Total Controls, each with 14 DSPs, 2 ARCs and a Hiper NMC. We have three huntgroups... one is 10 PRIs, all NFAS... the other two are 18 PRIs, the first 14 are NFAS and live in one chassis, the other 4 PRIs are on the same chassis as the first 10, but use FAS. The Total Controls are flashed with the latest TCS 4.3 code... 5.2.102 for the ARCs, 3.1.7 for the DSPs and 8.2.7 for the NMC. All ports are set for the DMS100 switchtype. The second chassis, the one with the 14 PRIs huntgrouped and NFASed, is giving me lots of trouble. Actually, the first one might be giving me trouble as well, but less people are testing and the 4 FAS cards never get used as they get traffic after the 14 PRIs in the second chassis overflow. We have had reported problems with low connect speeds and dead air with the second chassis. If I reboot, everything is fine for about 15 minutes, then people start getting booted off. Right now, if I dial I get dead air everytime, however, some people (on card 9 and card 12) seem to be doing fine. In total frustration, I reflashed the DSP cards to 2.0.51, as it is the code we use elsewhere, but the dead air problem remains. These new lines are in a colo, where we get the DS3 directly from a CLEC, which is new to use. We are also using the DS3 widebank for the first time. We are also using NFAS for the first time. I am stumped, and don't know what to try next. Any ideas would be appreciated, and the quicker the better. Thanx in advance. ----Steve Stephen Amadei Dandy.NET! CTO Atlantic City, NJ