Got a chassis with 10 PRI's into it. Just looking for any opinions or information on the following issues: #1. Telco says the switch is a 5ESS. If we configure the DSP's for 5ESS we intermittently lose the D-channels. Telco says that even though it's a 5ESS switch, the PRI's are configured "standard" or "national" and that we should set the Total Control for NI2. Is this normal/correct? Set it up for NI2 and D-channels appear stable and it answers calls. #2. Telco says that even though each PRI has it's own D-channel, that each PRI is configured as it's own single-PRI NFAS group with Interface ID 0. It seems to answer calls whether I just configure for FAS or if I config for NFAS assigning a different NFAS Group to each DSP. Does this matter at all? Seemed kinda wierd, but I haven't worked with PRI's that much. #3. All 10 PRI's are in a single "hunt group" with 4 different numbers assigned to that group. Regardless of the phone number I call, the call comes into the first DSP. If I busy-out that first DSP, dialing any number results in a busy-signal. In other words, if one DSP is not there, calls don't roll over to the next available PRI. I'm pretty sure this is a telco config issue - but is there something I may be doing wrong? Just want to make sure. Thanks for any help. Joel