Yep, MUCH preferred to use a digital trunk to the switch, especially if I can get a PRI to it. A channel bank vs a PRI is like Dial-up compared to cable/DSL.
One thing I found in numerous cases, after they started using ROUTERS to emulate a CO Circuit.., almost every Legend that made that move had issues with alarms, the circuit, slips etc. THey may be better now, but I'll never try it again on a Legend!
Give me a REAL PRI/T1 !!
In your case if it's a matter of You Had copper CO lines and wanna use what you have, it would be WELL worth your expenditure to just add a T1 card to your system and abandon usage of the copper line ports. Your voice quality, conferencing, and especially Off-Premise transfers will be substantially better.
MrTelecom1
Re-Living the AT&T/Lucent/Avaya issues since 1979!