What determines need for BCC3 versus BCC2. BCC2/3 versus BCC1. If I remember correctly the 2, and the 3, have more 'call capacity' for want of a better description.

Now the reason I ask. Lightware 19 rev 3.0. Only T1 trunks,using an 021 T1 card. Complaints of hum,cut-outs, dropped calls. Using an Asterisk to convert PRI to 23 T1 channels. Asterisk is showing strings of red alarms from Mitel. If it weren't for the 'hum' complaint, I'd start right in with the interconnect cables, then the 021, then the Asterisk guts. (Only because from easiest to hardest to change out parts) Could a BCC2/3 possibly be causing this?

When I was young, I was Liberal. As I aged and wised up, I became Conservative. Now that I'm old, I have settled on Curmudgeon.