rhack

The short answer is YES. Assuming your 5 T1's are in a single route with a primary and backup d- channel you have a total of 23+23+24+24+24 channels = 118 channels total. In this config, it means all 100 CSR's can be active on a call and another 18 callers can be queueing.

I am also making an assumption that these T1's are strictly for inbound call center traffic. If other users on the PBX make or receive calls on these trunks than we've got a whole new ball game to play.

To get a clear picture for your requirements you need to know approximately how calls per hour, average call length, and desired grade of service.