Definitions for "Channel Service Unit"
Keywords:  csu, loopback, premise, prd, ntu
The CSU provides the T-1 connection between the iSC-3 and the telephone company that provides the T-1 line.
Premises equipment that complies with Bell Technical Publication 62411 in providing loopback, keep-alive signals, alarm and status conditions.
A unit located on the customer's site that terminates a channel. Used with the customer's logic and timing recovery circuitry.