ADTRAN Cable T1 ESF CSU ACE - Manual (Page 21)

61202066L1-1B T1 ESF CSU Rackmount User Manual 21
Chapter 1
Introduction
General Description
Most carriers that supply T1 services require an interface to monitor the
T1 line. The ADTRAN T1 ESF CSU RM (Extended Super Frame
Channel Service Unit, rackmount), in either the stand alone or the
rackmount version for the SMART 16 shelf, provides a reliable interface
between the telco or private T1 facilities and the customer premises
equipment (CPE), such as channel banks, T1 multiplexers, and PBXs.
The T1 ESF CSU RM provides functions such as surge protection, signal
regeneration, alarm displays, and loopbacks necessary for circuit
operation. The unit provides the simultaneous use of performance report
messages (PRMs) specified in ANSI T1.403 and maintenance messages
specified in AT&T TR 54016. The T1 ESF CSU RM can convert T1 data
from superframe format (SF) to extended superframe format (ESF),
allowing older SF CPEs to take advantage of the superior diagnostic
capabilities of ESF facilities.
The unit complies with Part 68 of FCC rules and with applicable sections
of AT&T 62411, ANSI T1.102, and T1.403.