1064 NTRB21 DTI/PRI/DCH TMDI card
•Card-LAN for maintenance communication
•loopback capabilities for both near-end and far-end
•echo canceler interface
•integrated trunk access (both D-channel and in-band A/B signaling can
be mixed on the same PRI)
•faceplate monitor jacks for T1 interface
•configurable D-channel data rate with 64 kbps, 56 kbps or 64 kbps
inverted
•self-test
NTRB21 provides the following featuresand functions:
•configurable parameters, including A/µ-Lawoperation, digital pads on a
per channel basis, and Superframe or Extended Superframe formats
•AMI or B8ZS line coding
•1.5 Mb Digital TrunkInterface and 1.5 Mb Primar y Rate Interface
•1.5 Mb Clock recovery and distribution of reference clocks
•DG2 or FDL yellow alarm methods
•card status and alarm indication with faceplate-mounted LED
•automatic alarm monitoring and handling
•Card-LAN for maintenance communications
•loopback capabilities for both nearend and far end
•echo canceler interface
•integrated trunk access (both D-channel and in-band A/B signaling can
be mixed on the same PRI)
•faceplate monitor jacks for T1 interface
•configurable D-channel data rate with 64 Kbps, 56 Kbpsor 64 Kbps
inverted.
•self-test
NTRB21 provides the following featuresand functions:
•configurable parameters,including A-Law and Mu-Law operation, digital
pads on a per channel basis, and Superframe or Extended Superframe
formats
•AMI or B8ZS line coding
•1.5 Mb Digital TrunkInterface and 1.5 Mb Primar y Rate Interface
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright© 2003-2008, Nor tel Networks
.