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 canbe mixed on the same PRI)• faceplate monitor jacks for T1 interface• configurable D-channel data rate with 64 kbps, 56 kbps or 64 kbpsinverted• self-testNTRB21 provides the following features and functions:• configurable parameters, including A/μ-Law operation, digital pads on aper channel basis, and Superframe or Extended Superframe formats• AMI or B8ZS line coding• 1.5 Mb Digital Trunk Interface and 1.5 Mb Primary 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 near end and far end• echo canceler interface• integrated trunk access (both D-channel and in-band A/B signaling canbe mixed on the same PRI)• faceplate monitor jacks for T1 interface• configurable D-channel data rate with 64 Kbps, 56 Kbps or 64 Kbpsinverted.• self-testNTRB21 provides the following features and functions:• configurable parameters, including A-Law and Mu-Law operation, digitalpads on a per channel basis, and Superframe or Extended Superframeformats• AMI or B8ZS line coding• 1.5 Mb Digital Trunk Interface and 1.5 Mb Primary Rate InterfaceNortel Communication Server 1000Circuit Card ReferenceNN43001-311 01.04 StandardRelease 5.0 23 May 2008Copyright © 2003-2008, Nortel Networks.
