Hardware description 1065
•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 can
be mixed on the same PRI)
•faceplate monitor jacks for T-1 interface
•configurable D-channel data rate with 64 kbps, 56 kbps or 64 kbps
inverted
•self-test
Software description
Changes from the NTAK09are required for the new trunk card and License
parameters are n service change and maintenance overlays. There is a
change to CardLAN to introduce a new CardLAN ID.The download of PSDL
data is also changed to handle a 32 bit download as well as existing16 bit.
Changes from the NTAK09are required for the new trunk card and ISM
parameters are n service change and maintenance overlays. There is a
change to CardLAN to introduce a new CardLAN ID.The download of PSDL
data is also changed to handle a 32 bit download as well as existing16 bit.
Hardware description

NTRB21 TMDI card

The NTRB21 TMDI card provides 1.5 MBits Digital Trunk Interface or
Primary Rate Interface functionality. It also has a built-in downloadable
D-channel.
The NTRB21 can be used with the NTAK09DTI/PRI card (with the NTBK51
downloadable D-channel daughterboard).
Figure 304 "NTRB21 TMDI card faceplate" (page 1066) shows a faceplate
of the NTRB21 TMDI card.
The NTRB21 TMDI card provides 1.5 MBits Digital Trunk Interface or
Primary Rate Interface functionality on the Option 11C. The NTRB21 has
a built-in downloadable D-channel, and may occupy card slots 1-9 on the
Option 11C main cabinet.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23May 2008
Copyright© 2003-2008, Nor tel Networks
.