Nortel Networks 1000 - Manual (Page 966)

966 NTRB21 DTI/PRI/DCH 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.
Figure 280
NTRB21 TMDI card faceplate
Note 1: For CISPR B group cabinets, the active Clock Controller
(NTAK20) can only occupy slots 1-3. For FCC and/or CISPR A group
cabinets, this limitation does not exist - the Clock Controller can occupy
any available slot 1-9.
Note 2: The NTRB21 TMDI card requires that the Option 11C be
loaded with at least Release 24 software. If an Option 11C switch
is loaded with Release 24 (or later) software, the NTRB21 can be
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
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