1054 NTRB21 DTI/PRI/DCH TMDI card
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: On non-ECM system cabinets, the NTAK20 can be placed in
slots 1-9. On cabinets NTAK11Dx and NTAK11Fx,the activeNTAK20
must be placed in slots 1-3 (slots 4-10 cannot be used).
ATTENTION
IMPORTANT!
Each Media Gatewaythat has adigital trunk must use a clock controller clocked
to an external reference clock.
The NTRB21 TMDI (DTI/PRI/DCH) card is required to implement PRI on
the Meridian 1 Option 11C system. It is suppor tedin the Main and IP
expansion cabinets.
The TMDI feature introduces the software changes required for an Option
11C system to support the new TDMI pack. These changes includethe
introduction of a new prompt to replace a function that was handled by a dip
switch on the NTAK09,as well as an extra loadware application to handle
Layer 1, and changes to make the existing loadware files into 32 bit format
instead of the original 16 bit format. To provide CEMUX communication with
the card, changes are also required to create an I/O entry for the card. In
addition the NTRB21 has a built-in downloadable D-channel.
This card requires that the Option 11C be equipped with at least Release
24 software.
This card replaces the NTAK09descr ibed in "NTAK091.5 Mb DTI/PRI
card" (page 859). This feature does not affect the NTAK09 functionality,
configuration, or maintenance in any way. Aside from changes to the
configuration and maintenance of the pack, there are no other changes
seen by the users, and call processing is not affected.
The NTRB21 (DTI/PRI/DCH) TMDI digital trunk card is a 1.5 Mb DTI or
PRI interface to the CS 1000 system. The NTRB21 card has a built-in
downloadable D-channel.
The TMDI feature introduces the software changes required for a CS 1000
system to support the new TDMI pack. The software changes include:
•the introduction of a new prompt to replace a function that washandled
by a dip switch on the NTAK09
•an extra loadware application to handle Layer 1
•a change to the existing loadware files into 32 bit format from the original
16 bit format
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright© 2003-2008, Nor tel Networks
.