Computer Hardware Installation Guide

990 NTBK51 Downloadable D-channel Handler daughterboard
LAPD- software for data link layer processing
DCH interface
Layer 3 preprocessor
traffic reporting including link capacity
The NTBK51 provides the following features and functions:
ISDN D-channel related protocol
Selftest
Loopback
D-channel loadware including:
management and maintenance
LAPD- software for data link layer processing
Meridian 1 DCH interface
Layer 3 preprocessor
traffic reporting including link capacity
The NTBK51 provides the following features and functions:
ISDN D-channel related protocol
Selftest
Loopback
D-channel loadware including:
management and maintenance
LAPD- software for data link layer processing
DCH interface
Layer 3 preprocessor
traffic reporting including link capacity
Physical description
The NTBK51 daughterboard interfaces with the system CPU and is
mounted on either the NTAK09 1.5 DTI/PRI card or the NTBK50 2 Mb PRI
digital trunk card.
You can install this card in:
slots 1 through 9 in the main cabinet or slots 11-19, 21-29, 31-39, or
41-49 in the expansion cabinets
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
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.