Nortel Networks Circuit Card 311 - Manual (Page 955)

Physical description 955
The NTAK93 daughterboard provides the following features and functions:
• D-channel interface or DPNSS interface
• Special features included for LAPD implementation at DCH:
— system parameters are service changeable (system parameters
are downloaded from software)
— incoming Layer 3 message validation procedures are implemented
in the D-PORT firmware
— supported message units and information elements can be service
changed
— translation of the CCITT message types information elements into a
proprietary coding scheme for faster CPU operation
— convention of IA5-encoded digits to BCD-encoded digits for incoming
Layer 3 messages for faster CPU operation
— self-test
— loopback
Physical description
The DCH function can be installed in the main and IP expansion cabinets.
The DTI/PRI card which carries a DCH daughterboard resides in the main
and IP expansion cabinets.
The DCH function can be located in the main and IP expansion cabinets.
The DTI/PRI card which carries a DCH daughterboard resides in the main
and IP expansion cabinets.
Faceplate LEDs
NTAK09 1.5 Mb PRI and NTBK50 2.0 MB PRI cards
LEDs are located on the faceplate of the NTAK09 and NTBK50 cards. The
DCHI LED is dual-color (red and green). The LEDs are described in
Table
399 "Faceplate LEDs" (page 955) .
Table 399
Faceplate LEDs
State Definition
On (Red) NTAK93 is equipped and disabled.
On (Green) NTAK93 is equipped and enabled, but not necessarily
established.
Off NTAK93 is not equipped.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
.