Functional description – Nortel Networks 1000 User Manual
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NTBK51 Downloadable D-channel Handler daughterboard
The NTBK51 daughterboard, when installed on the NTAK09 digital trunk
card, is addressed in the same slot as the NTAK09.
One NTBK51 daughterboard is required for each PRI link.
LEDs are located on the faceplate of the NTAK09/NTBK50 card. The
DCHI LED is a dual-color (red/green). The LED is described in
.
Table 385
Faceplate LED
State
Definition
On (Red)
NTBK51 is disabled.
On (Green)
NTBK51 is enabled, but not necessarily established.
Off
NTBK51 is not equipped.
Functional description
The main functional blocks of the NTBK51 architecture include the
following:
•
Microprocessors
•
Main memory
•
Shared memory
•
EPROM memory
•
Flash EPROM memory
•
EEPROM memory
•
Serial communication controller
•
Sanity timer
•
Bus timer
The main functional blocks of the NTBK51 architecture include the
following:
•
Microprocessors
•
Main memory
•
Shared memory
•
EPROM memory
•
Flash EPROM memory
•
EEPROM memory
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311
02.06
Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.