Physical Description - Nortel Circuit Card Installation Manual

Page 786 of 906

Physical description

553-3001-211 Standard 3.00
NTBK51 Downloadable D-channel Handler daughterboard
— DCH interface
— layer 3 preprocessor
— traffic reporting including link capacity
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
• slots 1 through 4 in the MG 1000S. The card is not supported in the
MG 1000S Expansion
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 255.
Table 255
Faceplate LED
State
On (Red)
On (Green)
Off
August 2005
Definition
NTBK51 is disabled.
NTBK51 is enabled, but not necessarily
established.
NTBK51 is not equipped.