Nortel Communication Server 1000S Installation And Configuration Manual page 351

Remove the daughterboards from the NTBK50
Use these guidelines to remove the NTAK20 and NTBK51 or NTAK93 from
the NTBK50 PRI card. Because of the physical layout of the mother and
daughterboards, the NTAK20 should be removed before the NTAK93 or
NTBK51.
1 Starting at the two corners opposite the connector, gently lift each corner
out of the locking groove of the standoff.
2 At the two corners adjacent to the connector, gently lift the entire side
until the mounting holes are clear of the locking groove of the standoff.
3 To remove the connector pins, grasp the edge of the board adjacent to the
connector and lift gently.
If more than one NTBK50 card is installed, the additional cards may not carry
daughterboards, depending on system configuration. At least one NTAK20
(per system) is always required.
Insert the NTBK50
Slide the circuit card into card slot 1-9 in the Small System main cabinet, or
in slots 11-19, 21-29, 31-39, 41-49 of the first, second, third, and fourth IP
expansion cabinets, respectively.
For CS 1000S, it is installed in slots 11-14, 21-24, 31-34, 41-44 of the first,
second, third and fourth MG 1000S, respectively.
Note: For CS 1000S, physical card slots are numbered 1-4 on the first,
second, third and fourth MG 1000S.
Secure the circuit card in the cabinet by locking the lock latch assemblies. The
card number associated with a 2.0 Mb PRI card is based on the slot in which
the card is installed.
2.0 Mb PRI implementation
ISDN Primary Rate Interface
Page 351 of 394
Installation and Configuration