Nortel Passport 15000 Hardware Installation And Maintenance page 389

2 At the alarm/BITS module, plug the female D-sub connector of the timing
wire labeled reference B into the connector beside the label J3. See the
figure "Location of the alarm/BITS module and cable connections in a
Passport 15000" (page 390) or "Location of the alarm/BITS module and
cable connections in a Passport 20000" (page 391).
If the alarm/BITS module on a Passport 15000 is either an NTHR12 or
NTHR13, it has factory-installed inline EMI filters attached to the J3 and
J4 connectors as shown in the figure "An EMI filter on an alarm/BITS
connector of a Passport 15000" (page 392). If the EMI filters are missing,
add them as described in "Installing EMI filters on the alarm/BITS module"
(page 599).
3 Fasten the 2 small slotted screws of the D-sub connector to the
alarm/BITS module.
4 For a Passport 15000 or 20000 using the redundant timing setup, plug the
female D-sub connector of the timing wire labeled reference A into the
connector beside the label J4.
5 Fasten the 2 small slotted screws of the other D-sub connector to the
alarm/BITS module.
The operation of the timing signals inside the switch hardware will be verified
when the network synchronization is configured and the timing tests pass.
Passport 15000, 20000 Hardware Installation, Maintenance, and Upgrade
Chapter 17 Hardware procedures 389
5.2S2