Nortel Meridian 1 Manual page 847

50 Connect the single connector end of the NT7D89 RS-232 cable to
backplane connector position 14D (refer to Figure 12-15 on page 12-62).
51 Connect port A (DTE) to J21 of the left I/O panel.
52 Connect port B (DCE) to J25 of the left I/O panel.
53 At the rear of each Core/Net module, connect an NT7D90 Ethernet Cable
from backplane connector position 17F to J28 on the I/O panel.
54 Loosely attach the I/O panel to the module (later in the upgrade you will
need to remove the panel to install core to core cables), using the screws
from the former panel.
55 Seat the 3PE card. Set the ENB/DIS switch to ENB.
56 Set the ENB/DIS switch on the clock controller card to DIS. Seat the
clock controller card; leave the ENB/DIS switch set to DIS and do not
connect the faceplate cables.
57 Turn on power to the Core 0 module. For AC-powered systems, set the
main circuit breaker to ON (up position) in the rear of the pedestal. For
DC-powered systems, set the breaker to ON (up position) in the pedestal;
then, set the switch to ON (up position) on the power supply in the
module.
58 Perform the appropriate steps to connect the clock controller cables
(refer to Figure 12-16 on page 12-64):
• For a QPC471 card, connect the NT8D79 cables from the primary
and secondary references to the faceplate of the clock controller
card. Then connect the NT8D74 cable from the NT8D36 InterGroup
Module to the clock controller card.
• For QPC775 Clock Controller Cards, connect the NT8D74 cable
from the junctor board to the faceplate of the clock controller card.
Then connect the NT8D79 cables from the primary and secondary
references to the faceplate of the clock controller card.
• Leave the ENB/DIS switch set to DIS on QPC471 and QPC775
cards.
Upgrade system installation Upgrading to Meridian 1 system options
Upgrades to Meridian 1 option 81 12-83