Nortel Communication Server 1000M, Руководство по установке и настройке

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Page 46 of 120 Installing ISDN BRI hardware
553-3001-218 Standard 2.00 September 2004
Connecting clock reference cables
Complete this procedure to connect the ISDN BRI clock reference cables to
the Clock Controller. There are three different cables that route clock signals
from the IPE back plane to the Clock Controller face plate (as shown in
Figure 11 on
page 47 ). Refer to Table 8.
Note: Measure the distance between the IPE and CE modules to ensure
that you order the correct cable lengths.
Procedure 12
Connecting clock reference cables
1 Search for available D-sub 9 connector slots on the I/O panels of the
selected IPE and CE I/O modules (if the I/O panel is equipped with
D-sub 9 connector slots). If none is available, look for an empty slot used
for 25-pair wire connectors (the cables contain two adapter plates to
convert a 25-wire slot to two D-sub 9 connector slots).
2 Connect the cables as shown in Figure 11; if choosing IPE slots 0, 4, 8,
or 12, remove the transmit and receive cable installed on pins 72 - 79 and
secure them to a proper place.
Table 8
ISDN BRI clock reference tables
Code Length (feet) Use
NTND70AA 1.5 Connects IPE back plane to
IPE I/O panel.
NTND71AA-AD 6.5, 12, 25, 42 Connects IPE I/O to CE I/O
panel.
NTND72AA 6.5 Connects CE I/O to Clock
Controller face plate.