8 1-Port and 2-Port ISDN-PRI Network Module Configuration Note
Connecting the PRI Module to the Network
The following warning applies to routers that use a DC power supply:
Warning
After wiring the DC power supply, remove the tape from the circuit breaker switch handle
and reinstate power by moving the handle of the circuit breaker to the ON position. (To see translated
versions of this warning, refer to the Regulatory Compliance and Safety Information document that
accompanied the router.)
Blank Network Module Panels
If the router is configured with fewer than four network modules, make sure that blank panels fill the
open chassis slots to provide proper airflow. (See Figure 7.)
Figure 7
Blank Network Module Panel
Connecting the PRI Module to the Network
This section explains how to connect a PRI network module to a WAN.
CT1/PRI Modules
To connect a CT1/PRI module, use a DB-15-to-DB-15 T1 serial cable to connect the CT1/PRI port
to a T1 CSU. (See Figure 8.)
Figure 8
Connecting a CT1/PRI Module to a T1 CSU
H6552
LOOPBACK
CTRLR 0
EN
cT1
PRI
H7468
LOCAL
ALARM
REMOTE
ALARM
CARRIER
DETECT
CT1/PRI port (DB-15)
CT1/PRI port (DB-15)
T1 serial
cable
T1 CSU
