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12 1-Port and 2-Port ISDN-PRI Network Module Configuration Note
PRI Module Pinouts
Table 1
Straight-Through T1 Cable Pinout
Table 2
Null-Modem T1 Cable Pinout
CT1/PRI-CSU Pinout
Table 3 lists the pinout for the CT1/PRI-CSU network module.
Table 3
CT1/PRI-CSU Network Module (RJ-48C Port) Pinout
CE1/PRI Pinouts
Cisco Systems offers three serial cables for 120-ohm balanced CE1/PRI-B network modules and one
serial cable for 75-ohm unbalanced CE1/PRI-U network modules. All four E1 cables have a DB-15
connector at the router end. Cables for CE1/PRI-B modules have either DB-15, Twinax, or RJ-45
connectors at the network end. (See Figure 15, Figure 16, and Figure 17.) The cable for CE1/PRI-U
modules has a BNC connector at the network end. (See Figure 18.)
DB-15 Connector
DB-15 Connector
Signal
Pin
Pin
Signal
Transmit Tip
1
1
Transmit Tip
Transmit Ring
9
9
Transmit Ring
Receive Tip
3
3
Receive Tip
Receive Ring
11
11
Receive Ring
DB-15 Connector
DB-15 Connector
Signal
Pin
Pin
Signal
Transmit Tip
1
3
Receive Tip
Receive Tip
3
1
Transmit Tip
Transmit Ring
9
11
Receive Ring
Receive Ring
11
9
Transmit Ring
RJ-48C Pin
Signal
1
Receive Ring
2
Receive Tip
4
Ring
5
Tip