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Connecting Cisco ISDN PRI Network Modules to the Network
Channelized T1/ISDN PRI Network Modules
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Connecting Cisco ISDN PRI Network Modules to the Network
Figure 4 Connecting a Channelized T1/E1 PRI Network Module with G.703 to a Networking
Device
Channelized T1/ISDN PRI Network Modules
This section provides information about the following network modules for Cisco modular routers:
• 1-port channelized T1/ISDN PRI network module (NM-1CT1 or CPANM-1CT1) (see Figure 5).
This module is also referred to as the 1-port CT1/PRI network module.
• 2-port channelized T1/ISDN PRI network module (NM-2CT1 or CPANM-2CT1) (see Figure 6).
This module is also referred to as the 2-port CT1/PRI network module.
Figure 5 1-Port Channelized T1/ISDN PRI Network Module
Figure 6 2-Port Channelized T1/ISDN PRI Network Module
Connecting CT1/PRI Modules to the Network
To connect a CT1/PRI module to the network, use a DB-15-to-DB-15 T1 serial cable to connect the
CT1/PRI port to a T1 channel service unit (CSU). (See Figure 7.) These ports are color-coded tan.
RX
MON
NM-1CE1T1-PRI
EN
AIM
TX
MON
CD
LP
RA
LAC0
CTLR 0
T1
E1-BAL
E1-UNBAL
88639
LOOPBACK
CTRLR 0
EN
cT1
PRI
H7460
LOCAL
ALARM
REMOTE
ALARM
CARRIER
DETECT
CT1/PRI-U port (DB-15)
LOOPBACK
CTRLR 0
EN
cT1
PRI
H7461
LOCAL
ALARM
REMOTE
ALARM
CARRIER
DETECT
LOOPBACK
CTRLR 1
EN
LOCAL
ALARM
REMOTE
ALARM
CARRIER
DETECT
CT1/PRI-U ports (DB-15)