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Cisco Network Modules Hardware Installation Guide
OL-2485-20
Chapter 7 Connecting ISDN PRI Network Modules
Channelized E1/ISDN PRI Balanced (120-Ohm) Network Modules
Channelized E1/ISDN PRI Balanced (120-Ohm) Network
Modules
This section provides information about the following network modules for Cisco modular routers:
•
1-port channelized E1/ISDN PRI balanced (120-ohm) network module (NM-1CE1B or
CPANM-1CE1B) (see
Figure 7-11
). This module is also referred to as the
1-port CE1/PRI-B
network module
.
•
2-port channelized E1/ISDN PRI balanced (120-ohm) network module (NM-2CE1B or
CPANM-2CE1B) (see
Figure 7-12
). This module is also referred to as the
2-port CE1/PRI-B
network module
.
Figure 7-11 1-Port Channelized E1/ISDN PRI Network Module (Balanced)
Figure 7-12 2-Port Channelized E1/ISDN PRI Network Module (Balanced)
CE1/PRI modules are available with one or two E1 ports and with balanced or unbalanced interfaces.
These modules receive and transmit data bidirectionally at the E1 rate of 2.048 Mbps, and provide up to
30 virtual channels per E1 port. Each channel can be configured individually as a serial interface.
LOOPBACK
CTRLR 0
EN
cE1-B
PRI
H7260
LOCAL
ALARM
REMOTE
ALARM
CARRIER
DETECT
CE1/PRI-B port
LOOPBACK
CTRLR 0
EN
cE1-B
PRI
H7261
LOCAL
ALARM
REMOTE
ALARM
CARRIER
DETECT
LOOPBACK
CTRLR 1
LOCAL
ALARM
REMOTE
ALARM
CARRIER
DETECT
CE1/PRI-B ports