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Cisco Network Modules Hardware Installation Guide
OL-2485-20
Chapter 7 Connecting ISDN PRI Network Modules
Channelized T1/ISDN PRI Network Modules
Caution
To comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety,
connect the 1-port T1/E1 channelized PRI network modules with G.703 (NM-1CE1T1-PRI) and 2-port
T1/E1 channelized PRI network modules with G.703 (NM-2CE1T1-PRI) only to intrabuilding or
nonexposed wiring or cabling. The intrabuilding cable must be shielded and the shield must be grounded
at both ends.
Figure 7-4
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 7-5
).
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 7-6
).
This module is also referred to as the
2-port CT1/PRI network module
.
Figure 7-5
1-Port Channelized T1/ISDN PRI Network Module
RX
MON
NM-1CE1T1-PRI
EN
AIM
TX
MON
CD
LP
RA
LA
C0
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)