Datasheet

Connecting Cisco CEoIP Network Modules to the Network
Connecting 4-Port T1/E1 RJ-48 Interface Network Modules (NM-CEM-4TE1) to the Network
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Connecting Cisco CEoIP Network Modules to the Network
Figure 6 4-Port T1/E1 RJ-48 Interface Network Module (NM-CEM-4TE1) LEDs
Connecting 4-Port T1/E1 RJ-48 Interface Network Modules
(NM-CEM-4TE1) to the Network
The 4-port T1/E1 RJ-48 interface network module (NM-CEM-4TE1) uses a RJ-48 straight-through cable
to connect to the customer premises equipment (CPE) for use in T1 or E1 circuit emulation. (See
Figure 7.)
Note All four ports on the network module must operate in the same software-configured mode, either as T1
ports or as E1 ports. The NM-CEM-4TE1 network module does not support combinations of T1 and E1
ports on the same network module.
When configured for E1 operation, the NM-CEM-4TE1 network module provides four 120-ohm
balanced ports. To connect any of these ports to a 75-ohm unbalanced network, use Cisco cable
CAB-ADP-75-120. For more information, see the Installing the 75-120-Ohm Adapter Cable on E1
Multichannel Port Adapters document:
http://www.cisco.com/en/US/docs/interfaces_modules/port_adapters/install_upgrade/cables_and_atten
uator/75-120ohm_cbl_e1_multichan_install/6728cabl.html
Table 5 4-Port T1/E1 RJ-48 Interface Network Module (NM-CEM-4TE1) LEDs
LED Color Meaning
AL Yellow Loss of signal or loss of frame has occurred, or the network module is
unavailable because of excessive errors on the interface.
LP Yellow A local or network loopback on the port.
CD Green Activity is occurring on the interface (carrier detect).
EN Green The network module has passed self-test and is available to the router.
AL Yellow Not used.
88921
AL
EN
Alarm, loopback,
carrier LEDs
Alarm
Enable
NM-CEM-4TE1
T1/E1 3 T1/E1 2 T1/E1 1 T1/E1 0
See Manual before installation