Cisco 3845 Hardware Installation Guide - Page 299
-Port T1/E1 RJ-48 Interface Network Modules (NM-CEM-4TE1)
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Chapter 27 Connecting Circuit Emulation Over IP Network Modules 4-Port T1/E1 RJ-48 Interface Network Modules (NM-CEM-4TE1) 4-Port T1/E1 RJ-48 Interface Network Modules (NM-CEM-4TE1) The 4-port T1/E1 RJ-48 interface network module (NM-CEM-4TE1) is a single-wide CEoIP network module with four T1/E1 ports. (See Figure 27-2.) The NM-CEM-4TE1 connects to any T1/E1 interface for voice or data. 4-Port T1/E1 RJ-48 Interface Network Module (NM-CEM-4TE1) LEDs See Figure 27-6 for the location of network module LEDs and Table 27-5 for LED descriptions. Figure 27-6 4-Port T1/E1 RJ-48 Interface Network Module (NM-CEM-4TE1) LEDs 88921 NM-CEM-4TE1 See Manual before installation T1/E1 3 T1/E1 2 T1/E1 1 T1/E1 0 AL EN Alarm, loopback, carrier LEDs Alarm Enable Table 27-5 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. 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 27-7.) 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. OL-2485-20 Cisco Network Modules Hardware Installation Guide 27-9
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