Cisco 3825 Hardware Installation Guide - Page 255

Chapter 20 Connecting T3/E3 Network Modules T3/E3 Network Module LEDs Tip When connecting the T3/E3 network module to a port adapter used in another router series, verify that you are connecting the TX port on the network module with the RX port on the port adapter, and the TX port on the port adapter to the RX port on the network module. T3/E3 Network Module LEDs All network modules have an enable (EN) LED. This LED indicates that the module has passed its self-tests and is available to the router. See Figure 20-3 and Table 20-1 for LEDs on the T3/E3 network module. Figure 20-3 T3/E3 LEDs NM-1T3/E3 SEE MANUAL BEFORE INSTALLING NETWORK MODULE T3/E3 TX RX CD LP AIS FERF/RAI AL EN 72537 CD FERF/RAI LED LED LP AIS LED LED AL EN LED LED Table 20-1 T3/E3 Network Module LEDs LED CD LP AIS FERF/RAI AL EN Meaning Green indicates that a signal is present on the port. Yellow indicates that a loopback condition is present on the port. Yellow indicates an alarm on the DS3 transmission. Yellow indicates a remote failure at the far end of the connection. Yellow indicates that the port is out of frame. Green indicates that the network module has passed self-test and is available to the router. Related Documents For additional information, see the following documents. Tip For information on obtaining documentation, see the "Obtaining Documentation" section on page viii. For information on obtaining technical assistance, see the "Obtaining Technical Assistance" section on page xi. OL-2485-20 Cisco Network Modules Hardware Installation Guide 20-3