Cisco Systems 1500 manual Data Rate Transparent Front Panel LEDs, WCMs with Fixed Clock Recovery

Chapter 1 Product Overview

System Modules

Data Rate Transparent Front Panel LEDs

The WCM LEDs provide information about its operating status. Table 1-3 describes the LEDs.

Table 1-3 Transparent WCM LED Descriptions

Label	Color1	Description
On/Err	Green	Power is on. No software or hardware errors are detected.
	Red	A hardware or software error was detected or the
		initialization is in progress (during system startup only).
	Red	WCM is in manual setting mode (not shown in case of
	blinking	error).
Loop	Orange	A remote and/or a local loop is established.
L/R	Green	Data is received from the local port.
L/T	Green	Data is transmitted to the local port.
R/R	Green	Data is received from the remote end of the link.
R/T	Green	Data is transmitted to the remote end of the link.
	Green	WCM is in ALS mode; LED blinks once every 10 seconds.
	blinking

1. Any other state than the ones listed indicates a possible failure in the local system.

WCMs with Fixed Clock Recovery

The following transparent WCMs are available with fixed clock recovery:

•High-speed transparent WCM that supports data rates of 622 Mbps

•High-speed transparent WCM with 1062-Mbps clock for coupling link

•WCM that supports 2.488 Gbps

•WCM with 850-nm multiclock

Note WCMs with settable clock recovery are also available. See the “WCMs with Settable Clock Recovery” section on page 1-20.

	Cisco Metro 1500 Series Hardware Installation Guide
1-18	78-10588-03