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Cisco Metro 1500 Series Hardware Installation Guide
78-10588-03
Chapter 5 Connecting Optical Cables
Testing a Remote Link
should be on. If the modulated light does not match the clock-recovery frequency,
assuming a clock recovery is installed and enabled, the R/R LED will be red. The
remote receiver of the local system sees the signal and transfers it to the local
transmitter. The WCM in the local system should have the L/T, L/R, R/T, and R/R
LEDs on.
Note If your test results deviate from these results and you cannot correct
the problem, contact your Cisco service representative.