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G700 and Media Module LEDs
Issue 1 June 2005 299
Operational control
After successful initialization, the T1/E1 Media Module’s LEDs are controlled as follows:
● The Angel lights the YELLOW ACT LED when there is at least one non-idle trunk. If
Communication Manager sends a message to drive the clock sync signals, the YELLOW
ACT LED indicates this instead of the port busy/idle status.
● The Media Server may independently light and extinguish the three LEDs through
downlink LED Control messages, subject to the constraint that it may not turn off a
YELLOW ACT LED turned on by the Angel as a result of port activity.
● If the Media Module resets for any reason and is not released from reset, the RED ALM
LED lights and the YELLOW ACT and GREEN TST LEDs are held off.