Ericsson LBI-39224 Wwvb Time Standard Configuration, Redundant Clock, Multisite Logout Polling

LBI-39224

devices to disable secondary drops. If the Multisite Channel Monitoring function is disabled, secondary drops will not be put on the GSC bus and the Network Manager will receive simulated secondary drops from the CAL.

Enable the Multisite Monitoring function by selecting (checking) the Multisite Monitor check box, unselect the check box to disable this function.

Multisite Logout Polling

If the Multisite Logout Polling function is enabled, prior to a timed logout timer expiration, a query will be transmitted to the unit about to be logged off of the system to verify that the unit is powered ON. If the unit is powered ON it will respond to the query and not be logged off; however, if the unit is OFF it will be logged off the system due to no response to the query.

Enable the Multisite Logout Polling function by selecting (checking) the Multisite Logout Polling check box, unselect the check box to disable this function.

3.21 WWVB TIME STANDARD CONFIGURATION

A coordinated universal time standard option is available that allows the CEC/IMC to be synchronized to WWVB in Fort Collins, Colorado. This option uses the Spectracom® Netclock/2™ WWVB receiver which interfaces to the CEC/IMC via a serial port at the CEC/IMC Manager (usually COM2). If the CEC/IMC is equipped with the WWVB option, the Netclock should be set up now.

Install, wire, and configure the hardware items as described in the Netclock documentation and Chapter 6. Special attention should be given to the section "Additional Considerations." When the Netclock/2 hardware has been installed and configured, install the Netclock/2 software on the CEC/IMC Manager according to the instructions in Chapter 6.

3.22 REDUNDANT CLOCK

Two identical but completely separate clock circuits—"A" and "B"—on each Clock Board provide redundant clocking capability for the CEC/IMC TDM bus circuits. Clock pulse outputs from both circuits are applied to the Audio Boards via the FUTUREBUS transceivers and

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