Table 5-25. Mx2820 Clock State; Table 5-26. Clock Alarm Conditions; Clock State; Card Pair State - ADTRAN MX2820 System Manual

Clock State

This field indicates the current state of the Clock synchronization circuitry.
provides the possible conditions.
State
Reset
Norm
Hold-over
Exit Hold-over
Exit Hold-over Fast
Fast

Card Pair State

Alarm

This field displays the current alarm condition for the Clock Module Pair State.
lists the possible alarm conditions.
Alarm (Condition)
None
Excessive Switches
Switched to Protect
61186003L1-1D

Table 5-25. MX2820 Clock State

Description
The clock synchronization circuitry is being initialized.
The clock synchronization circuitry is synchronized to the indicated
external clock reference.
The clock circuitry is locked and no longer tracking the external clock
reference.
A valid clock source is available and the clock sync circuitry is in the
process of synchronizing to it.
The clock source went out of valid range and the sync circuitry is
attempting to re-synchronize.
A clock signal is available, but is out of valid range.

Table 5-26. Clock Alarm Conditions

Description
This condition indicates that there are no clock state alarms.
This condition indicates the maximum switching threshold has been
exceeded.
This condition indicates a module switch has occurred.
Section 5, User Interface Guide - UIG-510, Status
Table 5-25
Table 5-26
5-35