Troubleshooting guide

Section 7, User Interface Guide - DLP-744, Provision Clock Module Protection
61186003L1-1D 7-175
6. From the Clock Provisioning Menu screen, select PROTECTION and press ENTER.
Figure 7-69 shows the Protection Provisioning menu.
Figure 7-69. Protection Provisioning Menu
7. From the Protection Provisioning menu, select PERFORM MANUAL SWITCH.
Input the letter Y to perform manual protection switch, or input the letter N to escape
without performing a manual protection switch, and press
ENTER.
8. From the Protection Provisioning menu, select PERFORM MANUAL SWITCH FROM PRIMARY
R
EFERENCE.
This allows the reference to be switched from Primary to Secondary (and back).
• The Primary reference is the CLKA input.
• The Secondary reference is the CLKB input.
Input the letter Y to perform manual protection switch of the reference timing, or input the
letter
N to escape without performing a manual protection switch, and press ENTER.
9. From the Protection Provisioning menu, select MINIMUM SWITCHING PERIOD.
This parameter determines the number of seconds that must pass before another module
switch is allowed. The default is 10 seconds. Input a value from 0 to 3600 to set the
Minimum Switch Period (in seconds), and press
ENTER.
10. From the Protection Provisioning menu, select MAXIMUM SWITCH THRESHOLD.
This parameter determines the number of times per hour the module is allowed to switch
between CLK modules. If in an hour, the modules switch more than the Maximum Switch
Threshold allows, the module issues a trap and stops switching modules for the next 24
hours. The default setting is three times per hour. Input a value from 1 to 24 to set the
Maximum Switch Threshold, and press
ENTER.
Shelf: 1 Slot: CLK A ADTRAN MX2820 System 03/22/05 11:46
Unacknowledged Alarms: NONE TID: HTVLALEXD16
Protection Provisioning
1 - Perform Manual Card Switch
2 - Perform Manual Switch From Secondary Reference
3 - Automatic Clock Card Switch : Enable
4 - Automatic Clock Reference Switch : Enable
5 - Minimum Switching Period (sec.) : 10
6 - Maximum Switch Threshold : 3
7 - Clear Number of Switches : 0
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