3Com T1/PRI manual Selecting option 1 from the main menu produces this screen

3-2CHAPTER 3: DUAL T1/PRI MAINTENANCE

Selecting option 1 from the main menu produces this screen:

Command

1 Reset to Highest Priority Timing Source

2 Reset PRI NAC

3Enter/Exit span-to-span pass-thru loopback mode

4Force Receiver Reframe on Span Line 1

5Disconnect Call on Span Line 1 B-CHANNEL(s)

6Force Receiver Reframe on Span Line 2

7Disconnect Call on Span Line 2 B-CHANNEL(s)

8Force TDM-Bus Mastership on Card

9Enter/Exit LoopBack Command on Span Line 1 10 Enter/Exit LoopBack Command on Span Line 2 11 Turn off Red Alarm LED on Span Lines

12 Connect/Disconnect B-Channel on Span Line 1

13 Connect/Disconnect B-Channel on Span Line 2

14 Change individual DS0 Service States on Span Line 1 15 Change individual DS0 Service States on Span Line 2 16 Change DS0 Service States for entire Span Line 1 17 Change DS0 Service States for entire Span Line 2

Enter menu selection and press Return or press Esc to exit.

Many of the Command Menu options have corresponding configurable parameters in other menus of the UI console. Issuing commands will not affect the configured parameters except at the time of initial execution.

Menu Option 1 Resetting the highest priority timing source

This action causes re-arbitration of the clock to the highest priority source available.

Menu Option 2 Resetting the PRI NAC

Issuing this command reboots the NAC.

Any configuration changes that are not saved to NVRAM will be lost when the NAC reboots.

Menu Option 3 Enter/Exit span-to-span pass-thru loopback mode

This option allows for a span-to-span loopback, where all of the DS0s on span 1 are connected to all of the DS0s on span 2 through the time slot interchanger (TSI). This command will drop calls.

This option is useful for testing purposes.

There will not be a prompt to authorize dropping calls if initiated from the command line interface (CLI).