Chapter 8. Configuring DBU Options
DBU TIMERS
Fail Timer (FAIL TMR)
This option sets the amount of time the dedicated circuit failure condition must be active before the TSU IQ+ attempts backup. The value entered is multiplied by 10. The amount of time can be up to 990 seconds (i.e., an entry of 99). The factory default setting is 10 seconds (an entry of 1).
Restore Timer (RESTORE TMR)
Once the T1 circuit is down, the TSU IQ+ remains in backup until the T1 circuit is active for the length of time specified for the restore timer. The selection is entered in minutes (up to 255). If set to 0, the line must be restored manually. The factory default setting is 1 minute.
Redial Counter
This option sets the number of times the TSU IQ+ redials the far end when entering backup mode. The redial count, which is manually entered, can be up to a maximum of 99 attempts. If the TSU IQ+ encounters a busy or reorder, it attempts to establish the call the specified number of times. The factory default setting is 5.
Wait to Redial (REDIAL DELAY)
This option works in conjunction with the preceding REDIAL
COUNTER. It selects the amount of time between redial attempts to connect the backup line. The amount of time, which is manually entered, can be up to 99 seconds. The factory default setting is 15 seconds.
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