ADTRAN 1200212L1, Руководство пользователя

Страница: 96 / 172

Chapter 8. Dial Backup Configuration
8-6 DSU IQ User Manual 61200212L1-1
as a master switch for A
UTO
DBU operation based on the PVC state.
If this option is set to E
NABLED
, then each DBU
ON
I
NACTIVE
option
applies. If this option is set to D
ISABLE
, then each DBU
ON
I
NACTIVE
option is disabled. See DBU on Inactive on page 7-7.
DBU Timers
Fail Timer (FAIL TMR)
This option sets the amount of time the dedicated circuit failure
condition must be active before the DSU 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 DDS circuit is down, the DSU IQ remains in backup until
the DDS 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 DDS must be restored manually. The factory default
setting is 1 minute.
Redial Counter
This option sets the number of times the DSU 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 DSU 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 R
EDIAL
C
OUNTER
. 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.
DBU CARD CONFIGURATION OPTIONS
The following selections are dependent upon the type of DBU card
installed (if any). If no card is installed or if the 4-Wire SW56 card is
installed, then the selections in this section do not appear.