Chapter 8. Configuring DBU Options

be identical. If using front panel entry, see the section Entering Letters Using the Front Panel on page 9-6 in the chapter System Configuration for more information. This field is not available when the PRI DBU card is installed.

Daily Lockout

Enable/disable the daily lockout specified by the fields LOCKOUT

START and LOCKOUT END.

Lockout Start

Enter the hour that the daily lockout begins and dial backup is disabled. This setting only applies if the DAILY LOCKOUT parameter is enabled. Choices are 0 to 23.

Lockout End

Enter the hour that the daily lockout ends and dial backup is reactivated (0 to 23). This setting only applies if the DAILY LOCKOUT parameter is enabled.

Weekend Lock

If enabled, no backup will occur from midnight Friday to midnight Sunday.

DBU CRITERIA

With Network Failure (WITH NET FAIL)

When enabled, the TSU IQ+ enters backup mode when network failure is detected. The factory default setting is ENABLE.

With No LMI

When enabled, the TSU IQ+ enters backup mode when a loss of signaling from the frame relay switch is detected. The default setting is ENABLE.

With PVC Inactive

This option works in conjunction with the DBU ON INACTIVE option in the PVC configuration table. The WITH PVC INACTIVE option acts as a master switch for auto DBU operation based on the PVC state. If this option is set to ENABLED, then each DBU ON INACTIVE option applies. If this option is set to DISABLE, then each DBU ON INACTIVE option is disabled. See DBU on Inactive on page 7-7.

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ADTRAN 1204002L2, TSU IQ+ user manual DBU Criteria