Specifications

On-Line Operation
6-21
• Regained Communication - generated by the central DAP in a multidrop network
when communication is regained with a remote unit for longer than the amount
of time selected in the Parameter Threshold submenu. This alarm is only
available when the service is set for DDSNI and the Automatic Poll parameter is
disabled.
• Diagnostics Started - generated when the secondary channel has been activated to
communicate with a far-end unit. This alarm is only available when the service
is set for DDS. It is not stored in the alarm buffer.
• Diagnostics Stopped - generated when the secondary channel has stopped and
main channel data will resume. This alarm is only available when the service is
set for DDS. It is not stored in the alarm buffer.
• Unit Dropped - generated by the central DAP in a multidrop network when
communication is lost with a remote unit. This alarm is only available when the
service is set for DDSNI.
• Unit Added - generated by the central DAP in a multidrop network when
communication is initiated with a remote unit. This alarm is only available when
the service is set for DDSNI. It is not stored in the alarm buffer.
• Automatic Dial Backup Started - generated by the DAP when it originates or
answers a dial backup call either automatically or manually through the front
panel.
• Automatic Dial Backup Failed - generated by the DAP when it detects an
automatic dial attempt failure.
• Dial Backup Released - after the DAP switches data from the dial line to the
dedicated line, it disconnects the call and generates this alarm. This alarm is
generated only by the DAP that initiated the disconnect. The call will be
disconnected automatically after the amount of time selected when the Dedicated
Line Test parameter in the Dial Configuration submenu is set to DDS Up. If this
parameter is not set, the call must be disconnected manually through the DAP's
front panel.
• Dial Backup Failed - generated by the DAP if a previously established call fails.
This alarm will not be generated if the call was disconnected through the DAP's
front panel or by a condition selected under the Automatic Disconnect parameter
in the Dial Configuration submenu. The alarm will not be generated when
attempts to establish a dial backup connection fail.