ADTRAN DSU IV ESP, User Manual

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Chapter 9. Configuring Dial Options
9-4 DSU IV ESP User Manual 61204011L1-1
SW56 Auto Answer
The SW56 Auto Answer option is used to specify how incoming
calls are to be answered. If
E
NABLED
, incoming calls are
automatically answered by the DSU IV. If D
ISABLED
, an incoming
call can be answered manually, by an AT or V.25 command from the
DTE, or by raising TR from the DTE.
DBU Options
The DBU Options are used to select the modes of operation for the
Dial Backup features. There are ten standard options available with
additional options for specific backup services.
Table 9-2 lists the DBU options and their AT commands for all
models.
Table 9-2. DBU Options AT Commands for All Models
Front
Panel
AT
Command
Description
Automatic DBU
1 = Disabled _K0 Automatic DBU disabled
2 = Enabled _K1 Automatic DBU enabled
Number to Dial
1 = DBU with #1 _B0 Dial stored #1
2 = DBU with #2 _B1 Dial stored #2
Originate/Answer
1 = DBU originate _E0 Originates call if DDS fails
2 = DBU answer _E1 Answers call if DDS fails
DBU Criteria
When Out of Service
1= Disabled _G0 No DBU for OOS
2 = Enabled _G1 DBU when OOS