ADTRAN 1200212L1, Руководство пользователя

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Chapter 8. Dial Backup Configuration
8-4 DSU IQ User Manual 61200212L1-1
Auto DBU
The A
UTOMATIC
DBU option specifies whether the unit
automatically enters dial backup mode or waits for manual setup.
The factory default setting is
D
ISABLE
.
DBU Options
Answer Always
If this feature is enabled, the unit will answer a call. If disabled, it
will not answer a call. However, the
A
NSWER
A
LWAYS
option must
work in conjunction with the A
UTO
DBU and O
RIGINATE
/A
NSWER
options. The A
UTO
DBU option is the controlling option and if it is
disabled, the unit will not answer the call regardless of how A
NSWER
A
LWAYS
is set, except for the DTE DBU which will answer the call
regardless of the A
UTO
DBU setting. The O
RIGINATE
/A
NSWER
feature only appears when the unit is programmed for a nonframe-
relay circuit (signaling none). If both
A
NSWER
A
LWAYS
and A
UTO
DBU are enabled, the unit will answer the call even if it is set to
O
RIGINATE
.
Beeper Enable
If enabled, the DSU IQ issues an intermittent beep while in dial
backup.
Password Enable (PASSWRD ENABLE)
When enabled, the passwords entered in the DBU
P
ASSWORD
fields
of both the near and far end DSU IQs are required to match before a
dial backup connection can be made. The setting in this field must
also be identical in both units (i.e., they both must be set to either
E
NABLED
or
D
ISABLED
).
DBU Password
Enter the authentication string used for making a dial backup
connection. The near and far end DSU IQ DBU passwords must be
Dial backup is only supported when the unit is operated in point-to-point
mode.