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Chapter 8. Configuring DBU Options
8-4 TSU IQ+ User Manual 61200275L1-1
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 AUTO
DBU setting. The O
RIGINATE
/A
NSWER
feature only appears when the unit is programmed for a nonframe-
relay circuit (signaling none). If both ANSWER
A
LWAYS
and A
UTO
DBU are enabled, the unit will answer the call even if it is set to
O
RIGINATE
.
Beeper Option
If enabled, the TSU IQ+ issues an intermittent beep while in dial
backup. Choices are D
ISABLE
or E
NABLE
.
Password Opt
When enabled, the passwords entered in the DBU P
ASSWORD
fields
of both the near and far end TSU IQ+s 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
). This field is not available when the
PRI DBU card is installed.
DBU Password
Enter the authentication string used for making a dial backup
connection. The near and far end TSU IQ+ DBU passwords must
Dial backup is only supported when the unit is operated in point-to-
point mode.