ADTRAN 1200063L1, Manual

Page: 95 / 137

Chapter 9. Configuring Dial Options
61200063L1-20 DSU III TDM User Manual 9-5
No Sealing Current
When enabled, the DSU III TDM enters backup mode when a loss of seal-
ing current is detected. The factory default setting is
E
NABLE
.
When all 1s/0s
When this option is enabled, the DSU III TDM monitors the receive data
for strings of 1s or 0s that are longer than the
F
AIL
T
IMER
. If this condition
is detected, the local DSU III TDM initiates a handshake routine with the
remote unit to determine if the DTE is generating the constant data pattern
or if the network has failed.
Auto Restore
Once the DDS circuit is restored, the DSU III TDM remains in backup until
the DDS circuit is active for the length of time specified for the
R
ESTORE
T
IMER
. The selection is entered in minutes (up to 255). If set to 0, the DDS
must be restored manually. The factory default setting is 1 minute.
Redial Counter
This option sets the number of times the originate unit attempts to redial
the answer unit if a busy or reorder is encountered while trying to estab-
lish dial backup. The redial count, which is manually entered, has a max-
imum of 99 attempts. The factory default setting is
5 .
.
Fail Timer
This option sets the amount of time the dedicated circuit failure condition
must be active before the DSU III TDM attempts backup. The maximum
time, which is manually entered, is 99 seconds. The factory default setting
is 3 seconds.
RESTORE TIMER
(0=OFF) __ __ MIN
ENTER REDIAL
COUNT: __ __
AUTO DBU FAIL
TIME: __ __ SEC