ADTRAN DSU IV ESP, User Manual

Page: 71 / 194

Chapter 7. Configuring DTE Options
61204011L1-1 DSU IV ESP User Manual 7-5
DTE Rate
The DSU IV allows subrate looprates. If a DTE rate higher than the
current loop rate is selected, the DTE rate automatically sets to
match the slower loop rate; the DSU IV ESP briefly displays
DTE
R
ATE
S
AME
A
S
T
HE
N
ETWORK
before returning to the status screen.
The factory default setting is S
AME
A
S
L
OOP
.
If the DSU IV ESP is set for a loop rate of 64 kbps, then scrambler
on/off options are available. The factory default setting is
S
CRAMBLER
O
FF
.
SR Options
1 = Forced On &S0_C1 Always on
2 = Off OOS only &S1_C1 Off when network out of service
3 = Off LOCD Only &S3 Off 5 sec after disconnect (SW56 only)
4 = Off Test only &S0_C0 Off for test only
5 = Off test + OOS &S1_C0 Off for test and OOS
6 = Off test + LOCD &S5 Off 5 seconds after disconnect or test
Table 7-1. DTE Options AT Commands (Continued)
Front
Panel
AT
Command
Description
For IDLE WHEN OFF option: In SW56 mode, TR off causes the DSU
to go On Hook (Idle). The unit does not dial out if TR is off. In dedicated
mode, the DSU goes into DTE command mode when TR goes off. When
TR goes on, if the DSU does not receive a command in the number of sec-
onds set in S40, the DSU goes into data mode.
For 64 kbps clear channel operation, the DTE data sequences might mim-
ic network loop maintenance functions and erroneously cause other net-
work elements to activate loopbacks. To prevent this, the
S
CRAMBLER
O
N
option should be selected for both the local and remote DSU IV ESP.