Clear To Send (Cs) Options; Table 7-3. Short & Long Delays At Different Operating Speeds - ADTRAN DSU IV ESP User Manual

Chapter 7. Configuring DTE Options
The E
applications. A DSU Tail Circuit cable interconnect diagram for this
application is shown in Figure E-1 on page E-2 in Appendix E.
The E
EIA-232 connector is used for 56 kbps and 64 kbps applications.
Using this option eliminates data errors caused by excessive delays
in the DTE transmit clock receiver and transmit data driver.
The I
connector is used for rates other than 56 kbps or 64 kbps.

Clear to Send (CS) Options

The C
lead. The default factory setting is F
S
If one of the options chosen involves R
the delay from RS to CS must be selected. Table 7-1 on page 7-3
shows the AT Commands used to set the CS options.
Specified times for the short and long delays at the different
operating speeds are shown in Table 7-3.
Table 7-3. Short & Long Delays at Different Operating Speeds
7-8
C
XTERNAL LOCK
C
XTERNAL LOCK
C option is recommended when the EIA-232
NVERT LOCK
O menu is used to select the control mode for the CS
S PTIONS
.
HORT
Rate
64
56
19.2
4.8
2.4
DSU IV ESP User Manual
option is normally used in modem tail circuit
option is also recommended when the
OLLOWS
EQUEST TO
Short Delay
1.1 ms
1.1 ms
1.5 ms
1.5 ms
1.5 ms
RS CS D
WITH ELAY
(RS), then
S
END
Long Delay
16.1 ms
16.1 ms
16.5 ms
16.5 ms
16.5 ms
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