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AT Commands and S-Registers
4-173821-A2-GB20-30 February 1998
Table 4-2
(2 of 10)
3821
Plus
S-Registers
S4 – Line Feed Character
Determines ASCII value used as the line feed character.
Enter a value from 0–127 for the line feed character.
Factory setting is 10 (ASCII line feed).
S5 – Backspace Character
Determines ASCII value used as the backspace (Backspace key). This character moves the cursor to the left and erases
the previous character.
Enter a value from 0–127.
Factory setting is 08 (ASCII backspace).
S6 – Blind Dial Pause
Determines how long (in seconds) the modem waits after going off-hook before dialing a telephone number if using result
code X0, X1, or X3.
Enter a value from 2–255 seconds.
The factory setting is 2 seconds.
NOTE: The default and permitted settings of this option are country-dependent. See Appendix H.
S7 – No Answer Timeout
Determines how long (in seconds) an originating modem waits before abandoning a call when no answer tone is
received.
Enter a value from 1–255 seconds.
The factory setting is 45 seconds.
NOTE: The default and permitted settings of this option are country-dependent. See Appendix H.
S8 – ‘‘,” Pause Time for the Dial Modifier
Determines how long (in seconds) the modem pauses when it encounters a comma (,) in the Dial command string.
Enter a value from 0–255 seconds.
The factory setting is 2 seconds.
NOTE: The default and permitted settings of this option are country-dependent. See Appendix H.
S10 – No Carrier Disconnect
Determines how long (in tenths of seconds) the modem allows the carrier signal to be Off before disconnecting the call.
Enter a value from 0–254 in 0.1 second increments. A value of 255 disables this register.
Factory setting is 20 (2 seconds).
NOTE: The default and permitted settings of this option are country-dependent. See Appendix H.
S12 – Escape Guard Time
Sets the value (in 20-millisecond increments) for the required pause before and after the escape sequence is issued. The
guard time prevents the modem from interpreting data as the escape sequence characters.
Enter a value from 0–255 in 20-millisecond increments. For example, the factory setting of 50 equals 1000 milliseconds or
one second. Factory setting is 50 (1 second).