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S-Register Format
S-Registers can be displayed and/or modified when the modem is in Command mode. To display
the value of an S-Register, issue the following command:
To modify the value of an S-Register, issue the following command:
In Table 14-3, the value for n is listed in the S-Register column, and the value for r is listed in the
Description column.
S-Register
S0
Auto-Answer Ring Number
modem will count before automatically answering a call.
Enter zero (0) if you do not want the modem to automatically answer
any calls. Otherwise, enter a value from 1–255 for the number of rings
to count before answering. The factory setting is 1.
S2
AT Escape Character. Register determines ASCII value used for
escape sequence to enter Command mode from Data mode.
Enter a value from 0 to 127 for the escape character. Any value
greater than 127 causes the modem to disable the escape sequence.
When the escape sequence is disabled, the modem cannot return to
Command mode until the call is disconnected. The factory setting is 43
(+ key).
S3
Carriage Return Character. Register determines ASCII value used as
the carriage return (Return key). This character is used to end
command lines and result codes.
Enter a value from 0 to 127 for the command end character. The
factory setting is 13 (carriage return key).
S4
Line Feed Character. Register determines ASCII value used as the
line feed character.
Enter a value from 0–127 for the line feed character. The factory
setting is 10 (ASCII carriage return or line feed).
1
The range of allowable values may be restricted in some countries.
3910-A2-GN32-40
TYPE:
ATSn?
Where:
n is the register number.
PRESS:
Enter
TYPE:
ATSn=r
Where:
n is the register number, and r is the new value.
PRESS:
Enter
Table 14-3
391x Series S-Registers
Description
1
. Register determines number of rings the
September 1998
(1 of 13)
AT Command Set and S-Registers
DCP LCD
Command
Sequence
Configure\Edit\
Line Dialer
Configure\Edit\
DTE Dialer
Configure\Edit\
DTE Dialer
Configure\Edit\
DTE Dialer
14-15
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