1-28
APPENDIX D: S-REGISTERS
S-Registers, “ATSn=x”
Register Dec.
Function & Description
Default
S0=
0 - 255
Set the number of the rings required
before the modem automatically answers
a call. Set “S0=0” to disable auto-answer
mode
000
S1=
0 - 255
Count the incoming rings and store the
value to this register. The value of this
register is incremented with each ring. If
no rings occur over an 8 sec. interval,
this register is cleared. User can read but
should not change this value
000
S2=
0 - 255
S2 holds the decimal value of the ASCI
character used as the escape character.
The default value (043) corresponds to
an ASCII character “+”. A value of 128
to 255 disables the escape process, i.e.,
no escape character will be recognized
043
S3=
0 - 127
Hold the decimal value of the Carriag
Return <CR> character used as th
command line and result code terminator
Pertain to asynchronous operation only
013
S4=
0 - 127
Hold the decimal value of the character
recognized as a line feed. The line feed
control character is output after the
carriage return control character if
verbose result code are used.
010
S5=
0 - 32,
127
Hold the decimal value of the character
recognized as a backspace. The modem
will not recognize the backspace
character if this register is set to a value
greater than 32
008
S6=
Set the length of time, in seconds, that
the modem must wait (minimum 2
seconds even if the value is less than 2)
after going off-hook before dialing the
first digit of the telephone number
2 - 65
For international version
002
4 - 65
For Japanese version
004
S7=
Set the time, in seconds, that the
modem must wait before hanging up
because carrier is not detected
1 - 255
For international version
050
35 - 59
For Japanese version
050
S8=
0 - 65
Set the time, in seconds, that the
modem must pause when the “,” dial
002
