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APPENDIX C. S REGISTERS
ACTIVE Professional External Modem User’s Manual
26
The symbol * means register value may be stored in one of the two user
profiles with the AT&Wn command. Register parameter ranges from 0 -
255 unless specified.
APPENDIX C. S REGISTERS
Your ACTIVE modem has a number of S registers that affect various operation
characteristics, let you obtain information about your modem, and let you test and
configure your modem. Most of the registers have default values, which you can
display or change to fit your particular requirement.
S0 * Number of rings till auto-answer Default : 2
Establishes the number of rings required before the modem answers
incoming calls. Setting this register to 0 disables auto-answer mode.
S1 Ring counter Default : 0
Number of rings which the modem detects before it answers a call. If no
rings occur over an 8 second interval, this register is cleared.
S2 * Escape character Default : 43
S2 holds the decimal value of the ASCII character used as the escape
character. The default value corresponds to an ASCII '+'. A value over
127 disables the escape process, i.e., no escape character will be
recognized.
S3 Carriage return character (Range:0-127) Default : 13
Sets the command line and result code terminator character. Pertains to
asynchronous operation only.
S4 Line feed character (Range:0-127) Default : 10
Sets the character recognized as a line feed. Pertains to asynchronous
operation only. The line feed control character is output after the
carriage return control character if verbose result codes are used.
S5 Backspace character (Range:0-32) Default : 8
Sets the character recognized as a backspace. Pertains to asynchronous
operation only. The modem will not recognize the backspace character
if it is set to a value that is greater than 32. This character can be used to
edit a command line. When the echo command is enabled, the modem
echoes back to the local DTE the backspace character, an ASCII space
character and a second backspace character; this means a total of three
characters are transmitted each time the modem processes the
backspace character.