APPENDIX C. S REGISTERS

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.

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.

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.

ACTIVE Professional External Modem User’s Manual

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