S1 Ring counter
This register is read only. The value of S1 is incremented with each ring. If no ring occurs over a
Range:
Default: 0
Units: rings
S2 AT escape character (user defined)
This register determines the ASCII values used for an escape sequence. The default is the + character. The escape sequence allows the modem to exit data mode and enter command mode when
Range:
Default: 43
Units: ASCII
S3 Command line termination character (user defined)
This register determines the ASCII values as the carriage return character. This character is used to end command lines and result codes.
Range:
Default: 13 (carriage return)
Units: ASCII
S4 Response formatting character (user defined)
This register determines the ASCII value used as the line feed character. The modem uses a line feed character in command mode when it responds to the computer.
Range:
Default: 10 (line feed)
Units: ASCII
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