User's Manual

2.3 S Registers Definitions

S registers generally affect how the AT commands perform. Contents of the

registers can be displayed or modified when the modem is in command mode.

To display the value of an S register: TYPE: ATSn?, where n is the register

number.

PRESS: Enter To modify the value of an S register:

TYPE: ATSn = r where n is the register number, and r is the new register

value.

PRESS: Enter

S0 Auto Answer Ring Number

This register determines the number of rings the modem will count before

automatically answering a call. 0 (zero) is that asks modem don?t do

automatically answer at all. When disabled, the modem can only answer with

an ATA command.

Range: 0-55

Default: 0

Units: rings

S1 Ring Counter

This register, ring counter, is read only. The value of S1 is incremented with

each ring. If no rings occur over a 6 second interval, this register is cleared.

Range: 0-55

Default: 0

Units: rings

S2 AT Escape Character (User Defined)

This register determines the ASCII valued used for an escape sequence. The

default is the ??character. The escape sequence allows the modem to exit

data mode and enter command mode. Values greater than 127 disable the

escape sequence.

Range: 0-255

Default: 43

Units: ASCII

S3 Command Line Termination Character (User Defined)