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S-Registers Reference

S-Registers Definitions

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

ters 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

Auto Answer Ring Number

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

matically answering a call. Enter 0 (zero) if you do not want the modem to auto-

matically answer at all. When disabled, the modem can only answer with an ATA

command.

Range:

−

255

Default:

Units:

rings

Ring Counter

This register, Ring Counter, is read only. The value of S1 is incremented with each

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

Range:

−

255

Default:

Units:

rings

AT Escape Character (user defined)

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

fault is the + character. The escape sequence allows the modem to exit data mode

and enter command mode when on-line. Values greater than 127 disable the es-

cape sequence.