IBM Aptiva Series Handbook

B-14 Appendix B: Modem information
S registers
S registers are information storage areas inside the modem. The AT command set uses the S registers to configure modem
options. Some S registers have default settings. For normal modem operations, the default settings are usually adequate.
However, special circumstances may require you to change some defaults. To change or read the value of an S register, begin
the command with the letters
AT
.
To read the value of an S register:

Use the
ATS
r
?
command (
r
=register number 0-28).
For example, to read the value of S register 0, type
ATS 0 ?
and press
Enter
.
To change the value of an S register:

Use the
ATS r=n
command (
r
=register number 0-28,
n
=the new value you want to assign).
For example, to change the value of S register 0 to 20 rings, type
ATS 0 =2 0
and press
Enter
.
The following table lists the S Registers summary.
Table 14: S registers
Register Function Range/units Default
*0 Auto-answer ring 0-255 /rings 0
* Ring counter 0-255 /rings 0
*! Escape code character 0-127 /ASCII 43
*6 Carriage return character 0-127 /ASCII 13
*< Line feed character 0-127 /ASCII 10
*1 Backspace character 0-127 /ASCII 8
*2 Dial tone wait time 2-65 /seconds 2
v65xahb.book : app-b.fm Page 14 Friday, January 16, 1998 4:27 PM

IBM Aptiva Series Specifications

General

Brand	IBM
Model	Aptiva Series
Category	Desktop
Language	English