IBM 2196 User Manual page 186

The following table lists the S Registers summary.
Table 6: S registers
Register Function
S0 Auto-answer ring
S1 Ring counter
S2 Escape code character
S3 Carriage return character
S4 Line feed character
S5 Backspace character
S6 Dial tone wait time
S7 Remote carrier wait time
S8 Comma pause time
S10 Carrier loss time
S11 Touch-tone dialing speed
S12 Escape character detect time
S29 Flash dial modifier time
IBM Personal Computer User Guide
B-14
Range/units
0-255 /rings
0-255 /rings
0-255 /ASCII
0-127 /ASCII
0-127 /ASCII
0-32 /ASCII
2-255 /seconds
1-255 /seconds
0-255 /seconds
1-255 /10ths of a second
50-255 /milliseconds
0-255 /50ths of a second
0-255 /10 milliseconds
Default
0
0
43
13
10
8
2
50
2
14
95
50
70