ComStar SVD Owner’s Manual
56
Appendix F: S Registers
This appendix summarizes S registers. You can change the
setting of an S register using an AT command. For example,
ATS6=4
. The appendix assumes you are already familiar with how
to reset S registers.
Register
Range/Value
Default
Function
S0
0-255 rings
0
Number of rings to auto-answer
S1
0-255 rings
0
Counts incoming rings
S2
0-255 ASCII
43
Escape character
S3
0-127 ASCII
13
Carriage return character
S4
0-127 ASCII
10
Line feed character
S5
0-255 ASCII
8
Backspace character
S6
2-255 seconds
2
Dial tone wait time before blind
dialing
S7
1-255 seconds
50
Remote carrier wait time
S8
0-255 seconds
2
Comma pause time
S9
1-255 100 ms
6
Carrier detect response time
S10
1-255 100 ms
14
Delay between carrier loss and
hang up
S11
50-255 1 ms
95
Tone duration in DTMF dialing
S12
0-255 20 ms
50
Escape code guard time
S13
RESERVED
S14
BIT MAPPED OPTIONS
S15
RESERVED
S16
TEST MODE BIT MAPPED
OPTIONS
S17
RESERVED
S18
0-255 seconds
0
Modem test timer
S19-20
RESERVED
S21
V.24 BIT MAPPED OPTIONS
S22
SPEAKER BIT MAPPED
OPTIONS
S23
BIT MAPPED OPTIONS
S24
0-255 seconds
0
Sleep inactivity timer
S25
0-255 10 ms
5
Data Terminal Ready delay
S26
0-255 10 ms
1
RTS-to-CTS delay
S27
BIT MAPPED OPTIONS
