Status Registers & Result Codes 21
5
Status Registers & Result Codes
In most bit-mapped S-registers, the default bit value is 0. Non-0 default values are
followed by an asterisk. Some bits are reserved for factory use and should not be
changed.
S-Registers "ATSn=x"
Command
Function & Description
Range
Ref.
S0
Number of rings before Auto Answer. 0 value disables auto-
answer.
0-255 (0)
ATA
S1
Ring counter.
0-255 (0)
S2
ASCII value of Escape character.
0-255 (43)
S3
ASCII value of Carriage Return character.
0-127(13)
S4
ASCII value of Line Feeder character.
0-127 (10)
S5
ASCII value of Backspace character.
0-32 (8)
S6
Waiting time before blind dialing. (seconds)
2-255 (2)
S7
Wait foe carrier after dial. (seconds)
1-255 (50)
S8
Pause time for comma. (seconds)
1-255 (50)
S9
Carrier detect response time. (1/10 seconds)
1-255 (6)
S10
Delay between loss of carrier and hang-up. (1/10 seconds)
1-255 (14)
S11
DTMF (Touch tone) tone duration. (1/10 seconds)
50-255 (95)
S12
Escape guard time. (1/50 seconds)
0-255 (50)
S18
Test timer. (seconds)
0-255 (0)
S25
Delay to DTR. (1 second for sync mode 1; 0.01 for otherwise) 0-255 (5)
S26
RTS to CTS delay interval. (0.01 seconds)
0-255 (1)
S30
Inactivity disconnect timer. (0.1 seconds)
0-255 (0)
S-Register Definitions
S0 - Number of Rings to Auto-Answer
Sets the number of the rings required before the modem automatically answers a call.
Setting this register to zero disables auto-answer mode.
S1 - Ring Counter
S1 is incremented each time the modem detects a ring signal on the telephone line. S1
is cleared if no rings occur over an eight second interval.
S2 - Escape Character
S2 holds the decimal value of the ASCII character used as the escape character. The
default value corresponds to an ASCII '+'. A value over 127 disables the escape process,
i.e., no escape character will be recognized.
S3 - Carriage Return Character
Sets the command line and result code terminator character. Pertains to asynchronous
operation only.
