RC224ATL/224ATLV
5.0 S Registers
EmbeddedModem Family
Table 5-2. S Register Description (1 of 8)
Register
Default
Range
Units
Description
S0
00
0–255
Rings
Ring to Answer On. Assigning S0 a value from 1 to 255 places the
modem in auto-answer mode. The modem will auto answer after
the specified number of rings has occurred.
Setting S0 to 0 disables auto-answer.
S1
S2
00
43
0–255
0–127
Rings
ASCII
Ring Count. S1 is incremented each time a ring is detected. It will
be cleared if no ring occurs within 8 seconds after the last ring.
Escape Code Character. S2 holds the ASCII value used for the
escape code. The + character responds to the factory default value.
Values greater than 127 disable the escape code operation. To
enter the command mode when the escape code is disabled, a loss
of carrier must occur or DTR must be set to a 0 (dependent on &D
command).
S3
S4
13
10
0–127
0–127
ASCII
ASCII
Carriage Return Character. S3 holds the ASCII value for the
carriage return; 13 is the standard value. The character in S3 is
both the command line terminator and the result code terminator.
Line Feed Character. S4 holds the ASCII value for the line feed.
The line feed character is output after the carriage return only
when English word result codes have been selected (V1). If a line
feed character is not desired, it may be changed to a null, but it
cannot be totally disabled.
S5
08
0–32, 127
ASCII
Backspace Character. S5 holds the ASCII value for the backspace
character. This character is both the backspace key and the
character echoed to move the cursor back one position. Normally
a value of 8 is used. The backspace character must not be set to a
value corresponding to a printable ASCII character (i.e., between
33 and 126) or to a value greater than 127. A backspace is used as
follows:
The keystroke is echoed back to the terminal and the cursor moved
back over the last character entered. The last character in the com-
mand buffer is deleted.
S6
S7
02
30
2–255
1–255
Seconds Wait for Dial Tone. S6 specifies the wait time before dialing. The
delay allows time for the dial tone to occur on the telephone line.
The minimum time is 2 seconds. Values greater than 2 seconds
may be necessary if trouble is encountered getting dial tones.
Seconds Wait for Carrier After Dial. S7 specifies the delay time that the
modem waits for the carrier signal from the remote modem before
hanging up. Typically, a delay time of 30 seconds is enough, but it
can be extended to 255 seconds. If the carrier is not detected
within the specified time period, the modem hangs up and sends
the NO CARRIER result code. If carrier is detected, the modem
returns the CONNECT result code and goes on-line.
D224ATLVDSC
Conexant
5-3
CONEXANT [ CONEXANT SYSTEMS, INC ]
