Table 3: S-Registers Table
Register
Value
Description
S0
0 to 255
Automatic answering. Number of rings before answering. Disable
automatic answering=0. Default is 0.
S3
13
Carriage return character. Default is 13.
S4
10
Line feed character. Default is 10.
S5
8
Backspace character. Default is 8.
S6
2 to 10
Length of time in seconds to pause before dialing. Default is 2.
S7
1 to 255
Sets the length of time in seconds that the modem waits for a carrier
before hanging up. Default is 50.
S8
0 to 255
Number of seconds to pause when a comma "," is encountered in the
dial string. Default is 2.
S9
0 to 255
Carrier detect threshold. The length of time in tenths of a second a
signal is detected and qualified as a carrier. Default is 6.
S10
1 to 254
Number of tenths of a second from carrier loss to disconnect.
Default is 14. Disable carrier detect=255.
S11
50 to 255 DTMF tone duration and spacing in milliseconds. Default is 95.
8.6 Basic Action Commands
The following table describes the Basic Action Commands
Table 4: Basic Action Commands Table
Command
Description
A
Go off hook. Answer any incoming call.
D<dial string>
Dial. The dial string may contain the following characters:
Digits 0 to 9, *, #, A, B, C and D
The dial string may contain the following dial modifiers:
,
Pause during dialing.
W
Wait for dial tone.
@
Wait for quiet answer.
!
Hook flash.
$
Wait for billing tone.
;
After dialing, the phone remains in command state.
H
Disconnect and return to command state.
O
Return to online data state from command state.
8.7 Extended Commands
Extended commands use the extended syntax. To set a value using an extended command, use the
WRITE command:
+CMD=
xxx
where CMD is the command and
xxx
is the value. Some extended commands take more
than one value. For example, the Write command for two values becomes:
+CMD=
xxx,yyy
Some extended commands take characters strings as values, instead of numbers. In that
case, the syntax is:
+CMD="
CharacterString
"
Note that while spaces are ignored everywhere else, spaces are significant inside the
quotation marks. To read back a value, use the READ command:
