User guide

S-Register Definitions
Chapter 3 Modem Emulation Commands 269
S-Register Definitions
Following is a description of the S-registers that can be set.
AT&V
Displays current values and settings.
• AT&V0- AT&V5: Displays S-Register/command values for the current
and stored configuration.
• AT&V6: Displays current network settings.
OK n=0 to 5
ERROR
Otherwise
AT&Wn Store configuration. Stores the specified S-registers in flash memory.
OK n=0 or 1
ERROR
Otherwise
AT
Command
Function
Result
Code
Register Function Range Units Default
S0 Rings to Auto-Answer. Sets the number of rings required
before the Digi device automatically answers a call.
Setting this register to Zero disables auto-answer mode.
0-255 Rings 0
S1 Ring Counter. Specifies the current number of rings. S1
is incremented each time the modem detects a ring
signal on the telephone line. S1 is cleared when the
existing connection is established or dropped.
0-255 Rings 0
S2 Escape Character. S2 holds the 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. That is, no escape
character will be recognized.
0-255 ASCII 43
S3 Carriage Return Character. Sets the value of the
carriage return character used when displaying
commands or results.
0-127 ASCII 13
S4 Line Feed Character. Sets the character recognized as
a line feed when displaying commands or results. If
verbose result codes are used, the Line Feed Character
is output after the Carriage Return Character.
0-127 ASCII 10
S5 Backspace Character. Sets the character recognized as
a backspace, used to erase the last character typed on
the command line.
0-32 ASCII 8
S12 Escape Prompt Delay. The amount of time required
before and after an escape sequence (+++) is entered in
order for the modem to transition from data mode to
command mode.
0-255 0.02
second, 20
ms
50
1 second