Multi-Tech Systems MT5634ZLX - Manual (Page 41)

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Chapter 3 - AT Commands, S-Registers, and Result Codes
MT5634ZLX/E
S-Registers
S-Registers are accessed using the S command (ATSn=x). The S-Registers supported by the
MT5634ZLX/E are described below.
S-Reg. Values Default Description
S0= 0 - 255 000 S0 sets the number of the rings required before the modem
automatically answers a call. Set S0=0” to disable auto-answer
mode.
S1= 0 - 255 000 S1 counts the incoming rings and stores the value to this register.
The value of this register is incremented with each ring. If no rings
occur over an 8 sec. interval, this register is cleared. User can read
but should not change this value.
S2= 0 - 255 043 S2 holds the decimal value of the ASCII character used as the
escape character. The default value (043) corresponds to an ASCII
character “+”. A value of 128 to 255 disables the escape process
(i.e., no escape character is recognized).
S3= 0 - 127 013 S3 holds the decimal value of the Carriage Return <CR> character
used as the command line and result code terminator. Pertains to
asynchronous operation only.
S4= 0 - 127 010 S4 holds the decimal value of the character recognized as a line
feed. The line feed control character is output after the carriage
return control character if verbose result code are used.
S5= 0 - 32, 127 S5 holds the decimal value of the character recognized as a
backspace. The modem will not recognize the backspace character
if this register is set to a value greater than 32008.
S6= S6 sets the length of time, in seconds, that the modem must wait
(minimum 2 seconds even if the value is less than 2) after going off-
hook before dialing the first digit of the telephone number.
S7= S7 sets the time, in seconds, that the modem must wait before
hanging up because carrier is not detected
S8= 0 - 65 002 S8 sets the time, in seconds, that the modem must pause when the
“,” dial modifier is encountered in the dial string.
S10= 1 - 255 020 S10 sets the length of time, in tenths of a second, that the modem
waits before hanging up after a loss of carrier.
S11= 50 - 150 095 S11 sets the DTMF duration and inter digit delay. Sets the duration
and spacing, in mini-seconds, in DTMF touch tine dialing.
S28= 0 - 255 001 V.34 modulation enable/disable:
0: disabled
1- 255: enabled
S30= 0 - 90 000 Inactivity timer. S30 sets length of time, in minutes, that the modem
counts when there is no data flow in or out the DTE serial port. A
connection is disengaged when the counter reaches the preset
value. Set S30 =0 to disable inactivity timer. For buffer mode only.