AT Commands and S-Registers
B-24
Issue 1 April 1994
Table B-1. AT Command and S-Register List (23 of 34)
AT
Command/
S-Register
Description
&J
n
Transmit Mode
Sets Permissive control mode for transmit level,
overriding any preceding &
I
command.
&J or &J0 Permissive
mode
&M
n
, &Q
n
Async/Sync Mode and Computer Dialer Type
NOTE: &M and &Q perform the same function. It
is not necessary to enter both commands.
&M0, &Q0
Enables asynchronous operation with
AT command protocol dialing.
&M1, &M3 &Q1, or &Q3
Enables synchronous operation with
AT command protocol dialing.
&M2, &Q2
Enables synchronous operation with DTR
dialing method. (Note that the &D
command must be set to &D2.)
&P
n
Pulse Dialing Make/Break Ratio
Sets the relative duration of pulses in Pulse
Dialing mode.
&P0
Make/break ratio is 39 milliseconds to
61 milliseconds
&P1
Make/break ratio is 33 milliseconds to
67 milliseconds