AT Commands F-3
AT Commands
%A
n Auto-Reliable Fallback Character
Where n is an integer between 0 and 127 indicating an ASCII character (default is 0,
the auto-reliable fallback character is disabled).
Sets the ASCII character recognized as the auto-reliable fallback character on the
answering modem. In auto-reliable mode, when the modem encounters an incoming
auto-reliable fallback character from the remote system, it automatically switches to
normal mode and passes the character to the serial port. Auto-reliable fallback
character recognition stops if the modem receives a SYN character (decimal 22).
NOTE
•
Do not set n=63 or n=126. These settings interfere with V.42 negotiations.
•
With this command, \N3\C2 must also be set.
*A
Request Remote Access
Initiates a request for remote access. When you type AT*A the requesting modem
waits 10 seconds for a response from the answering modem. If that modem denies
remote access, the requesting modem displays REMOTE ACCESS FAILED (numeric
40) and returns to command state.
This command automatically sends the character set by *S. For the *A command to be
successful, *S must be set the same on both modems.
NOTE
Register S12 (guard time) should be set to the same value on both modems. If
register S12 is set to a value greater than 127, the requesting modem waits up to
20 seconds for a response to a remote access request. Remote access is available
only during a normal connection or during an MNP reliable connection without
data compression.
