Sierra Raven EDGE - Manual (Page 48)

Data Communication and Host Modes
Rev 3.0B Feb.08 44
Basic Modes
AT Mode
Using a terminal connection, AT commands are used to
configure the modem, command it to do something, or query a
setting. For a full listing of the AT commands, refer to the
appendix. AceManager is a graphical user interface for most
AT Commands.
• AT commands must always be terminated by <CR> (ASCII
character 0x0D), a carriage return (pressing enter on the
keyboard). Some may also include a new line or line feed
<LF>.
• If E=1 (Echo On), the AT command (including the termi‐
nating <carriage return) will be displayed (output) before
any responses.
• Two settings affect the format of AT command output: V
(Verbose) and Q (Quiet).
• If Q=1 (Quiet On), no result codes are output whatsoever,
so there is no response generated by a (non query)
command.
• If Q=0 (Quiet Off), result codes are output. The format of
this output is then affected by the Verbose setting.
If Quiet mode is off, the result code is affected as follows:
For V=1 (Verbose mode), the textual result code is sur‐
rounded by a carriage return and new line. Any AT
query response is also surrounded by a carriage return
and new line.
For V=0 (Terse mode), a numeric result code is output
with a single trailing carriage return (no new line is
output), while any AT query response is followed by a
carriage return and new line (there is no preceding
output).
• For example, possible output to the AT command “AT”
with carriage return (assuming quiet mode is not on) is:
carriage return ‐ if V=0
carriage return and new line OK another carriage
return and new line ‐ if V=1
Note: These commands work for the port on which they are executed.
For example, if the user types ATE1 and then AT&W using a serial
port connection, it will set the serial port to Echo On.