At Commands; At Command Set Summary - Sierra Wireless AirLink RV50 Series User Manual

D: AT Commands

AT Command Set Summary

Note: If you are writing software to parse AT command responses, Sierra Wireless recom-
mends that you design the software to be independent of the amount of whitespace.
Whitespace is defined as ASCII space, tab, carriage return and linefeed characters and may
appear in any combination, not necessarily containing all of the above.
Using a terminal connection (Telnet) or SSH protocol, you can send AT commands to
configure the device, command it to do something, or query a setting.
• AT commands must always be terminated by a carriage return <CR> (ASCII
character 0x0D), i.e., 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 terminating <carriage return>)
is 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 surrounded 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: AT commands work for the port on which they are executed. For example, if the user
types ATE1 and then AT&W using a USB/serial port connection, it sets the USB/serial port to
Echo On, but not the telnet connection or the RS232 serial port.
If you need to change the port for Telnet (for example, you have the default port
blocked on your firewall), the option is on the Services > Telnet/SSH tab. The default
Telnet port is 2332. You can also change the Telnet timeout; if the connection is idle,
default timeout is 2 minutes. This is the internal Telnet on the device to pass AT
commands and not TCP PAD.
AT commands are shown in upper case, but they are not case sensitive.
This appendix organizes the commands into functional groups to allow you to more
quickly locate a desired command when you know the operation but not the
command. Commands under each topic are listed alphabetically.
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