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Backspace Key
Use the backspace key to change the command statement or correct
errors. The backspace key allows the cursor to be moved back to the
character(s) in error. The command can then be retyped from that point.
Example: ATD5551211 has been typed. To change the last 1 to 2, press
the Backspace key once, type 2, and press Enter to execute the
command.
Repeating a Command A/
This command tells the computer to repeat the last command stored in
its buffer. It automatically reexecutes the command without retyping.
The return key does not need to be pressed.
Example: The ATD5551212 command has been executed, and the
phone is busy. To repeat the instruction type A/. Do not use AT before
this command as AT empties the buffer and there would be no command
to repeat.
Numbered Commands
Series of commands that start with the same letter are distinguished by a
number following the letter.
For example, the M0 command selects speaker always off, M1 speaker
on until carrier detected, and M2 selects speaker always on.
In all cases, the zero (0) may be omitted so the commands M and M0 are
identical. For clarity, this manual uses the nonzero form of commands.
The modem treats both the same but zeros count against the buffer total.
Group Commands
A group of commands can be typed in a single command statement.
Pressing the Enter key sends the entire command string to the modem,
which executes each command individually in the order it appears in the
command statement reading from left to right.
V.3400
AT Commands
5-5
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