Modem Command Guidelines
Repeating a Command
You can repeat the last command line issued by entering the
command. Because it also repeats the
A/
key function, you are not required to enter the
when repeating this command.
enter
The last command entered remains in the command buffer until
the modem is reset or power to the modem is turned off. Both
actions clear the buffer and make the
there is no command for the modem to repeat.
Understanding Result Codes
A result code is the modem's response to a command. It may
be issued in either of two possible formats: words (the long form,
also known as verbose) or numeric characters (the short form,
represented by digits). The result code format is set using the
command:
Vn
■ V1
■ V0
Using Online Mode
In the online mode, the transmitting modem receives characters
from the computer, converts the data to analog signals, then
transmits these signals over the telephone line.
The process of altering a signal for transmission is called
modulation. The receiving modem receives analog signals
from the telephone when in the online mode and converts or
demodulates the signal, returning it to the digital form that can
be used by the computer.
4
for words (default)
for numeric characters
Modem Command Guidelines (Advanced Users Only)
prefix and the
AT
prefix or press
AT
command invalid since
A/
enter