AT&T 7400B Plus User Manual page 48

CHAPTER 3: CONFIGURATION AND OPERATION
Page 3-16
A Sample On-Line Session This section outlines how to perform a simple on-line session
using the ''AT'' commands described in this chapter. For more
information about all ''AT'' commands, see Chapter 3,
"Configuration and Operation" and Appendix A, "AT Command
Set."
Starting the Session
The following is a sample data call to a fictitious bulletin board
service. If you know the number of a ''real'' bulletin board
service, you might try an actual log on by using that number and
following the suggestions in this session.
at d 9-555-7575 (
CONNECT 1200
The D command is used to dial the number of the bulletin board.
Since the connection was made successfully, the 7400B Plus
responded with a message that says the remote end connected
and the data speed to be used is 1200 bps.
The remote end may do nothing until you press a particular key a
few times, usually (
Enter
communications application programs, this sometimes required
input lets the remote end determine whether you have connected
with the correct communications parameters in effect.
Possible Display Problems
If the response from the remote end is unintelligible ''garbage,''
chances are that the speed or parity bit selection is incorrect. In
this case, assuming that your terminal device allows, the
parameters may be corrected without disconnecting the call.
Otherwise, you must disconnect, correct the parameters, and then
try the call again.
Another possible problem is that the remote end response
contains normal words mixed in with strange characters, many of
which are left brackets ([). This usually indicates that the remote
device is sending ANSI display control sequences, and your
terminal does not recognize them (ANSI stands for American
National Standards Institute).
On a PC, this can generally be remedied by first disconnecting the
call, editing the PC's CONFIG.SYS file to include the line
DEVICE=ANSI.SYS
rebooting the PC, and then trying the call again. (For a log off
procedure, see the alternative method under ''Disconnecting a
Data Call,'' below.)
DEFINITY Communications System
7400B Plus Data Module
)
Enter
) . Typical of many data
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