Black Box MD1650A-JP, Справочное руководство

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CHAPTER 2: AT Commands
33
Examples (continued): CONNECT
Sometime later, the user picks up phone
NO CARRIER
ATS86?
25
OK
Delay 30 seconds
ATDT5551212
LINE-IN-USE
Try again some time later, user hangs up the phone
CONNECT
2.11 Test Command
Command: &T n V.54 Test Command
Values: n = 0, 1, 8
Default: None
Description:
The modem can perform selected test and diagnostic functions. A test
can be run only when the modem is in asynchronous operation in
non-error-correction mode (normal or direct mode). To terminate a
test in progress, the escape sequence (+++) must be entered first.
&T0
Abort. Stop any test in progress.
&T1 Start local analog loopback, V.54 Loop 3. If a connection exists
when this command is issued, the modem hangs up. A
CONNECT message is displayed at the start of the test.
&T8 Starts local analog loopback, V.54 Loop 3, with self-test. If a
connection exists, the modem hangs up before the test begins.
When the test is terminated, the number of detected errors is
reported to the computer.