Test Commands (&T) - Black Box 325 User Manual

MODEM 325 AND MODEM 325 CARD
6.10 Test Commands (&T)
Diagnostic tests are used to isolate faults in the communications path. Diagnostic tests will terminate after
the period of time specified by S18. If S18 is set to 0, the timer is disabled and tests will run continuously.
Tests may also be terminated by the AT&T command. When in test modes without test pattern, issue the
escape sequence (+ + +) to return to command mode before terminating the test with the AT&T
command.
Command
&T
&T1
&T2
&T3
&T4
&T5
&T6
&T7
&T8
&T9
%T
†default
Local analog loopback with or without test pattern is the only test available in error-control
mode.
7 0
Table 6-13. Test Commands (&T).
Operation
Terminate any test
Initiate local analog loopback test
Initiate remote analog loopback test
Initiate local digital loopback test
Allows acceptance of remote requested digital loopback†
Disallows acceptance of remote requested digital loopback
Initiate remote digital loopback test
Initiate remote digital loopback with test pattern
Initiate local analog loopback test with test pattern
Initiate remote analog loopback with test pattern
Transmit test pattern
NOTE