Black Box 3600 MODEM manual Terminating a Test in Progress &T, Test Commands Operation

Test Mode Operation

Note

These tests do not apply to fax mode and should only be performed when the modem is configured for data operation.

LDL, RDL, and RDL/TP tests are initiated after making an online data connection in normal or direct mode only. LAL and LAL/TP are initiated while in offline command mode. These tests can be initiated by AT commands or by using the LCD front panel SELECT TEST menus. Refer to Table 7-2.

Note

Bold text indicates command parameter defaults.

Table 7-2. Test Commands

Command	Operation
&T	Terminate any test
&T1	Initiate local analog loopback test
&T3	Initiate local digital loopback test
&T4	Grant remote requested digital loopback
&T5	Deny remote requested digital loopback
&T6	Initiate remote digital loopback test
&T7	Initiate remote digital loopback with test pattern
&T8	Initiate local analog loopback test with test pattern
%T	Transmit test pattern

Terminating a Test in Progress &T

Tests can be terminated manually or automatically. The &T command terminates a test manually. The modem automatically goes to command mode during LDL, LAL/TP, and RDL/TP tests. Enter the &T command to terminate the tests. For LAL and RDL, enter the escape sequence (+++) before the &T command to go to the command mode.

By preloading register S18 with 1 to 255, each test mode automatically times out after the specified number of seconds and exits back to the command mode. Loading S18 with 0 disables the auto timeout feature and the test will run continuously until manually terminated.

7-2 Modem 3600