&T0 TERMINATE TEST IN PROGRESS
If a V.54 loopback test is in progress as a result of executing an &Tn command, then the &T0 command will cause that test to be terminated, provided that the modem is in the command state or a V.54 state that accepts commands from the DTE. See specific &Tn command descriptions for termination actions.
&T1 INITIATE LOCAL ANALOG LOOPBACK (See Figure 2)
When the AT&T1 command is entered, the modem goes on hook and configures itself for analog loopback. DSR is turned off (if &S1 is in effect), the analog loopback state is entered, and the test timer is set to the value in S18. A connect result code is sent to the DTE, and the test timer then begins its count down. The test terminates when the test timer expires. If S18 equals 0, then the test must be terminated by an &T0, H0, or Z command. While any command may be entered while the modem is in this test state, the modem response is not specified except for H0, &T0 and Z, any of which will terminate the test. Upon termination of the test, the modem enters the command state.
RESULT CODE | DESCRIPTION |
CONNECT | When local analog loopback state is |
| entered. |
ERROR | If any other &Tn test is active (except |
| &T0) or if in the |
| state. |
OK | After test is stopped by test timer, the |
| H0 command, or the &T0 command. |
MIU Installation, Operation & Diagnostics Edition: January 25, 1999 | Page 19 |