MP Command: MS

MS - Modem Status. 

This command displays the result of the system modem’s power-on selftest and shows the state of the modem lines. Each time the system is powered-on, the MP command performs a selftest and then reads a modem register containing the results of the last selftest.

The modem selftest register is read by using the AT&T8 command. The result displayed is exactly the same as the one returned by the modem. No analysis of the result is done.

If the MP is unable to complete the modem access (auto-identification and self-test register reading) before the MS command is performed, the following message will be displayed:

Modem initialization not done. Use MR to complete it.

The MS command also displays the state of the modem lines. This display is updated when the operator enters a Carriage Return. The command displays the current state of the status signals (DCD, CTS, DSR, RI) and the last state of the control signals (FS, GPO, DTR, RTS) as set by the firmware.

Example F-17 MS Command

See also: MR