State of the Modem

Ready

Modem is available for use.

Connecting

Someone is attempting to connect to the modem.

Bound

Modem is in a state between active and connnecting, but is committed to an assigned port.

Connected/Active

Modem is connected.

Admin

Modem has been busied out.

Test

Modem is under test.

Error

Modem is not available; transmission is permanently interrupted.

Halt

Modem card or board is removed.