mdmLineState
offHook(3), -- and not connected
"Allows the inspection and alteration of the state of the
modem. Management commands may change the state to `on-
hook', `busied-out', or `reset' from any state. No other
alterations are permitted from the management protocol.
When this object is set to reset, the modem shall be reset
and the value will change to the modem's new, implementation