This attribute indicates the state of V.42. Valid states are:
notActive: The V.42 link connection with the PSTN modem is not
established. None of the V.42 functions including the error
detection, error correction, and flow control is provided to the data
call. This is the initial state of V.42.
disconnected: This means that the V42 link is disconnected.
linkSetup: The V.42 operation enters this state from the
disconnected state after the V.42 sends to the PSTN modem a Set
Asynchronous Balanced Mode Extended (SABME) frame in an
attempt to establish the error control connection with the PSTN
modem.
frameReject: The V.42 operation enters into this state after it
identifies an invalid frame sent by the peer and it sends back a frame
reject (FRMR) frame to the peer.
disconnectRequest: The V.42 operation enters into this state after it
sends to the peer a disconnect (DISC) frame with the attempt to
disconnect the V.42 error control link.
informationTransfer: The V.42 enters into this state after it receives
a UA (unnumbered acknowledgment) frame which the peer sent
upon receipt of the SAMBE frame from IWF V.42. Once in this
state, the V.42 can exchange data and supervisory information with
its peer.
waitingAck: The V.42 enters this state after it sends polling enquiry
to its peer. The V.42 sends the polling enquiry when it receives a
reject frame (REJ) from its peer or either its acknowledgment timer
or inactivity timer timed out on the information frames sent out.