The value identifies the present state of the PPP link. The closed(1) state indicates that the link is down and there is no attempt being made to open it and all connection requests from peers are rejected. In listen(2) state, the link is down and there is no attempt being made to open it, however, all the connection requests from peers are accepted. The state request-sent(3) indicates that an active attempt is being made to open the link. In this state, a Configure-request packet has been sent and no Configure-Ack has yet been received. In the state ack-received(4), a Configure-request packet has been sent and Configure-Ack packet has been received. The state ack-sent(5) indicates that a Congigure-request and Configure-Ack packets have been sent and Configure-Ack has not yet been received. The opened(6) state implies that a connection has been made and data may be sent. The state term-sent(7) indicates that an attempt is being made to close the connection and that a Terminate-request packet has been sent and a Terminate-Ack packet has not yet been received.