Description: Parameter specifying the different DPNSS Layer 2 DLC states.

oos - Out Of Service This State can be entered immediately following power up or due to a maintenance action, eg following reset failure. It is the state in which all DLCs exist before activation of the Data Link Layer. A DLC remains in the 'Out of Service' state if it is not being used across a particular physical link. In this state all received frames are ignored.

idle This is the state which a DLC enters from the OOS state while awaiting to be started. In this state reset requests from the remote PBX are not ignored, as in the Out of service state. If a DLC is reset remotely the local data link layer does not need to reset it. When a DLC is started up locally it moves from this state to Reset Attempted.

resetAttempted This is the state which a DLC enters when a reset request is sent on it. The DLC enters the Reset Complete state on completion of the reset procedure.

resetComplete This is the state of a DLC which has just been successfuly reset. In this state, all the state variables are set to 0.

overload This indicates that a DLC is not able to process the L2 messages due to various overload reasons which can

-- Mukundan/Naganathan/Mangalpally/Anantharaman 23

-- Internet Draft draft-ranjith-dpnss-mib-00.txt November 2000

result for example when the layer 2 peer DLC is sending messages at a rate faster than the what the near-end can handle.

recvOverrun - receive overrun This indicates that the DLC is receiving layer 2 messages from a peer at a rate faster than it can buffer/process.

babbling This indicates the receipt of an unexpected 'glitch- message' on all this DLC.

crptMsg - corrupt message This indicates the receipt of a corrupt (but correctly framed) DPNSS Layer 2 message on this DLC.