3.2.5.5.1 Processing Deactivate All PDU
The structure and fields of the Deactivate All PDU are specified in section 2.2.3.1, and the techniques specified in section 3.2.5.2 demonstrate how to process the contents of the PDU.
Once this PDU has been processed, the client MUST disable its graphics and input protocol handlers and prepare either for a capability re-exchange (which will employ a Deactivation-Reactivation Sequence as described in section 1.3.1.3) or a disconnection (the client MUST be prepared to process the optional MCS Disconnect Provider Ultimatum PDU (section 3.1.5.1.2) after receiving the Deactivate All PDU, but prior to the actual disconnection).