| Previous | UML Classes | Table of Contents | UML Packages | Next | 
   • 
               Port (from Ports	   ) on page 186 
               (merge increment) 
   Port is defined as a specialization of the general Port, adding an association to a protocol state machine. 
   Attributes 
   No additional attributes 
                           Associations•Semantics | 
                     |||||
| protocol: ProtocolStateMachine [0..1] | References an optional protocol state machine that describes valid | ||||
| interactions at this interaction point. | |||||
   The protocol references
                a protocol state machine (see ProtocolStateMachine (from ProtocolStateMachines	   ) on 
               page 555) that describes
               valid sequences of operation and reception invocations that may occur at this port.