The interface extends the remote procedure calling facility beyond the distributed system by classifying the different types of remote procedure calls that can be issued to a switched communications gateway in the distributed system, and permitting the issuance of {HEAD ~ multiple threads} of {TAIL ~ control}, according to the type of function the procedure call represents 
The interface extends the remote procedure calling facility beyond the distributed system by classifying the different types of remote procedure calls that can be issued to a switched communications gateway in the distributed system , and permitting the issuance of { HEAD ~ multiple threads } of { TAIL ~ control } , according to the type of function the procedure call represents
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