Upon receiving of {HEAD ~ a request} for establishing {TAIL ~ communication} between two initiating hosts, retrieving means is used for obtaining all information for establishing of a successful communication from said port sharing table 
for establishing
Upon receiving of { HEAD ~ a request } for establishing { TAIL ~ communication } between two initiating hosts , retrieving means is used for obtaining all information for establishing of a successful communication from said port sharing table
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH