The information processing system 1, wherein the switching hub of the line concentrator apparatus transmits to the external network the information received from the first external device regarding {HEAD ~ a processing status} of {TAIL ~ the first external device} 
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The information processing system 1 , wherein the switching hub of the line concentrator apparatus transmits to the external network the information received from the first external device regarding { HEAD ~ a processing status } of { TAIL ~ the first external device }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL