On the basis of a LINK ID held by the data, data requiring storage, {TAIL ~ e.g. data} making exclusive use of a wide bandwidth such as audiovisual data and large volume data packages, are determined among all the data sent to {HEAD ~ an optical network unit} 
On the basis of a LINK ID held by the data , data requiring storage , { TAIL ~ e.g. data } making exclusive use of a wide bandwidth such as audiovisual data and large volume data packages , are determined among all the data sent to { HEAD ~ an optical network unit }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL 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 OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD