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