A communication system includes a plurality of {HEAD ~ channels}, a first service that utilizes at least a first channel for transmission, and a second service that utilizes {TAIL ~ at least a second channel} for transmission 
A communication system includes a plurality of { HEAD ~ channels } , a first service that utilizes at least a first channel for transmission , and a second service that utilizes { TAIL ~ at least a second channel } for transmission
OTH OTH OTH OTH OTH OTH OTH 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 TAIL TAIL OTH OTH