{TAIL ~ Operating means} are provided for operating the first service in connection with the second service, so that the first service can utilize {HEAD ~ the second channel} 
{ TAIL ~ Operating means } are provided for operating the first service in connection with the second service , so that the first service can utilize { HEAD ~ the second channel }
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 HEAD HEAD HEAD HEAD HEAD HEAD HEAD