Program data transmitted via asynchronous communication links is re timed and {HEAD ~ assistance} is provided for outputting {TAIL ~ program data} on such asynchronous communication links to reduce a variation in end to end delay incurred by the program data 
is provided for outputting
Program data transmitted via asynchronous communication links is re timed and { HEAD ~ assistance } is provided for outputting { TAIL ~ program data } on such asynchronous communication links to reduce a variation in end to end delay incurred by the program data
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL REL REL 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