In an ADSL transmitter , {HEAD ~ data} is flamed and split between a fast path and {TAIL ~ an interleave path} by multiplexer  
is split between
In an ADSL transmitter , { HEAD ~ data } is flamed and split between a fast path and { TAIL ~ an interleave path } by multiplexer
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL OTH OTH REL REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH