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