Each modem includes a transmitter section for transmitting data and a receiver section for receiving data, and is of the discrete multitone type, i.e., the modem transmits data over {HEAD ~ a multiplicity} of {TAIL ~ subchannels} of limited bandwidth 
Each modem includes a transmitter section for transmitting data and a receiver section for receiving data , and is of the discrete multitone type , i.e. , the modem transmits data over { HEAD ~ a multiplicity } of { TAIL ~ subchannels } of limited bandwidth
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH