{TAIL ~ Each modem} includes {HEAD ~ 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 a multiplicity of subchannels of limited bandwidth 
{ TAIL ~ Each modem } includes { HEAD ~ 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 a multiplicity of subchannels of limited bandwidth
TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD 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 OTH