The digital data is also encoded to prevent voice encoding circuitry in the telecommunications network from corrupting {TAIL ~ the synthesized audio tones} representing {HEAD ~ the digital data} 
The digital data is also encoded to prevent voice encoding circuitry in the telecommunications network from corrupting { TAIL ~ the synthesized audio tones } representing { HEAD ~ the digital data }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD