The present invention relates to telecommunications in general, and more particularly to {HEAD ~ a method} for detecting voice presence on {TAIL ~ a communication line} 
The present invention relates to telecommunications in general , and more particularly to { HEAD ~ a method } for detecting voice presence on { TAIL ~ a communication line }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL