The communications network 16 is preferably a conventional telecommunications network including a plurality of {TAIL ~ switches} and local exchange carriers that carry {HEAD ~ Internet traffic} 
The communications network 16 is preferably a conventional telecommunications network including a plurality of { TAIL ~ switches } and local exchange carriers that carry { HEAD ~ Internet traffic }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD