However, as soon as the controller detects an outgoing long distance call which commences with a digit 1, the controller inserts a prefix or access code to the dialed number to connect the subscribers telephone unit with a long distance provider or carrier in {HEAD ~ accordance} with {TAIL ~ the desired algorithm} 
However , as soon as the controller detects an outgoing long distance call which commences with a digit 1 , the controller inserts a prefix or access code to the dialed number to connect the subscribers telephone unit with a long distance provider or carrier in { HEAD ~ accordance } with { TAIL ~ the desired algorithm }
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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL