Another advantage of the present invention is that {HEAD ~ a telecommunications subscriber} does not need to keep {TAIL ~ track} of two different numbers and possibly need to dial two different numbers in order to reach a subscriber on the move 
not need to keep
Another advantage of the present invention is that { HEAD ~ a telecommunications subscriber } does not need to keep { TAIL ~ track } of two different numbers and possibly need to dial two different numbers in order to reach a subscriber on the move
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH