{HEAD ~ A customer computer} connects to an online service provider by {TAIL ~ phone}, Internet, or other telecommunications link 
connects by
{ HEAD ~ A customer computer } connects to an online service provider by { TAIL ~ phone } , Internet , or other telecommunications link
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH