A method is disclosed that enables the delivery of relevant content to {HEAD ~ a telecommunications user} engaged in {TAIL ~ a call} 
A method is disclosed that enables the delivery of relevant content to { HEAD ~ a telecommunications user } engaged in { TAIL ~ a call }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL