routing the call to an internet protocol destination address based upon {TAIL ~ the internet protocol address} to which {HEAD ~ the called telephone number} was mapped 
to mapped
routing the call to an internet protocol destination address based upon { TAIL ~ the internet protocol address } to which { HEAD ~ the called telephone number } was mapped
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL REL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL