The address determination module transmits an address request message, including {HEAD ~ access point names} corresponding to the services, to a media access gateway and receives {TAIL ~ an address response message} 
The address determination module transmits an address request message , including { HEAD ~ access point names } corresponding to the services , to a media access gateway and receives { TAIL ~ an address response message }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL