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