The accessor location register 4 herein said controller contacts a visitor location register corresponding to said second URL for {HEAD ~ information} relevant to {TAIL ~ the communications unit} in order to initiate said third contact attempt and to cause said visitor location register to start a session with the communications unit 
relevant to
The accessor location register 4 herein said controller contacts a visitor location register corresponding to said second URL for { HEAD ~ information } relevant to { TAIL ~ the communications unit } in order to initiate said third contact attempt and to cause said visitor location register to start a session with the communications unit
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH