The accessor location register 4 herein said {HEAD ~ controller} contacts {TAIL ~ a visitor location register} corresponding to said second URL for information relevant to 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 
contacts
The accessor location register 4 herein said { HEAD ~ controller } contacts { TAIL ~ a visitor location register } corresponding to said second URL for information relevant to 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 HEAD HEAD HEAD HEAD HEAD REL TAIL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH