Register for {HEAD ~ and method} of providing {TAIL ~ contact information} for a communications unit identified by a uniform resource name 
of providing
Register for { HEAD ~ and method } of providing { TAIL ~ contact information } for a communications unit identified by a uniform resource name
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH