{HEAD ~ The ALR} cross references this URN to find a URL for the target, such as the URL for the VLR 105 and contacts {TAIL ~ the VLR} to start a session with the target device 
contacts
{ HEAD ~ The ALR } cross references this URN to find a URL for the target , such as the URL for the VLR 105 and contacts { TAIL ~ the VLR } to start a session with the target device
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH