Home and Visited Networks
The differentiation between home network and visited network is technically given by the type of subscriber entry in a specific network. If a subscriber has no entry in the home subscriber register of the network (e.g. Home Location Register (HLR) in GSM networks or local customer database in WLANs), the required subscriber data must first be requested by the visited network e.g. from the subscriber's home network in order that the subscriber can be authenticated and any authorization for using the network services can be checked. The "visiting" subscriber acquires an entry in a user database of the visited network (e.g. Visited Location Register (VLR)) and the authorized network services are enabled. For the roaming procedure in practice, the possibility of assigning the subscriber data is always indispensable in order that authentication, authorization and billing of the subscriber can be performed in the corresponding network. Thus, the term roaming is not linked to a specific network standard, but rather to the type of subscriber entry in the home subscriber register of the mobile radio network. If a subscriber can use his personal service profile, which he uses in the home network, in the visited network as well, this is also referred to as Global Service Roaming Capability.
Read more about this topic: Roaming
Famous quotes containing the words home and, home, visited and/or networks:
“That, of course, was the thing about the fifties with all their patina of familial bliss: A lot of the memories were not happy, not mine, not my friends’. That’s probably why the myth so endures, because of the dissonance in our lives between what actually went on at home and what went on up there on those TV screens where we were allegedly seeing ourselves reflected back.”
—Anne Taylor Fleming (20th century)
“You may be used to a day that includes answering eleven phone calls, attending two meetings, and writing three reports; when you are at home with an infant you will feel you have accomplished quite a lot if you have a shower and a sit-down meal in the same day.”
—Anne C. Weisberg (20th century)
“The tops of mountains are among the unfinished parts of the globe, whither it is a slight insult to the gods to climb and pry into their secrets, and try their effect on our humanity. Only daring and insolent men, perchance, go there. Simple races, as savages, do not climb mountains,—their tops are sacred and mysterious tracts never visited by them. Pomola is always angry with those who climb the summit of Ktaadn.”
—Henry David Thoreau (1817–1862)
“The great networks are there to prove that ideas can be canned like spaghetti. If everything ends up by tasting like everything else, is that not the evidence that it has been properly cooked?”
—Frederic Raphael (b. 1931)