Problems
Caller identification between countries is often not transmitted, instead with the display indicating "UNAVAILABLE" or "INTERNATIONAL", but it is becoming more widely available including the country calling code. This is usually the case with mobile phones and international roaming. However, the overseas number may be compressed into a "domestic" format and thus possibly not be recognizable: e.g. a US number 1 646 555 1212 may be displayed in the UK as 0646 555 1212, instead of 001 646 555 1212 (or as +1 646 555 1212, where the "+" represents the access code to dial international numbers).
Some callers have situations in which revealing the number being called from would invade their privacy or cause other severe problems. Calls from women's shelters often have outgoing caller ID blocked.
Caller ID may not give the caller's information if the caller is using a discount or travel calling program or a voice over IP phone, because those systems use intermediate telephone numbers in the country being called.
Some long distance telephone cards, especially those using VOIP to carry calls, mask caller ID information. These calls are commonly displayed as "Out of Area".
Read more about this topic: Caller ID
Famous quotes containing the word problems:
“Our young people are diseased with the theological problems of original sin, origin of evil, predestination, and the like. These never presented a practical difficulty to any man,—never darkened across any man’s road, who did not go out of his way to seek them. These are the soul’s mumps, and measles, and whooping- coughs, and those who have not caught them cannot describe their health or prescribe a cure. A simple mind will not know these enemies.”
—Ralph Waldo Emerson (1803–1882)
“Hats have never at all been one of the vexing problems of my life, but, indifferent as I am, these render me speechless. I should think a well-taught and tasteful American milliner would go mad in England, and eventually hang herself with bolts of green and scarlet ribbon—the favorite colour combination in Liverpool.”
—Willa Cather (1876–1947)
“I’m no good at being noble, but it doesn’t take much to see that the problems of three little people don’t amount to a hill of beans in this crazy world. Someday you’ll understand that.”
—Julius J. Epstein, U.S. screenwriter, Philip Epstein, screenwriter, Howard Koch, screenwriter, and Michael Curtiz. Rick Blaine (Humphrey Bogart)