• Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint
Share this Page URL
Help

Part I: Today’s Technology > Keeping One Phone Number across the Globe: World P...

Chapter 6. Keeping One Phone Number across the Globe: World Phones

If you’ve ever tried to place an international call on your mobile phone from within the United States, you’ve probably heard a message saying that “your account is not authorized to make calls to this phone number” or something similar. The majority of mobile phones in the United States work well within the country itself, but have no capability or are not enabled for international calling. For people who have business relationships or friends and relatives abroad, this can be an issue. Additionally, frequent travelers abroad may wish to use their own mobile phones and their own phone numbers to make and receive local in-country calls or calls to and from the United States. There is an answer for both of these situations, and there are many different phones and service plans available from which to choose.

The whole issue around international calling stems from the divergent and incompatible wireless communication standards that have evolved over the last 20 years or so, particularly within the United States. One of the problems with wireless communications within the United States is that the technology has grown using standards that are very different from the rest of the world’s. While many of the countries within Europe and elsewhere have standardized on the Global System for Mobile Telecommunications (GSM), the United States has adopted a variety of standards including Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), and Cellular Digital Packet Data (CDPD). For this discussion, the acronyms and the details behind these standards aren’t all that important, other than illustrating that each standard is different and incompatible with the other. In the United States, each wireless communication standard was developed by a competitive wireless carrier or network equipment provider, so each carrier pushed their own technology over the years.


PREVIEW

                                                                          

Not a subscriber?

Start A Free Trial


  
  • Creative Edge
  • Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint