Editing Advanced Mobile Phone System (section)

==Analog AMPS being replaced by digital==
In 2002, the FCC decided to no longer require A and B carriers to support AMPS service as of February 18, 2008. All AMPS carriers have converted to a digital standard such as CDMA2000 or GSM. Digital technologies such as GSM and CDMA2000 support multiple voice calls on the same channel and offer enhanced features such as two-way text messaging and data services.

Unlike in the United States, the [[Canadian Radio-television and Telecommunications Commission]] (CRTC) and [[Industry Canada]] have not set any requirement for maintaining AMPS service in Canada. [[Rogers Wireless]] has dismantled their AMPS (along with [[IS-136]]) network; the networks were shut down May 31, 2007. [[Bell Mobility]] and [[Telus Mobility]], who operated AMPS networks in Canada, announced that they would observe the same timetable as outlined by the FCC in the United States, and as a result would not begin to dismantle their AMPS networks until after February 2008.<ref name="sptnews">{{cite web|url=http://www.sptnews.ca/index.php?option=com_content&task=view&id=238&Itemid=9 |title=SP&T News |publisher=Sptnews.ca |date=September 21, 2013 |access-date=September 28, 2013}}</ref>

[[OnStar]] relied heavily on North American AMPS service for its subscribers because, when the system was developed, AMPS offered the most comprehensive wireless coverage in the US. In 2006, [[ADT Security Services|ADT]] asked the FCC to extend the AMPS deadline due to many of their alarm systems still using analog technology to communicate with the control centers.<ref name="ITWorld">[http://wireless.itworld.com/4279/061004adt/page_1.html ITWorld] {{webarchive |url=https://web.archive.org/web/20061016114055/http://wireless.itworld.com/4279/061004adt/page_1.html |date=October 16, 2006 }}</ref> Cellular companies who own an A or B license (such as Verizon and Alltel) were required to provide analog service until February 18, 2008. After that point, however, most cellular companies were eager to shut down AMPS and use the remaining channels for digital services. [[OnStar]] transitioned to digital service with the help of data transport technology developed by Airbiquity, but warned customers who could not be upgraded to digital service that their service would permanently expire on January 1, 2008.<ref name="OnStar">{{Cite web |title=Helpful Info {{!}} Analog-to-Digital Transition |url=http://www.onstar.com/us_english/jsp/explore/onstar_basics/helpful_info.jsp?info-view=tech_equip |url-status=dead |archive-url=https://web.archive.org/web/20071011215630/http://www.onstar.com/us_english/jsp/explore/onstar_basics/helpful_info.jsp?info-view=tech_equip |archive-date=October 11, 2007 |website=OnStar}}</ref>