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Cellular Digital Packet Data (CDPD) is an obsolete wide-area mobile data service which used unused bandwidth normally used by Advanced Mobile Phone System (AMPS) mobile phones between 800 and 900 MHz to transfer data. Speeds up to 19.2 kbit/s were possible, though real world speeds seldom reached higher than 9.6 kbit/s. The service was discontinued in conjunction with the retirement of the parent AMPS service; it has been functionally replaced by faster services such as 1xRTT, Evolution-Data Optimized, and UMTS/High Speed Packet Access (HSPA).
A personal communications service (PCS) is set of communications capabilities that provide a combination of terminal mobility, personal mobility, and service profile management. This class of services comprises several types of wireless voice or wireless data communications systems, typically incorporating digital technology, providing services similar to advanced cellular mobile or paging services. In addition, PCS can also be used to provide other wireless communications services, including services that allow people to place and receive communications while away from their home or office, as well as wireless communications to homes, office buildings and other fixed locations. Described in more commercial terms, PCS is a generation of wireless cellular-phone technology, that combines a range of features and services surpassing those available in analogue- and first-generation (2G) digital-cellular phone systems, providing a user with an all-in-one wireless phone, paging, messaging, and data service.
T-Mobile is the brand name used by some of the mobile communications subsidiaries of the German telecommunications company Deutsche Telekom AG in the Czech Republic, Poland and the United States.
Integrated Digital Enhanced Network (iDEN) is a mobile telecommunications technology, developed by Motorola, which provides its users the benefits of a trunked radio and a cellular telephone. It was called the first mobile social network by many technology industry analysts. iDEN places more users in a given spectral space, compared to analog cellular and two-way radio systems, by using speech compression and time-division multiple access (TDMA).
BellSouth, LLC was an American telecommunications holding company based in Atlanta, Georgia. BellSouth was one of the seven original Regional Bell Operating Companies after the U.S. Department of Justice forced the American Telephone & Telegraph Company to divest itself of its regional telephone companies on January 1, 1984.
AT&T Mobility, LLC, also known as AT&T Wireless and marketed as simply AT&T, is an American telecommunications company. It is a wholly owned subsidiary of AT&T Inc. and provides wireless services in the United States. AT&T Mobility is the second largest wireless carrier in the United States, with 114.5 million subscribers as of March 31, 2024.
Mobitex is an OSI based open standard, national public access wireless packet-switched data network. Mobitex puts great emphasis on safety and reliability with its use by military, police, firefighters and ambulance services. It was developed in the beginning of the 1980s by the Swedish Televerket Radio. From 1988, the development took place in Eritel, a joint-venture between Ericsson and Televerket, later on as an Ericsson subsidiary. Mobitex became operational in Sweden in 1986.
BellSouth Mobility, LLC headquartered in Atlanta, Georgia, was a BellSouth subsidiary.
Sprint Corporation was an American telecommunications company. Before being acquired by T-Mobile US on April 1, 2020, it was the fourth-largest mobile network operator in the United States, serving 54.3 million customers as of June 30, 2019. The company also offered wireless voice, messaging, and broadband services through its various subsidiaries under the Boost Mobile and Open Mobile brands and wholesale access to its wireless networks to mobile virtual network operators.
DataTAC is a wireless data network technology originally developed by Mobile Data International which was later acquired by Motorola, who jointly developed it with IBM and deployed in the United States as ARDIS. DataTAC was also marketed in the mid-1990s as MobileData by Telecom Australia, and is still used by Bell Mobility as a paging network in Canada. The first public open and mobile data network using MDI DataTAC was found in Hong Kong as Hutchison Mobile Data Limited, where public end-to-end data services are provided for enterprises, FedEx, and consumer mobile information services were also offered called MobileQuotes with financial information, news, telebetting and stock data.
Leap Wireless International, Inc. was a telecommunications operator that provided wireless services to approximately 4.6 million subscribers, the 5th largest, through its subsidiary, Cricket Communications, Inc.. It was headquartered in San Diego, California. Leap Wireless and Cricket Wireless are now subsidiaries of AT&T.
Embarq Corporation was the largest independent local exchange carrier in the United States, serving customers in 18 states and providing local, long-distance, high-speed data and wireless services to residential and business customers. It had been formerly the local telephone division (LTD) of Sprint Nextel until 2006, when it was spun off as an independent company. Embarq produced more than $6 billion in revenues annually, and had approximately 18,000 employees. It was based in Overland Park, Kansas.
Clearwire Corporation was a telecommunications operator which provided mobile and fixed wireless broadband communications services to retail and wholesale customers in the United States, Belgium, Ireland and Spain. Clearwire traces its roots to 1998, when Sierra Technologies, Inc., spun off certain assets to form a new company, Clearwire Technologies Inc. In October 2003, Craig McCaw purchased Clearwire Technologies, Inc. parent company Clearwire Holdings and moved the company headquarters to Kirkland, Washington. In 2012, Clearwire moved the company headquarters to Bellevue, Washington.
RAM Mobile Data was founded by RAM Broadcasting Corporation as American Mobile Data Communications, Inc. in 1988. The name of the company was changed to Ram Mobile Data in 1989. RAM Mobile Data was the U.S. Operator of the Mobitex network.
Advanced Wireless Services (AWS) is a wireless telecommunications spectrum band used for mobile voice and data services, video, and messaging. AWS is used in the United States, Argentina, Canada, Colombia, Mexico, Chile, Paraguay, Peru, Ecuador, Trinidad and Tobago, Uruguay and Venezuela. It replaces some of the spectrum formerly allocated to Multipoint Multichannel Distribution Service (MMDS), sometimes referred to as Wireless Cable, that existed from 2150 to 2162 MHz.
PowerSource, or "hybrid" phones, are specialized cellular devices used by customers of the American telecommunications company Sprint-Nextel. They are distinct from other mobile phones in that they make use of two cellular networks instead of a single one.
NII Holdings, Inc. was an American holding company that, through its subsidiary Nextel Telecomunicações Ltda., provided mobile communications services under the Nextel brand in Latin America. NII last operated 3G UMTS/HSDPA and 4G LTE networks in Brazil, and also operated an iDEN network there until its shutdown in 2018.
Nextel Communications, Inc. was an American wireless service operator that merged with and ceased to exist as a subsidiary of Sprint Corporation, which would later be bought by T-Mobile US and folded into that company. Nextel in Brazil, and formerly in Argentina, Chile, Peru, the Philippines, and Mexico, is part of NII Holdings, a stand-alone, publicly traded company not owned by Sprint Corporation.
DISH Wireless L.L.C., doing business as Boost Mobile, is a United States wireless service provider owned by EchoStar. It operates using the Boost, AT&T and T-Mobile networks to deliver wireless services. As of Q3 2023, Boost Mobile, along with its sister brands Gen Mobile and Ting Mobile had 7.50 million customers.
References
- ↑ Nairn, Geoffrey (2005-06-29). "Learning the lessons of 9/11". FT.com. Retrieved 2012-03-13.
- ↑ "Sprint Newsroom | News Releases". Newsreleases.sprint.com. Retrieved 2012-03-13.
- ↑ "Free wireless credit card terminal". visamachine.com. Retrieved 2013-08-20.
- ↑ "Velocita Wireless, United Wireless Merge Operations". Phone Scoop. 2007-07-02. Retrieved 2012-03-13.