Advanced Mobile Phone System (AMPS) was an analog mobile phone system standard originally developed by Bell Labs and later modified in a cooperative effort between Bell Labs and Motorola. It was officially introduced in the Americas on October 13, 1983, and was deployed in many other countries too, including Israel in 1986, Australia in 1987, Singapore in 1988, and Pakistan in 1990. It was the primary analog mobile phone system in North America through the 1980s and into the 2000s. As of February 18, 2008, carriers in the United States were no longer required to support AMPS and companies such as AT&T and Verizon Communications have discontinued this service permanently. AMPS was discontinued in Australia in September 2000, in Pakistan by October 2004, in Israel by January 2010, and Brazil by 2010.
Extensive telecommunication facilities exist in Switzerland. They include the telephone system, internet, and broadcast media.
A telephone is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be easily heard directly. A telephone converts sound, typically and most efficiently the human voice, into electronic signals that are transmitted via cables and other communication channels to another telephone which reproduces the sound to the receiving user. The term is derived from Greek: τῆλε and φωνή, together meaning distant voice. A common short form of the term is phone, which came into use early in the telephone's history.
Telephony is the field of technology involving the development, application, and deployment of telecommunication services for the purpose of electronic transmission of voice, fax, or data, between distant parties. The history of telephony is intimately linked to the invention and development of the telephone.
2G is short notation for second-generation cellular network, a group of technology standards employed for cellular networks. 2G was comercially launched on the GSM standard in Finland by Radiolinja in 1991. After 2G was launched, the previous mobile wireless network systems were retroactively dubbed 1G. While radio signals on 1G networks are analog, radio signals on 2G networks are digital, though both systems use digital signaling to connect cellular radio towers to the rest of the mobile network system.
SK Telecom Co., Ltd. is a South Korean wireless telecommunications operator and is part of the SK Group, one of the country's largest chaebols. It leads the local market with 50.5 percent share as of 2008. SK Telecom is the largest wireless carrier in South Korea, with 27.019 million subscribers as of Q4 2017.
Swisscom AG is a major telecommunications provider in Switzerland. Its headquarters are located in Ittigen near Bern. The Swiss government owns 51.0 percent of Swisscom AG. According to its own published data, Swisscom holds a market share of 56% for mobile, 50% for broadband and 37% for TV telecommunication in Switzerland. Its Italian subsidiary Fastweb is attributed 16% of private clients and 29% of corporate clients share of Italian broadband and is also active in the mobile market.
KPN is a Dutch landline and mobile telecommunications company. KPN originated from a government-run postal, telegraph and telephone service and is based in Rotterdam, Netherlands.
A cellular network or mobile network is a communication network where the link to and from end nodes is wireless. The network is distributed over land areas called "cells", each served by at least one fixed-location transceiver. These base stations provide the cell with the network coverage which can be used for transmission of voice, data, and other types of content. A cell typically uses a different set of frequencies from neighboring cells, to avoid interference and provide guaranteed service quality within each cell.
1G refers to the first generation of wireless cellular technology. These are analog mobile telecommunications standards that were introduced in the 1980s and were superseded by 2G. The main difference between these two mobile cellular generations is that the audio transmissions of 1G networks were analog, while 2G networks were entirely digital.
The history of mobile phones covers mobile communication devices that connect wirelessly to the public switched telephone network.
A naked DSL, also known as standalone or dry loop DSL, is a digital subscriber line (DSL) without a PSTN service — or the associated dial tone. In other words, only a standalone DSL Internet service is provided on the local loop.
Fastweb S.p.A. is an Italian telecommunications company that provides fixed and mobile telephony, broadband Internet and IPTV services. Fastweb is also one of the prominent companies in Italy providing FTTH connections. Fastweb is fully owned by the Swiss telecommunication company Swisscom.
Telephone numbers in Switzerland are defined and assigned according to the Swiss telephone numbering plan administered by the Swiss Federal Office of Communications. The plan has been changed several times and the most recent reorganization was implemented in March 2002.
The Radio Telephone Network C, was a first generation analog cellular phone system deployed and operated in Germany by DeTeMobil. It utilized the C-450 standard, originally developed by Siemens AG, and was the third and last update of a series of analog mobile phone systems used primarily within Germany, superseding the B-Netz and the A-Netz before it. It has been decommissioned, replaced by both the newer D-Netz and E-Netz systems, both based on GSM standards and operating on 900 MHz and 1800 MHz bands respectively.
The Internet in Switzerland has one of the highest penetration rates in Europe.
UPC was the largest cable operator in Switzerland with around 1.1 million residential and business customers and was formed in 1994 through the merger of several cable operators. UPC has been a subsidiary of Liberty Global since 2005.
Sunrise UPC GmbH, doing business as Sunrise, is a Swiss telecommunications provider based in Zurich, owned by Liberty Global. It provides mobile, TV and landline phone and internet services. Since February 2019, Sunrise headquarters are located at Thurgauerstrasse 101b, Glattpark Opfikon. Formerly a subsidiary of TDC A/S, Sunrise had been owned by CVC Capital Partners until 2015. In February 2015, CVC realised an IPO on the SIX Swiss Exchange. Since then, Sunrise stocks are publicly traded at the Swiss Stock Exchange. In August 2020, Liberty Global announced that it will be acquiring Sunrise for $7.4 billion. The transaction was completed on November 11, 2020.
Telecommunication is the transmission of information by various types of technologies over wire, radio, optical, or other electromagnetic systems. It has its origin in the desire of humans for communication over a distance greater than that feasible with the human voice, but with a similar scale of expediency; thus, slow systems are excluded from the field.
The PTT Archive is the archive of the former Swiss Postal, Telegraph and Telephone Services (PTT). In 1997 the PTT was divided up into the companies of the Swiss Post and the Swisscom Ltd. On behalf of these two public limited companies, the PTT Archive is being operated by the Swiss Foundation for the History of the Post and Telecommunications. By obligation of Swiss archival law, the Swiss Post Ltd. and the Swisscom Ltd., being the successors of the PTT, are bound to preserve these archival holdings and make them accessible to the public. The PTT Archive is situated in Köniz near Bern and is classified as an object of national interest in the Swiss Inventory of Cultural Assets.
