An application for COVID-19 was installed on all smartphones

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An application for COVID-19 was installed in both Android and iOS mobile phones in their settings, following the update of the operating systems. On Android devices, go to “Settings” then “Google”, and you will find there the application “COVID-19 exposure … Read More

Two new smartphones from Google, Pixel and Pixel XL

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During a recent Made By Google event in San Francisco, Google unveiled the lauch of two new smartphones, in partnership with HTC. The launch of the smartphones is on October, 20. Google Pixel and Pixel XL were compared with the … Read More

Mobile commerce

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m-Commerce, or mobile commerce, is the use of wireless technology, especially mobile telephony, to make purchases. It includes all commercial applications related to mobile terminals and performed most often on the mobile. Mobile commerce is not limited to mobile phones … Read More

Cellular telephony

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A cell phone is a portable telephone which receives or sends messages through a Cell site, or transmitting tower. Radio waves are used to transfer signals to and from the cell phone. Each cell site has a range of 3-5 … Read More

Integrated services digital network

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Integrated Services Digital Network (ISDN) is a type of telephone network system. More specifically, ISDN is a set of protocols for establishing calls and then tearing them down. Consumer and Industry Perspectives There are two points of view into the … Read More

Call centers

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A call centre (UK) or call center (US) is a centralised office of a company that answers incoming telephone calls from customers. A call center may be an office that makes outgoing telephone calls to customers (telemarketing). Such an office … Read More

Public switched telephone networks

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The public switched telephone network (PSTN) is the concatenation of the world’s public circuit-switched telephone networks, in much the same way that the Internet is the concatenation of the world’s public IP-based packet-switched networks. Originally a network of fixed-line analog … Read More

Smartphones

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Share of 2010 Q1 smartphone shipments by operating system, by Gartner.[1] A smartphone is a mobile phone that offers more advanced computing ability and connectivity than a basic ‘feature phone’.[2] While some feature phones are able to run simple applications … Read More

Mobile phone history

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Mobile car phone, 1964 Mobile phones have existed at least since the 1950s, though the distinction becomes blurry when special systems are used to “patch” conventional Radiotelephones (2-way radio) into a phone network with the assistance of human operators. Modern … Read More

Cordless telephones & Wireless phone systems

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Cisco 7920 Wireless IP Phone Cordless telephones Cordless telephones consist of a base unit that connects to the land-line system and also communicates with remote handsets by low power radio. This permits use of the handset from any location within … Read More

Land-line based phone systems and fixed telephony

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Modern emergency telephone powered by sound alone. The network that connects most phones together is known as the PSTN (public switched telephone network). Fixed phone lines are usually copper wirelines which form a circuit between the subscriber and the exchange, … Read More

Phreaking

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Phreaking is a slang term for the action of making a telephone system do something that it normally should not allow. It is an illegal activity, but one formerly pursued by a large number of computer and electronics hobbyists out … Read More

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