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This is a comparison of mobile operating systems. Only the latest versions are shown in the table below, even though older versions may still be marketed. Only the latest versions are shown in the table below, even though older versions may still be marketed.
A feature phone (also spelled featurephone) is a type or class of mobile phone that retains the form factor of earlier generations of mobile telephones, typically with press-button based inputs and a small non-touch display. They tend to use an embedded operating system with a small and simple graphical user interface, unlike large and complex ...
A business telephone system is a telephone system typically used in business environments, encompassing the range of technology from the key telephone system ( KTS) to the private branch exchange ( PBX ). A business telephone system differs from an installation of several telephones with multiple central office (CO) lines in that the CO lines ...
Mobile phone feature. Hardware-side view of a typical smartphone. A mobile phone feature is a capability, service, or application that a mobile phone offers to its users. Mobile phones are often referred to as feature phones, and offer basic telephony. [clarification needed] Handsets with more advanced computing ability through the use of ...
A mobile phone (or cellphone [a]) is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area, as opposed to a fixed-location phone ( landline phone ). The radio frequency link establishes a connection to the switching systems of a mobile phone operator, which ...
Nortel T7316 Telephone, compatible with newer BCM and older Norstar systems. The Nortel Norstar, previously the Meridian Norstar, was a small and medium-sized business digital key telephone system introduced by Nortel (formerly Northern Telecom) and later sold to Avaya. It featured automatic call distribution, and supported up to 192 extensions.
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