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List of telephone switches This list of telephone switches is a compilation of telephone switches used in the public switched telephone network (PSTN) or in large enterprises.
NEC Corporation (日本電気株式会社, Nippon Denki Kabushiki gaisha, an acronym for the Nippon Electric Company) is a Japanese multinational information technology and electronics corporation, headquartered at the NEC Supertower in Minato, Tokyo, Japan. [4] It provides IT and network solutions, including cloud computing, artificial intelligence (AI), Internet of Things (IoT) platform, and ...
The e616 takes Lithium ion batteries, which are available in different capacities: 780 mA·h standard battery (always included) tested standby time in 3G network : 6–12 h depending on use of the phone. 1360 mA·h high capacity battery (sometimes included) tested standby time in 3G network : 12–24 h depending on use of the phone.
NEC Mobile Communications was a mobile phone manufacturer established 1 May 2010. It started as a joint venture among three Japanese electronics manufacturers NEC, Casio and Hitachi, where NEC owned 70.74%, Casio 20.00% and Hitachi 9.26%. [1]
Wireless network technologies. Mobile radio telephone systems were mobile telephony systems that preceded modern cellular network technology. Since they were the predecessors of the first generation of cellular telephones, these systems are sometimes retroactively referred to as pre-cellular (or sometimes zero generation, that is, 0G) systems.
A business telephone system differs from an installation of several telephones with multiple central office (CO) lines in that the CO lines used are directly controllable in key telephone systems from multiple telephone stations, and that such a system often provides additional features for call handling. Business telephone systems are often broadly classified into key telephone systems and ...
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.
Country calling codes, country dial-in codes, international subscriber dialing ( ISD) codes, or most commonly, telephone country codes are telephone number prefixes for reaching telephone subscribers in foreign countries or areas via international telecommunication networks. Country codes are defined by the International Telecommunication Union (ITU) in ITU-T standards E.123 and E.164. The ...