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Polkomtel Sp. z o.o. Plus (formerly Plus GSM) is the brand name of Poland 's mobile phone network operator, Polkomtel Sp. z o.o. The company is entirely owned by Cyfrowy Polsat S.A. and is part of Grupa Polsat Plus. It operates GSM (900/1800 MHz), UMTS, LTE, 5G NR (2600 MHz TDD) and WLAN networks in Poland. It was founded in 1995.
Voice over Internet Protocol (VoIP), [a] also called IP telephony, is a method and group of technologies for voice calls for the delivery of voice communication sessions over Internet Protocol (IP) networks, [2] such as the Internet. The broader terms Internet telephony, broadband telephony, and broadband phone service specifically refer to the ...
This is a list of international dialing prefixes used in various countries for direct dialing of international telephone calls.These prefixes are typically required only when dialling from a landline, while in GSM-compliant mobile phone (cell phone) systems, only the symbol + before the country code may be used [citation needed] irrespective of where the telephone is used at that moment; the ...
Category 5 cable that is partially stripped and showing its four twisted pairs (eight wires) Category 5 cable (Cat 5) is a twisted pair cable for computer networks. Since 2001, the variant commonly in use is the Category 5e specification (Cat 5e). The cable standard provides performance of up to 100 MHz and is suitable for most varieties of ...
Videotelephony became even more widespread through the deployment of video-enabled mobile phones such as 2010s iPhone 4, plus videoconferencing and computer webcams which use Internet telephony. In the upper echelons of government, business, and commerce, telepresence technology , an advanced form of videoconferencing, has helped reduce the ...
Digi Communications N.V., also known as DIGI Group, is a Romanian telecommunications holding company, which also has businesses in Spain, Italy, Portugal and Belgium. The firm has current statutory seat in the Netherlands and headquarters of effective management in Romania. Digi was founded by Zoltán Teszári, who is the majority shareholder ...
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