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  2. List of telephone switches - Wikipedia

    en.wikipedia.org/wiki/List_of_telephone_switches

    19 EFAR TELEKOM. 20 Fujitsu. 21 Great Dragon Telecom (GDT) 22 GEC. 23 Hasler. 24 Hitachi. 25 Huawei. 26 Hyundai Electronics Industries. 27 Indian Telephone Industries ...

  3. Deutsche Telekom - Wikipedia

    en.wikipedia.org/wiki/Deutsche_Telekom

    Deutsche Telekom AG (German pronunciation: [ˌdɔʏtʃə ˈteːləkɔm ʔaːˌɡeː] ⓘ, lit. ' German Telecom '; often just Telekom, DTAG or DT; stylised as ·T·) is a partially state-owned German telecommunications company headquartered in Bonn and the largest telecommunications provider in Europe by revenue.

  4. List of telecommunications companies - Wikipedia

    en.wikipedia.org/wiki/List_of_telecommunications...

    A1 Telekom Austria Group: $5.2 [62 ... currency conversions for 2019-2022 revenues are based on the closing currency exchange rate on the last day of 2019-2022 ...

  5. T-Systems - Wikipedia

    en.wikipedia.org/wiki/T-Systems

    T-Systems was founded in 2000, when Deutsche Telekom acquired a 50.1% stake of debis Systemhaus, one of the largest IT services companies in Germany at the time. Most of Deutsche Telekom's existing service and IT businesses were then merged and incorporated under the control of one single company, the newly founded T-Systems.

  6. T-Mobile (brand) - Wikipedia

    en.wikipedia.org/wiki/T-Mobile_(brand)

    T-Mobile is the brand name used by some of the mobile communications subsidiaries of the German telecommunications company Deutsche Telekom AG in the Czech Republic (T-Mobile Czech Republic), Poland (T-Mobile Polska) and the United States (T-Mobile US).

  7. T-Mobile - Wikipedia

    en.wikipedia.org/wiki/T-Mobile

    T-Mobile is the brand of telecommunications by Deutsche Telekom. T-Mobile may also refer to: Deutsche Telekom's current and former subsidiaries. T-Mobile US, an American wireless network operator known simply as "T-Mobile" T-Mobile Polska, a Polish mobile phone network operator; T-Mobile Czech Republic, a Czech wireless network operator

  8. Business Process Framework (eTOM) - Wikipedia

    en.wikipedia.org/wiki/Business_Process_Framework...

    The model describes the required business processes of service providers and defines key elements and how they should interact. The Business Process Framework (eTOM) is a standard maintained by the TM Forum , [ 1 ] an association for service providers and their suppliers in the telecommunications and entertainment industries.

  9. List of mobile network operators in Europe - Wikipedia

    en.wikipedia.org/wiki/List_of_mobile_network...

    As of March 2022, Italy has 106.5 million active lines in total, or a 174% penetration rate. [73] The country's telecom regulator is AGCOM . In 2016 Wind and 3 Italy agreed to complete a merger that was approved by European and national authorities, and since March 2020 all consumer and business offers are sold under the new brand WINDTRE .