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  2. GSM - Wikipedia

    en.wikipedia.org/wiki/GSM

    Thomas Haug (first GSM president) and Philippe Dupuis (second GSM president) during a GSM meeting in Belgium, April 1992. In 1983, work began to develop a European standard for digital cellular voice telecommunications when the European Conference of Postal and Telecommunications Administrations (CEPT) set up the Groupe Spécial Mobile (GSM) committee and later provided a permanent technical ...

  3. GSM services - Wikipedia

    en.wikipedia.org/wiki/GSM_services

    GSM services are a standard collection of applications and features available over the Global System for Mobile Communications (GSM) to mobile phone subscribers all over the world. The GSM standards are defined by the 3GPP collaboration and implemented in hardware and software by equipment manufacturers and mobile phone operators .

  4. Network switching subsystem - Wikipedia

    en.wikipedia.org/wiki/Network_switching_subsystem

    An encryption key is also generated that is subsequently used to encrypt all wireless communications (voice, SMS, etc.) between the mobile phone and the GSM core network. If the authentication fails, then no services are possible from that particular combination of SIM card and mobile phone operator attempted.

  5. Circuit Switched Data - Wikipedia

    en.wikipedia.org/wiki/Circuit_Switched_Data

    This is because the user of an HSCSD connection does not have to wait for permission from the network to send a packet. HSCSD is also an option in Enhanced Data Rates for GSM Evolution (EDGE) and Universal Mobile Telecommunications System (UMTS) systems where packet data transmission rates are much higher. In the UMTS system, the advantages of ...

  6. GSM frequency bands - Wikipedia

    en.wikipedia.org/wiki/GSM_frequency_bands

    GSM-1900 and GSM-850 are used in most of North, South and Central America (ITU-Region 2). In North America, GSM operates on the primary mobile communication bands 850 MHz and 1900 MHz. In Canada , GSM-1900 is the primary band used in urban areas with 850 as a backup, and GSM-850 being the primary rural band.

  7. GSMA - Wikipedia

    en.wikipedia.org/wiki/GSMA

    The GSM Association (commonly referred to as 'the GSMA' or Global System for Mobile Communications, originally Groupe Spécial Mobile) is a non-profit [1] industry organisation that represents the interests of mobile network operators worldwide. More than 750 mobile operators are full GSMA members and a further 400 companies in the broader ...

  8. Personal Communications Service - Wikipedia

    en.wikipedia.org/wiki/Personal_Communications...

    The comparable technology in the context of GSM is GSM-1800, also known as "Digital Cellular System" (DCS). [10] GSM-1800 launched in Hong Kong in 1997. It can form dual band service with GSM at 900MHz. This frequency was inherited into UMTS, LTE, and 5G NR. Korea, which has never used GSM, runs CDMA on 1800 MHz. See CDMA frequency bands.

  9. Intelligent Network - Wikipedia

    en.wikipedia.org/wiki/Intelligent_Network

    It is intended for fixed as well as mobile telecom networks. It allows operators to differentiate themselves by providing value-added services in addition to the standard telecom services such as PSTN, ISDN on fixed networks, and GSM services on mobile phones or other mobile devices.