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  2. Network switching subsystem - Wikipedia

    en.wikipedia.org/wiki/Network_switching_subsystem

    Network switching subsystem (NSS) (or GSM core network) is the component of a GSM system that carries out call out and mobility management functions for mobile phones roaming on the network of base stations.

  3. 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 ...

  4. Mobility management - Wikipedia

    en.wikipedia.org/wiki/Mobility_management

    Roaming is one of the fundamental mobility management procedures of all cellular networks.Roaming is defined [2] as the ability for a cellular customer to automatically make and receive voice calls, send and receive data, or access other services, including home data services, when travelling outside the geographical coverage area of the home network, by means of using a visited network.

  5. GPRS core network - Wikipedia

    en.wikipedia.org/wiki/GPRS_core_network

    The GPRS system is an integrated part of the GSM network switching subsystem. The network provides mobility management, session management and transport for IP packet services in GSM and WCDMA networks. The core network also provides support for other functions such as billing and lawful interception.

  6. Mobile Application Part - Wikipedia

    en.wikipedia.org/wiki/Mobile_Application_Part

    The Mobile Application Part specifications were originally defined by the GSM Association, but are now controlled by ETSI/3GPP. MAP is defined by two different standards, depending upon the mobile network type: MAP for GSM (prior to Release 4) is specified by 3GPP TS 09.02 (MAP v1, MAP v2)

  7. GSM services - Wikipedia

    en.wikipedia.org/wiki/GSM_services

    This GSM service estimates the call cost for display on the user's mobile phone. [1] This helps users by preventing bill shock [2] and reduces the load on the mobile network operator's customer service department. However, in practice, this GSM service is rarely used because the calculation is more complex than the standard allows.

  8. Telecommunications Management Network - Wikipedia

    en.wikipedia.org/wiki/Telecommunications...

    The Telecommunications Management Network is a protocol model defined by ITU-T for managing open systems in a communications network. It is part of the ITU-T Recommendation series M.3000 and is based on the OSI management specifications in ITU-T Recommendation series X.700.

  9. GSM procedures - Wikipedia

    en.wikipedia.org/wiki/GSM_procedures

    GSM procedures are sets of steps performed by the GSM network and devices on it in order for the network to function.GSM (Global System for Mobile Communications) is a set of standards for cell phone networks established by the European Telecommunications Standards Institute and first used in 1991.