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2. General Packet Radio Service - Wikipedia

   en.wikipedia.org/wiki/General_Packet_Radio_Service

   GSM module or GPRS modules are similar to modems, but there's one difference: the modem is an external piece of equipment, whereas the GSM module or GPRS module can be integrated within an electrical or electronic equipment. It is an embedded piece of hardware. A GSM mobile, on the other hand, is a complete embedded system in itself.

3. Comparison of mobile phone standards - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_mobile_phone...

   GSM: Digital: 1991 Worldwide, all countries except Japan and South Korea SIM card: Some electronics, e.g. amplifiers Good coverage indoors on 850/900 MHz. Repeaters possible. 35 km hard limit. Very low density Hard Yes GPRS Class A 2G: CDMA: IS-95 (CDMA one) Digital: 1995 Limited None None Unlimited cell size, low transmitter power permits ...

4. GPRS core network - Wikipedia

   en.wikipedia.org/wiki/GPRS_core_network

   GPRS Tunnelling Protocol is the defining IP-based protocol of the GPRS core network. Primarily it is the protocol which allows end users of a GSM or WCDMA network to move from place to place while continuing to connect to the Internet as if from one location at the Gateway GPRS support node (GGSN).

5. List of wireless network protocols - Wikipedia

   en.wikipedia.org/wiki/List_of_wireless_network...

   Typical 2G standards include GSM and IS-95 with extensions via GPRS, EDGE and 1xRTT, providing Internet access to users of originally voice centric 2G networks. Both EDGE and 1xRTT are 3G standards, as defined by the ITU , but are usually marketed as 2.9G due to their comparatively low speeds and high delays when compared to true 3G technologies.

6. Short Message Service technical realisation (GSM) - Wikipedia

   en.wikipedia.org/wiki/Short_Message_Service...

   When the subscriber sends a Short Message, the handset sends the text message over the air interface to the Mobile Switching Center (MSC)/Serving GPRS Support Node (SGSN). Along with the actual text of the Short Message, the destination address of the SM and the address of the Short Message service center (SMSC) are included, the latter taken ...

7. 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 ...

8. Base station subsystem - Wikipedia

   en.wikipedia.org/wiki/Base_station_subsystem

   Image of the GSM network, showing the BSS interfaces to the MS, NSS and GPRS Core Network Um The air interface between the mobile station (MS) and the BTS. This interface uses LAPDm protocol for signaling, to conduct call control, measurement reporting, handover, power control, authentication, authorization, location update and so on. Traffic ...

9. Circuit Switched Data - Wikipedia

   en.wikipedia.org/wiki/Circuit_Switched_Data

   This makes HSCSD relatively expensive in many GSM networks and is one of the reasons that packet-switched General Packet Radio Service (GPRS), which typically has lower pricing (based on amount of data transferred rather than the duration of the connection), has become more common than HSCSD.