Learn 2G - GSM
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  • Intro
  • Standards
    • Timeline
    • PCM30
    • PCM24
  • Architecture
    • ✅GSM Radio Stack
      • Layer 1 - Radio
      • Layer 2 - LAP-Dm
      • Layer 3 − GSM signalling
    • MS - Mobile Station
      • ME - Mobile Equipment
        • Baseband
      • SIM Card - Subscriber Identity Module
    • BSS - Base Station Subsystem
      • 🟢BTS - Base Transceiver Station
      • ✅BSC - Base Station Controller
    • NSS - Network Switching Subsystem
      • MSC - Mobile Switching Center
      • HLR - Home Location Register
      • VLR - Visitor Location Register
      • AuC - Authentication Center
      • EIR - Equipment Identity Register
      • VMS - Voice Mail Subsystem
      • IWF - Interworking Function
    • OSS - Operation Support Subsystem
      • OMC - Operation and Maintence Center
      • NMC - Network Managment Center
    • ABC - Administration & Billing Center
  • GSM Channels
    • Intro
    • Traffic Channels
      • TCH/F
      • TCH/H
    • Signalling Channels
      • Broadcast Channels
        • FCCH - Frequency Correction Channel
        • ✅SCH - Synchronization Channel
        • ✅BCCH - Broadcast Control Channel
        • ✅CBCH - Cell Broadcast Channel
      • Common Control Channels
        • Point-to-Multipoint Channels
          • PCH - Paging Channel
          • RACH - Random Access Channel
          • AGCH - Access Grant Channel
      • Dedicated Channels
        • ✅Point-To-Point Signalling
          • ✅SDCCH - Stand-alone Dedicated Control Channel
          • ✅SACCH - Slow Associated Control Channel
          • ✅FACCH - Fast Associated Control Channel
  • GSM Interfaces
    • ✅A interface
    • ✅A-ter interface
    • ✅A-bis interface
    • ✅Um interface
  • PLMN - Public Land Mobile Network
    • Cell Id
    • LAI - Location Area Identification
    • ARFCNs
  • System Information Messages
    • ✅System information-1(SI1)
    • ✅System information-2(SI2)
    • System information-2bis(SI-2bis)
    • System information-2ter(SI-2ter)
    • System information-2 Quarter (SI-2Quater)
    • ✅System information-3 (SI3)
    • System information-4 (SI4)
    • System information-5 (SI5)
    • System information-6 (SI6)
    • System information-7 (SI7)
    • System information-8 (SI8)
    • System information-9 (SI9)
    • System information-13 (SI13)
  • Docs
    • Page 2
  • Paging Requests
    • Paging request type 1
    • Paging request type 2
  • Messages for Mobility Management
    • Intro
    • ✅Registration messages
      • IMSI DETACH INDICATION
      • LOCATION UPDATING ACCEPT
      • LOCATION UPDATING REJECT
      • LOCATION UPDATING REQUEST
    • Security messages
    • Connection management messages
    • Miscellaneous message
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Intro

Dive into our comprehensive article discussing 2G - GSM technology, its history, impact and evolution. Explore how the 2G network revolutionized communication.

NextStandards

Last updated 6 months ago

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GSM (Global System for Mobile Communications) is a standard developed to describe protocols for second-generation (2G) digital cellular networks used by mobile phones.

It became the default global standard for mobile communications, ensuring interoperability of mobile devices across different regions.

GSM technology operates in various frequency bands, primarily 900/1800 MHz, and utilizes time division multiple access (TDMA) to divide each frequency channel into time slots.

This allows multiple users to share the same bandwidth efficiently. GSM supports voice calls, SMS, and limited data services, forming the backbone of modern mobile communication systems.

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