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Happy learning...
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Telecom's Technical Abbreviations


After so many chapters, I just thought to pen down all the abbreviations in one post which were used in last few chapters:
  • FDMA: Frequency division multiple access
  • CDMA: Code division multiple access
  • TDMA: Time division multiple access
  • NNS: Network Management Subsystem
  • BSS: Base Station Subsystem
  • NSS: Network Switching Subsystem
  • BTS: Base transceiver stations
  • BS: Base Station
  • AUC: Authentication Centre
  • OSS: Operation and Support System
  • MXE: Message Center
  • MISN: Mobile Intelligent Service Node
  • MSC: Mobile Switching Centre
  • HLR: Home location register
  • AuC:  Authentication centre
  • VLR: Visitor location register
  • EIR: Equipment Identity Register
  • BC: Billing centre
  • SMSC: Short message service centre
  • MMSC: Multimedia messaging service centre
  • VMS: Voicemail system
  • BSC: Base Station Controller:
  • PCU: Packet control unit
  • MS : Mobile station (a mobile phone)
  • PSTN: Public Switched Telephone Network

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