Explain GSM ? Interview question

Wireless Interview question
GSM (Global System for Mobile Communications)
  • Most popular standard for mobile telephony systems, originated from Groupe Special Mobile
  • The ubiquity of GSM enables the international roaming arrangements among mobile phone operators.
  • Both signaling and speech channels are digital, and thus GSM is considered as 2G mobile phone system.
  • GSM standard benefited customers the ability to roam and switch carriers without replacing the hand sets and network operators.
  • GSM implements low-cost implementation of Short Message Service

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