GSM

Circuit-Switching and Packet-Switching in mobile networks

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Circuit-switching and packet-switching techniques have been part of the telecommunication industry for a very long time. The concept of packet-switched telecom networks had been developed even before the first generation (1G) of mobile networks was introduced. However, mobile networks started with circuit-switched techniques in the early 1990s and gradually moved towards packet-switching. Circuit-Switching is used […]

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How are AMPS and D-AMPS different from GSM and CDMA?

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AMPS and D-AMPS are cellular technologies that existed during the first and second generations of mobile networks. While second-generation (2G) cellular technologies still exist today, both AMPS and D-AMPS are now obsolete and have been replaced by GSM and CDMA mobile networks. AMPS was a first-generation (1G) cellular technology, and D-AMPS was a second-generation (2G)

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IMEI 1 and IMEI 2: Why my phone has two IMEI numbers?

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IMEI or International Mobile Equipment Identity is one of the many unique identifiers associated with mobile phones. While other identifiers like IMSI, MSISDN and ICCID are linked to the SIM card, IMEI is connected to the mobile device itself. With the increasing trend of having the eSIM capability within mobile phones, it is becoming common

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What is the difference between GSM, UMTS and LTE?

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GSM, UMTS and LTE are three mobile communications technologies that provide cellular connectivity to a large number of mobile networks across the globe. While GSM and UMTS started their journey primarily in Europe, they are now the leading mobile communications technologies worldwide alongside LTE. GSM, UMTS and LTE are cellular technologies that enable second (2G),

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Mobile telecom acronyms and abbreviations with definitions

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The real challenge with acronyms is that knowing what a certain term stands for isn’t enough. You also need a simple explanation to understand what the term actually means. For example, the acronym LTE stands for Long Term Evolution, but the next logical question is “evolution of what?”. This is where a simple explanation like

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