gsm module block diagram - Wikitechy https://www.wikitechy.com/interview-questions/tag/gsm-module-block-diagram/ Interview Questions Wed, 08 Sep 2021 04:53:17 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://www.wikitechy.com/interview-questions/wp-content/uploads/2025/10/cropped-wikitechy-icon-32x32.png gsm module block diagram - Wikitechy https://www.wikitechy.com/interview-questions/tag/gsm-module-block-diagram/ 32 32 What is the type of current used by GSM Telecom Equipment ? https://www.wikitechy.com/interview-questions/electronics-communications-engineering/what-is-the-type-of-current-used-by-gsm-telecom-equipment/ https://www.wikitechy.com/interview-questions/electronics-communications-engineering/what-is-the-type-of-current-used-by-gsm-telecom-equipment/#respond Thu, 05 Aug 2021 05:31:13 +0000 https://www.wikitechy.com/interview-questions/?p=1417
  • Current used in GSM telecom equipment is DC current.

Explanation:

  • Logic is very simple. AC can’t be stored and DC can be stored.
  • Example : Mobile is a GSM device in which DC is used to charge the batteries.

What is GSM ?

  • GSM (Global System for Mobile Communications) is a second-generation digital mobile telephone standard using a variation of Time Division Multiple Access (TDMA).
  • It is used for three digital wireless telephone technologies such as CDMA (Code Division Multiple Access), GSM and TDMA.
  • GSM digitizes and compresses voice data, then sends it down a channel with two other streams of user data, each in its particular time slot.
  • It works at either the 900, 1800 or 1,900MHz frequency bands.
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