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  2. Comparison of mobile phone standards - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_mobile_phone...

    Cellular network standards and generation timeline. This is a comparison of standards of wireless networking technologies for devices such as mobile phones.A new generation of cellular standards has appeared approximately every tenth year since 1G systems were introduced in 1979 and the early to mid-1980s.

  3. Grammage - Wikipedia

    en.wikipedia.org/wiki/Grammage

    It is often notated as gsm on paper product labels and spec sheets. Expressed in terms of the mass per number of sheets of a specific paper size (known as basis weight ). The convention used in the United States and a few other countries using US-standard paper sizes is pounds (lb) per ream of 500 (or in some cases 1000) sheets of a given (raw ...

  4. Full Rate - Wikipedia

    en.wikipedia.org/wiki/Full_Rate

    Full Rate (FR), also known as GSM-FR or GSM 06.10 (sometimes simply GSM), was the first digital speech coding standard used in the GSM digital mobile phone system. It uses linear predictive coding (LPC). The bit rate of the codec is 13 kbit/s, or 1.625 bits/audio sample (often padded out to 33 bytes/20 ms or 13.2 kbit/s).

  5. Enhanced full rate - Wikipedia

    en.wikipedia.org/wiki/Enhanced_full_rate

    Enhanced Full Rate or EFR or GSM-EFR or GSM 06.60 is a speech coding standard that was developed in order to improve the quality of GSM. Enhanced Full Rate was developed by Nokia and the Université de Sherbrooke (Canada). In 1995, ETSI selected the Enhanced Full Rate voice codec as the industry standard codec for GSM/DCS. [1]

  6. Ounce - Wikipedia

    en.wikipedia.org/wiki/Ounce

    A troy ounce (abbreviated oz t) is equal to 480 grains. Consequently, the international troy ounce is equal to exactly 31.1034768 grams. There are 12 troy ounces in the now obsolete troy pound. Today, the troy ounce is used only to express the mass of precious metals such as gold, platinum, palladium, rhodium or silver.

  7. Comparison of the imperial and US customary measurement ...

    en.wikipedia.org/wiki/Comparison_of_the_imperial...

    fluid ounces Imperial fluid ounce (fl oz) ≡ 1 imp fl oz. ≈ 0.960 759 940 40 US fl oz ≈ 0.947 102 083 33 US fl oz (food) ≡ 28.413 0625 mL ≡ 0.028 413 0625 L. US fluid ounce (customary) (fl oz) ≈ 1.040 842 730 79 imp fl oz. ≡ 1 US fl oz ≡ 0.985 784 318 75 US fl oz (food) ≡ 29.573 529 5625 mL ≡ 0.029 573 529 5625 L. US fluid ounce

  8. General Packet Radio Service - Wikipedia

    en.wikipedia.org/wiki/General_Packet_Radio_Service

    GSM-900 and GSM-1800 are used in: Europe, Middle East, Africa and most of Asia. In South Americas these bands are used in Costa Rica (GSM-1800), Brazil (GSM-850, 900 and 1800), Guatemala (GSM-850, GSM-900 and 1900), El Salvador (GSM-850, GSM-900 and 1900). There is a more comprehensive record of international cellular service frequency assignments

  9. Circuit Switched Data - Wikipedia

    en.wikipedia.org/wiki/Circuit_Switched_Data

    Enhanced Data Rates for GSM Evolution (EDGE) (E-GPRS) and Universal Mobile Telecommunications System (UMTS) provide improved radio interfaces with higher data rates, while still being backward compatible with the GSM core network. Enhanced Circuit Switched Data (ECSD) was developed alongside GPRS/EDGE [2]