The Leading Operator of Cellular Telecommunication Services"Telkomsel"
Telkomsel is the leading operator of cellular telecommunications services in Indonesia by market share. By the end of March 2007, Telkomsel had 38,9 million customers which based on industry statistics represented a market share of around 55%.
Telkomsel provides GSM cellula...
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High-Speed Downlink Packet Access"HSDPA"
High-Speed Downlink Packet Access (HSDPA) is a 3G (third generation) mobile telephony communications protocol in the High-Speed Packet Access (HSPA) family, which allows networks based on Universal Mobile Telecommunications System (UMTS) to have higher data transfer speeds a...
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Umbul Narmadi
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Wi-Fi
Wi-Fi is a wireless technology brand owned by the Wi-Fi Alliance intended to improve the interoperability of wireless local area network products based on the IEEE 802.11 standards. Common applications for Wi-Fi include Internet and VoIP phone access, gaming, and network con...
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General Packet Radio Service "GPRS"
General Packet Radio Service (GPRS) is a Mobile Data Service available to users of Global System for Mobile Communications (GSM) and IS-136 mobile phones. It provides data rates from 56 up to 114 Kbps.
GPRS data transfer is typically charged per kilobyte of transferred data...
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A Very Small Aperture Terminal (VSAT)
A Very Small Aperture Terminal (VSAT), is a two-way satellite ground station with a dish antenna that is smaller than 3 meters (most VSAT antennas range from 75 cm to 1.2 m). VSAT data rates typically range from narrowband up to 4 Mbit/s. VSATs access satellites in geosynchr...
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Voice over Internet Protocol "VOIP"
Voice over Internet Protocol (VoIP) is a protocol optimized for the transmission of voice through the Internet or other packet switched networks. VoIP is often used abstractly to refer to the actual transmission of voice (rather than the protocol implementing it). VoIP is al...
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Hi my name is Umbul Narmadi, I was born in Kebumen of central java, Indonesia. This is my personal blog which is focus related to 
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