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Telecommunications

Communication Methods (voice, text, email)
Information Processing and Communication Networks - History - Technologies - Overview
Mobile Phone Technology
Long Distance Calls
Long Distance Data (Area Codes etc.)
Mobile Phones in products
Tablets and Smart Phones
Mobile Phone Service in services
Messaging services IM and SMS
Location and Mapping (GPS, ...)
Internet Phone Service (VoIP)
Telecom Digest and Archives at MIT
AT&T Archives: Telstar! - YouTube
Smart Phones
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Google Voice