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Telephone cards --- Telephone --- Consumer protection --- Law and legislation
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Telephone --- Local telephone service --- Telephone systems --- Consumer protection --- Law and legislation --- Government policy --- United States. --- Rules and practice.
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Abstract: Practical methods for making laboratory measurements of electroacoustic characteristics of analog and digital telephones, handsets, and headsets are presented. The methods may also be applicable to a wide variety of other communications equipment, including cordless, wireless, and mobile communications devices. Measurement results may be used to evaluate these devices on a standardized basis. Application is in the frequency range from 100 Hz to 8500 Hz. Keywords: analog telephones, digital telephones, electroacoustic measurements on telephones, handsets, headsets, IEEE 269, IEEE 269a, telephony, voice transmission performance.
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Discover what is involved in designing the world's most popular and advanced consumer product to date - the phone in your pocket. With this essential guide you will learn how the dynamics of the market, and the pace of technology innovation, constantly create new opportunities which design teams utilize to develop new products that delight and surprise us. Explore core technology building blocks, such as chipsets and software components, and see how these components are built together through the design lifecycle to create unique handset designs. Learn key design principles to reduce design time and cost, and best practice guidelines to maximize opportunities to create a successful product. A range of real-world case studies are included to illustrate key insights. Finally, emerging trends in the handset industry are identified, and the global impact those trends could have on future devices is discussed.
Cell phones --- Design and construction. --- Engineering --- General and Others --- Telephone
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Telemarketing --- Telephone selling --- Cell phone systems --- Law and legislation
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Rural telephone --- Broadband communication systems --- Telecommunication --- Finance. --- Subsidies
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Caller ID telephone service --- False personation --- Law and legislation --- Prevention.
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This book is written in an easy-to-read style, with a strong emphasis on real-world, practical examples. Step-by-step explanations are provided for performing important administration tasks. If you are Cisco Unified Communications administrators or engineers looking forward for advanced recipes to perform important administration tasks, then this is the best guide for you. This book assumes familiarity with the basics of Cisco's Unified Communications Manager architecture.
Internet telephony. --- Internet-based telephony --- Internet phone --- Internet telephone --- IP telephony --- Voice over IP networks --- Telephone systems
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Telephone --- Rural telephone --- Telecommunication --- Signal theory (Telecommunication) --- Signaling system 7. --- Law and legislation --- Switching systems. --- United States. --- Rules and practice.
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