Internet Telephone Basics explains how and why people and companies are changing to Internet Telephone Service. Learn how much money can be saved using Internet telephone service and how you can to use standard telephones and dial the same way while having more control over your telephone service. You will learn why Internet telephone service usually costs 1.5 to 4 cents per minute for domestic long distance calls and 3 to 10 cents per minute for International calls. It describes how to activate Internettelephone service instantly and how to display your call detail bills in real time. Covered are the advanced features and services such as amazing call routing control (intelligent call forwarding), unified messaging (email and voice mail) that can be accessed by telephones or the web, and multimedia communication that allows the simultaneous sending of voice, data, and video through the Internet during your calls. Most important, this book explains why All Internet Telephone Service is Not the Same and defines the cost and quality tradeoffs that you can make.
Included is an overview of the basics of how Internet telephone service works including converting voice to data signals, the digitization process and how data compression affects your voice quality. Explained are the ways you can keep your telephone number when you sign up for Internet telephone service.
This book explains how you can save even more money (possibly calling for free) by calling directly to other Internet (IP) telephones. Explained are the key ways used to find each other and directly connect on the Internet including using instant messaging screen names, telephone numbers on the web (called ENUM), and connecting using URL web addresses.
The different types of Internet telephones are described including web telephones, telephone headsets, IP telephones, and adapter boxes that create dialtone for standard telephones. You will learn about the types of Internet connections that can be used for Internet telephone service including dial-up connections, broadband connections (cable modem, DSL, wireless), and leased line connections and how to setup and optimize your Internet connection.
Find out about the quality of service (QoS), security, and reliability you can expect from Internet telephone service and some of the ways you can ensure you get toll quality service. Discover the potential challenges of Internet telephone service along with solutions. These problems include difficulty with location based emergency services(such as 911), electrical power supply, and feature interaction. Brief descriptions of the leading Industry standards are included such as H.323, Session Initiated Protocol (SIP), and Media Gateway Control Protocol (MGCP) will help you ensure that your equipment will work with the ITSP you select.
Described are the basic steps on how to get started including how to get and test a good Internet connection, select and setup service with an ITSP, and which Internet telephone access device may be best suited for your needs. Included is a glossary of key terms and lists of ITSPs and equipment manufacturers to help you get started. Это и многое другое вы найдете в книге Internet Telephone Basics: How to Select, Setup, Use and Optimize Telephone Service through the Internet (Lawrence Harte)
