Basics of IP Networks
The choice of Internet Protocol (IP) for the backbone of the next generation networks has defined the DNA of IP Multimedia Subsystem (IMS). It signals a departure from closed networks and often proprietary, to open interconnected networks. IP has become the ubiquitous non-proprietary protocol suite, which is being used to communicate across any set of interconnected networks and is equally well suited for Local Area Network (LAN) and Wide Area Network (WAN) communications. While IP networks are engineered as WANs and LANs, access to the Internet as we use it today is administered by an access model. With this contrary approach to the telecom networks, a subscriber pays a fee to the Internet Service Provider (ISP) ...
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