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Text over IP (or ToIP) is a means of providing a real-time text (RTT) service that operates over IP-based networks. [1] It complements Voice over IP and Video over IP. Real-time text is streaming text that is transmitted as it is produced, allowing text to be used conversationally. [2]
The Internet Protocol (IP) is the network layer communications protocol in the Internet protocol suite for relaying datagrams across network boundaries. Its routing function enables internetworking , and essentially establishes the Internet .
IP addresses are assigned to a host either dynamically as they join the network, or persistently by configuration of the host hardware or software. Persistent configuration is also known as using a static IP address. In contrast, when a computer's IP address is assigned each time it restarts, this is known as using a dynamic IP address.
The Internet protocol suite, commonly known as TCP/IP, is a framework for organizing the set of communication protocols used in the Internet and similar computer networks according to functional criteria.
SIP is a text-based protocol with syntax similar to that of HTTP. There are two different types of SIP messages: requests and responses. The first line of a request has a method, defining the nature of the request, and a Request-URI, indicating where the request should be sent. [19] The first line of a response has a response code.
Internet-layer protocols use IP-based packets. A common design aspect in the internet layer is the robustness principle : "Be liberal in what you accept, and conservative in what you send" [ 1 ] as a misbehaving host can deny Internet service to many other users.
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RCS has been designed as an industry open standard [2] [3] to provide improved capabilities over basic text messaging, based on the Internet Protocol (IP). Its development has also been supported by mobile network operators to regain their influence against individual OTT (over-the-top) chat apps and services. [4]