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What is a proxy server?

There are two types of SIP proxy servers: 1) Stateless proxy server: A simple forwarding function that selects the destination and route of forwarding by requesting information. Messages are discarded as soon as they are forwarded. 2) Stateful proxy server: records incoming requests and sent request information (especially transaction status) and uses this to control future message processing. It also has a fork function for messages.
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How to choose ip ratings for telephone, ip 66 or ip 67?

We will tell you what is the ratings of protection of the telephone, how to test the ratings of protection of the telephone, how to choose the right ratings of protection telephone.
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ip phone systems

The ip telephone system is a modern, telephone communication system based on the ip network and the Internet Voice Protocol (VOIP).
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School pa system

The school paging system is a pa system integrating emergency voice communication and public broadcasting, specially designed by KNTECH communication experts.
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Voip telephone system

The Voip telephone system is a modern telephone system that transmits and compresses communication signals in the form of data packets over an ip network.
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How to setup a voip phone

Now, VoIP phones are increasingly popular with homes, industries, offices, and businesses. VoIP phone, the call quality is stable and completely free, the media is rich in functions and easy to manage. How to set up a voip phone? I will tell you one by one.
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