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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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Subway emergency telephone system

The purpose of the subway emergency response system is that when an emergency occurs in the subway, tourists can seek help from relevant staff in a timely manner. The entire communication system is a complete and independent communication system, and all telephone terminals can be managed and set through ip pbx software.
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Emergency call solution for campus

Safe campus "one-click" emergency alarm intercom system solution, to promote the development of security information technology in the education industry, the use of integrated communications command technology in campus security management, to achieve smart campus operations.
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Hotel VOIP telephone system

The hotel voip telephone system solution is designed to meet the daily telephone communication needs of the hotel (hotel room customer service, front desk call, call transfer, etc.), and integrate the phone with other services through IP voice technology.
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Top 4: best business office phones for business phone system

In 2020, KNTECH will provide you with good business phones and ip pbx business telephone system.
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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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