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outdoor_station:feature_guides:how_to_configure_stun_in_r2x [2019/04/30 17:38]
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-====== How to configure STUN in R2x ====== 
-====  1.What is STUN ==== 
-<ff sans-serif><​fs medium>​STUN (Session Traversal Utilities for NAT )is a standardized set of methods, including a network protocol, for traversal of network address translator (NAT) gateways in applications of real-time voice, video, messaging, and other interactive communications. \\ \\  
-STUN is a tool used by other protocols, such as Interactive Connectivity Establishment (ICE), the Session Initiation Protocol (SIP), or WebRTC. It provides a tool for hosts to discover the presence of a network address translator, and to discover the mapped, usually public, Internet Protocol (IP) address and port number that the NAT has allocated for the application'​s User Datagram Protocol (UDP) flows to remote hosts. The protocol requires assistance from a third-party network server (STUN server) located on the opposing (public) side of the NAT, usually the public Internet. \\ </​fs></​ff>​ 
-==== 2. How STUN work in R2X: ==== 
-\\ <ff sans-serif><​fs medium>​The testing environment is as below:</​fs></​ff>​ 
-\\ {{ :​1.outdoor_station:​feature_guides:​outdoor_stun_1.png?​nolink&​650* |STUN}} 
-==== 3. How to configure:​==== ​ 
-\\ <ff sans-serif><​fs medium>​Go to **Account - Basic - NAT** to configure the STUN server address of intercom A&B to the IP address of laptop A, which is</​fs></​ff>​ 
-\\ {{ :​1.outdoor_station:​feature_guides:​outdoor_stun_2.png?​nolink&​650* |STUN}} 
-==== 4. How it work:​==== ​ 
-\\ <ff sans-serif><​fs medium>​**Mode 1:** If users disabled the NAT, when intercom A make a call to intercom B through SIP accounts, B pick up the call, B can hear what A talks but A can not hear what B talks, and after B hang up the call, A will not hang up the call. 
-\\ {{ :​1.outdoor_station:​feature_guides:​outdoor_stun_3.png?​nolink&​650* |STUN}} 
-\\ **Mode 2:** If users configure the NAT to be STUN, when intercom A make a call to intercom B through SIP accounts, B pick up the call, they can **<fc #​ff0000>​communicate normally</​fc>​**. 
-\\ So users need to configure like **Mode 2** when need to enable the stun feature.</​fs></​ff>​