Internet TCP port 5050 is commonly used by multimedia communication protocols such as Session Initiation Protocol (SIP) and Yahoo! Messenger. SIP is a signaling protocol used for initiating, maintaining, modifying and terminating real-time sessions that involve video, voice, messaging and other communications applications and services between two or more endpoints on IP networks. Yahoo! Messenger also used this port for instant messaging and file transfer. However, it's important to note that the use of port 5050 can vary depending on the specific software configuration and network setup.
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