Port 5060 is a TCP port used by the Session Initiation Protocol (SIP). SIP is a signaling protocol used to establish, maintain, and terminate real-time sessions, such as voice and video calls. Port 5060 is the default port for SIP traffic, and it is used by many SIP-based applications, such as softphones and IP PBXs.
Port 5060 is important because it allows SIP-based applications to communicate with each other. Without port 5060, SIP traffic would not be able to flow between devices, and real-time sessions would not be possible. Port 5060 has been in use for many years, and it is a well-established standard in the VoIP industry.