What does "SIP" stand for in the context of 3CX?

In the context of 3CX and VoIP (Voice over Internet Protocol) communications, "SIP" stands for Session Initiation Protocol. This is a signaling protocol used for initiating, maintaining, and terminating real-time communication sessions that involve video, voice, messaging, and other multimedia in an IP-based environment. SIP is essential in setting up and managing voice calls, as it establishes the parameters of the session, negotiates media types, and provides a means for participants to join or leave the conversation.

Understanding SIP is crucial for the functionality of 3CX since it directly impacts how calls are managed, routed, and controlled within the system. The use of SIP allows for interoperability with various devices and platforms, making it a cornerstone of modern telecommunications solutions. Hence, knowledge of SIP is vital for anyone working with or managing a 3CX phone system.