But session initiation protocol (SIP), voice-over-internet-protocol (VoIP), unified communication (UC) and other acronyms can be confusing, especially since many people use them interchangeably.

Terms, such as voice-over-internet-protocol (VoIP) caller and session initiation protocol (SIP) trunking are common, but many businesses don’t know what they really mean. Let Forbes Advisor help ...

Here’s how to make free SIP calls — and when you shouldn’t. Session Initiation Protocol (SIP) allows one device to find another and establish a connection over the internet. It’s a ...

By bridging the gap between the technology designed for the PSTN (Public Switched Telephone Network) and modern digital communications like VoIP (Voice over Internet Protocol), SIP trunking ...

The number that identifies Internet packets as voice over IP (VoIP) calls based on the SIP protocol. For more secure connections that employ TLS, port 5061 is used. See SIP and TLS. THIS ...