A major aspect of VoIP technology is SIP and SIP trunking. In this post, we are going to tell you what SIP is and how it relates to SIP trunking. We are also going to discribe how SIP trunking works and show you the difference between hosted PBX and non-hosted PBX SIP trunking.
What is SIP?
What Does SIP Stand For?
So what is SIP? SIP stands for Session Initiation Protocol, and that’s exactly what it is. It’s a type of protocol that initiates a session over the Internet.