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What is SIP? Simply explained

  • Oct 25, 2025
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In this practical tip we will explain what is SIP. First things first: SIP belongs to the Internet Protocol family. What's up with that, you will learn in the next section.

SIP: Session Initiation Protocol communications on the Internet

  • SIP stands for Session Initiation Protocol. It is a network Protocol.
  • Your Computer requires this log to with another Internet user, a communication connection to set up and control.
  • The Protocol of voice in practice, so often - and Video-Connections applied to it.
  • The participants of these Connections can be addressed via the Internet via your URL and DNS. What is a URL and what the DNS is, we explain them in separate practice tips.
SIP - what is it?
Set up your E-Mail account in Outlook or other mail programs, you will be asked often to IMAP and POP3. In the next practical tip learn, what are the differences between IMAP and POP3 are.

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