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SIP Protocol: Wie funktioniert SIP Telefonie?

SIP Protocol: How does SIP telephony work?

There are three different types of telephone connections that can be used for Internet telephony with the SIP protocol:

  • Analog
  • ISDN
  • VoIP

All you need to set up VoIP is a router and Internet access. SIP telephony works by logging on via the public Internet (Internet telephony) or by logging on via a dedicated IP line outside the Internet (IP telephony).

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