VoIP Technology and Protocol Overview (Windows CE 5.0)

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This section provides a brief introduction to VoIP concepts and to the protocols used by many IP phones, including those built using the VoIP technology in Windows CE.

The IP phone technology in Windows CE uses industry-standard protocols and telephony concepts.

In This Section

  • Circuit-Switched Networks
    Introduces the telephony concepts of signaling and media transport and explains how traditional analog telephone networks implement this functionality.
  • Voice over IP Networks
    Explains how IP phones and VoIP networks operate and how their implementation of signaling and media transport differs from that of an analog telephone network.
  • Session Initiation Protocol and SIP Servers
    Provides an overview of Session Initiation Protocol (SIP), the industry-standard protocol used for signaling in VoIP networks. Also briefly discusses the different types of common SIP server functionality on a VoIP network.
  • Real-time Transport Protocol
    Describes how VoIP networks transfer audio (and other media) between IP phones using the industry-standard Real-time Transport Protocol (RTP).
  • Gateway Servers in VoIP Networks
    Explains briefly how gateway servers can enable IP phones to interact with analog phones on a traditional telephone network.

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