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    SIPphone

    Last Updated May 24, 2021 2:03 pm
    Vangie Beal
    Written by Vangie Beal

    Based on SIP (Session Initiated Protocol) a SIPphone is a SIP service that provides a free SIP-based VoIP network. To use SIPphone you need either a SIPphone adapter or softphone software and a broadband Internet connection.  To make free in-network (SIP to SIP) calls, both sides of the call must have a SIPphone adapter or softphone. To make inexpensive calls to non-SIPphones (PSTN), you will need SIP minutes.

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    Vangie Beal
    About the author About the author arrow
    Vangie Beal

    Vangie Beal is a freelance business and technology writer covering Internet technologies and online business since the late '90s.

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