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Founded Year



Unattributed VC | Alive

Total Raised


Last Raised

$6M | 17 yrs ago

About SIPphone

What is SIPnSIP is the most popular Voice over IP (VoIP) standard. SIP aims to enable two or more people to make phone calls to each other using the Internet to carry the call. By using the Internet, users gain some distinct advantages over traditional telephone calls or PSTN (Public Switched Telephone Network):nnCall quality: SIP calls on broadband are digital quality calls across the street or across the globe. nCost: SIP to SIP calls are always free and calls to old PSTN phones are very inexpensive with no taxes or monthly fees. nFeatures: Because SIP calls are part of the Internet users get great features like free voicemail to email and phone numbers from many places in the world no matter where users live. nWhat is SIPphonenSIPphone is a SIP service. The company combine all the elements necessary to provide a simple, super-inexpensive and high quality experience. The company work with the hardware manufacturers, the various service providers and even government agencies to make sure users have a positive experience. What do I need to use SIPphonenEither a hardware adapter or download the company's free softphone. nA broadband connection to the Internet nTo make free in-network (SIP to SIP) calls, both sides of the call must have a SIPphone adapter or softphone. nTo make super inexpensive calls to any of the billions of non-SIPphone (PSTN) world, users will need SIP minutes. nTo receive calls on their SIPphone from non-SIPphone (PSTN) phones, users need at least one Virtual Number

Headquarters Location

5960 Cornerstone Court West Suite 101

San Diego, California, 92121,

United States


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SIPphone Frequently Asked Questions (FAQ)

  • When was SIPphone founded?

    SIPphone was founded in 2003.

  • Where is SIPphone's headquarters?

    SIPphone's headquarters is located at 5960 Cornerstone Court West, San Diego.

  • What is SIPphone's latest funding round?

    SIPphone's latest funding round is Unattributed VC.

  • How much did SIPphone raise?

    SIPphone raised a total of $6M.

  • Who are the investors of SIPphone?

    Investors of SIPphone include Dawntreader Ventures.

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