Websites in SIP

1. BaseVoice
   Commercial software development company that produces PBX, router, proxy and application server software.
   http://www.basevoice.com
   
   
2. Brekeke Software
   Products for small to medium sized offices and a server database.
   http://www.brekeke.com/
   
   
3. Curibo
   German vendor offering hardware and software products.
   http://www.curibo.de/
   
   
4. Free IP Call
   A proxy service provider with information in English and French.
   http://www.freeipcall.com
   
   
5. Interactive Intelligence, Inc.
   Developers of a proxy server. Site contains downloads, documentation and a forum.
   http://www.inin.com/sipproxy
   
   
6. JustIT PBX
   A solid state hybrid PBX product combining PSTN telephony with Voice over IP.
   http://www.justit.ws/products/jpbx/index.html
   
   
7. Ninetel USA
   A USA based proxy service provider and supplier of hardware phones and routers. Site contains call rates and service details.
   http://www.ninetelusa.com
   
   
8. PC Phone Review
   News and reviews of hardware, software and service providers in the United States.
   http://www.pcphonereview.com
   
   
9. PROTOS Test Suite
   A test-suite to find vulnerabilities in protocol software.
   http://www.ee.oulu.fi/research/ouspg/protos/testing/c07/sip/
   
   
10. Parrish Systems
    Sells off the shelf code for SIP, SDP and RTP protocols and provides a software consultancy service
    http://www.parrishsys.com
    
    
11. SIP Compose Group
    A working group experimenting and documenting the protocol. Contains various internet technical resources.
    http://compose.labri.fr/documentation/sip/
    
    
12. SIP Forum
    A membership based forum. Also contains a news board.
    http://www.sipforum.org/
    
    
13. SIP Wiki
    Wiki based resource containing information and links.
    http://www.toyz.org/cgi-bin/sipwiki.cgi
    
    
14. SIP411 Directory Services
    A Yellow Pages style directory of SIP addresses.
    http://www.sip411.com
    
    
15. SIPquest Inc.
    Software component developer for service providers and telecom equipment vendors.
    http://www.sipquest.com/
    
    
16. Session Initiation Protocol (SIP)
    FAQs, background materials and lists of current work in this field.
    http://www.cs.columbia.edu/sip/
    
    
17. Sipcall
    A UK based service provider. Also contains hardware related links and protocol white-papers.
    http://www.sipcall.co.uk/
    
    
18. Soft Front
    Provides a development environment for software centered around SIP/VoIP technology.
    http://www.softfront.co.jp/en/
    
    
19. The SIP Center
    Portal with technical and market resources aimed at commercial developers. Also provides a testbed area for software and proxy development.
    http://www.sipcenter.com/
    
    
20. VoIP News
    Information on available technologies and software/hardware product reviews.
    http://www.voip-news.com
    
    
21. VoIP User
    Consumer guide and forum. Also has software phone downloads and links to service providers.
    http://www.voipuser.org
    
    
22. pulver.com
    A collection of information on the protocol. Contains news, reports and an IP telephony job noticeboard.
    http://www.pulver.com/
    
    

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