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  • Radavision
  • www.radvision.com
  • SIP, 3G-324M, H.323 stacks and testing tools for VoIP vendors.
3.7
(si*)
<5
5
  • Packetizer
  • www.packetizer.com
  • Technical information about VoIP and videoconferencing.
3.6
(si*)
-
5
3.5
(si*)
-
3
  • IP xStream
  • www.iptelephony.org
  • IP Telephony data source. Includes VoIP vendor directory.
3.4
(si*)
-
4
  • IP Telephony
  • www.telephony-voip.net
  • Resource blog for VoIP technology from a former IT tech.
3.3
(si*)
-
2
  • TheVoipGuide.org
  • www.thevoipguide.org
  • Online VoIP technology guide. Includes forum and speed test.
3.2
(si*)
-
3
  • Voice Systems Research, Inc.
  • www.vsrusa.com
  • Provides unified messaging, voice mail, advanced call routing, and IP-based telephony solutions.
3.2
(si*)
-
4
  • VOIP Telephone Systems
  • www.voiptelephonesystem.org
  • Resource, technical information and services for VOIP telephone systems and installation.
3.2
(si*)
-
3
  • VoIPFAQ
  • www.voipfaq.net
  • A online guide to VoIP for the home user. Includes various types of VoIP setups.
3.1
(si*)
-
2
  • NetYak
  • www.netyak.com
  • Web-to-phone call button for e-commerce.
3.1
(si*)
-
3
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