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How to solve VoIP Blocking?
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11-13-07, 12:47 AM
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Poster Status: Normal
Member [Level I]
Join Date: Nov 2007
Posts: 19
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Topic/Thread# 70249, Post# 89524
Many of the VoIP Providers found that VPN based products are prohibited, too, in some countries. What should they do?
That is why more ane more customers are turning to use VoiceGuard@. VPN may be blocked because VPN use standard port such as PPTP 71, L2tp 73 or IPSec. However, VoiceGuard Control Protocol (VGCP) does not use fixed port either for TCP or UDP. VGCP controls and monitors full voice signaling and media flow intelligently, meanwhile disguises sip and rtp packets into normal allowed data packets such as DNS and TFTP, and makes two-way encryption and decryption driven by user-customized policy. For more information, pls contact me. MSN: qiaoyubo@hotmail.com Email: yb.qiao@speed-voip.com |
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