SpeedVoIP Debuts [url=http://www.speed-voip.com/vgclientsdkcomparison.html
]VoIP Anti-Blocking.[/url]
VoiceGuard™ is versatile and powerful VoIP anti-blocking solution for ITSP and VoIP Reseller which can protect call completion and lead to maximum service duration while prevent revenue leakage for ITSP, which can work with any 3rd-party SIP proxy or server.
VoiceGuard™ VoIP Adapter (VGSPE) for security & anti-blocking function, available in 1-, 2-, 4-port FXS & FXO models

Key Benefits:

Minimal Overhead and High Call Quality
Easy to Use and Cost-effective
Any 3rd party SIP proxy/Registrar/SBC supported
Support termination server blockade

For more inform, pls review: http://www.speed-voip.com

Lynn
MSN: svoipsales@hotmail.com
Skype: svoipsales