Software:
Also we have core technology for VoIP anti-blocking solutions.
Attached is the Brochure of my VoIP anti-blocking solution.

Here I'm glad to introduce our core technology solution which is Voice Guard Control Protocol.
Compared with VPN, VGCP has such advantages:
1. VGCP isn't blocked, because it does not use fixed port either for TCP or UDP.While VPN use standard port so it is blocked easily.
2. VoiceGuard solution is a proprietary layer 2 link protocol,it's a class security protocol whose scalability and flexibility results in not to compromise voice quality and overhead.
3. VoiceGuard for anti-blocking can work with any 3rd party: gateway/IAD/ATA/Softphone/IPphone and so on. That means you can use any existing ATA e.g.: Linksys PAP2, and add our VGBC for anti-blocking, then you can make call from PC2Phone. Our VG plug-in can work with any SIP Server like VPS.
4. VoiceGuard don't like some competitors which take effect on their own device and softswitch.
5. Voice Guard can solve VoIP termination blocking issue by make two-way encryption, simulate traffic behavior of universal data working protocol such as OICQ, MSN and so on.

Lynn
SpeedVoIP Communication Technology Co.,Ltd

Tel: +86 755 25504959
Fax: +86 755 25336159
Email: lynn@speed-voip.com
MSN: svoipsales@hotmail.com
Skype: svoipsales
Yahoo: speedvoip@yahoo.com
Website: SpeedVoIP - VoIP Blocking, VPN, Encryption, SIP Adapter, ATA, Gateway