For political economic reasons, ISP may block VoIP in your country. To protect your VoIP business profit, SpeedVoIP Communication Technology Co., Ltd. is providing Security VoIP software solution, VGSC 2008, which installed on client side??s PC, and support your X-lite, Linksys PAP2 without any VoIP blocking.

Key Features:

Maximum call completion rate and maximum voice service duration
SIP core standards and a variety of drafts supported
Proprietary link layer protocol for controlling
Any 3rd-party Softphone/ATA/Gateway/IPPhone/IAD and SIP Proxy/Registrar/SBC supported
The most comprehensive codec including g.711/g.723/g.729ab/iLBC/gsm/speechX supported
Bypassing Narus and Verso platform detection
Flexible user-customized encryption policy driven
Strict call path protection and security up to termination
Only simultaneous signaling/media/T.38 fax packet support across any firewall.
No network or firewall modification is required.
Excellent voice quality without any latency and performance compromise
Available on all major platforms.