Product Name: VoiceGuard Solution 4 VoIP Anti blockage
Price: US$
Detail: ISP blocking VoIP termination server in UAE, Africa, South America & Asia, and you can't receive calls from worldwide. VoiceGuard?is versatile and powerful VoIP anti-blocking solution for VoIP wholesaler which can protect call completion and lead to maximum service duration while prevent revenue leakage for VoIP business, which can work with any 3rd-party SIP proxy and termination server.

The following options you may choose:
VoiceGuard?Border Controller(VGBC) ?hardware, support any 3rd party VoIP Gateways, *****: Quintum Media Gateway
VoiceGuard?SPE ATA(VGSPE) ?Model VGSPE 1.1pro, include 1 FXS & 1 FXO port
VoiceGuard?Standalone Client(VGSC) for Windows ?software

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 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.

For more information, pls review: *****