VoIP Anti blockage SIP softphone/Dialer ---- VGCommunicator
Fully SIP based PC softphone service.
Features:
- Supports branding with custom skin and logo
- Compatible with Windows 98/Me/2000/XP/2003/Vista
- NAT/Firewall traversal support
- Work with any 3rd party SIP Server
- SIP outbound proxy support
- Display caller account balance
- Display call credit time
- Embed Flash advertisements
- DTMF tones can be integrated with voice mail or other tone driven systems
- Multilanguage user interface
- Integration with customer website
- Voice Activity Detection
- Automatic Echo Cancellation
- Automatic jitter buffer adjustment
- Last number Redial
- History of 10 last dialed numbers
- Quick dial list
- Quick provision for customers, only user name and password required
- Auto software update
- VoiceGuard VoIP anti-blocking engine embedded, widely used in UAE , Asia & Africa ISP blocking VoIP market

And we provide customzation Softphone/Dialer service to the VoIP providers.
For more info, pls refer to http://www.speed-voip.com/vgcommunicator.html
Other members of VoiceGuard for VoIP anti-blocking as follows:
- VoiceGuard Standalone Client(VGSC) for Windows Perform encryption for any brands of ATA/Softphone, such as Linksys PAP2 & X-lite
- VoiceGuard Client SDK(VGSDK) - Incorporate voip anti-blocking capability into existing legacy softphone and dialer running on Windows(Softphone/Dialer customization service is also available with VGSDK)
- VoiceGuard SPE VoIP Adapter(VGSPE) VoIP anti-blocking ATA device which is available in 1 - 4 FXS & FXO ports
- VoiceGuard Border Controller(VGBC) Support any brands of ATA/Softphone for existing legacy ATAs, such as Linksys PAP2