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VoiceGuard™ Solution for VoIP Anti-Blockade

VoiceGuard™ Solution for VoIP Anti-Blockade   

1. Overview

Yahoo messenger, Skype, Microsoft Messenger and Vonage offer a subscriber the ability to "call" someone using Softphone/Gateway ATA/IPPhone/IAD. However, several ISPs are blocking or degrading this service in order to force a consumer to use a ISP sponsored service. States such as the UAE block this technology outright while US corporations, such as Clearwire, claim that they might degrade the quality of competing services by adding choppy and delayed services.

SpeedVoIP is a leader in circumventing VoIP blocking imposed by ISP or Telco. For vision of Net Neutrality, VoiceGuard™ is created to address a growing number of ISPs who either degrade or block voice services over their networks. VoiceGuard™ gives choice back to the subscribers or customers of ITSP.

2. Technology

?VGCP(Voice Guard Control Protocol)

VGCP is a proprietary layer 2 link protocol working at between IP stack and nic driver for VoIP anti-blocking. The core patent-pending VGCP is industrys most state-of-the-art voice service provider class security protocol whose scalability and flexibility results in not to compromise voice quality and overhead. VGCP controls and monitors full voice signaling and media flow intelligently, meanwhile disguises sip and rtp packets into normal allowed data packets such as DNS and TFTP, and makes two-way encryption and decryption driven by user-customized policy. VGCP is fully transparent to upper SIP proxy or UA which means VoiceGuard™ can work with any 3rd-party Softphone/ATA/Gateway/IPPhone/IADs and SIP proxy or server not like some competitors which take effect on their own device and softswitch.

?SidePass

Due to unique architecture, when deploying VoiceGuard™ Border Controller(VGBC) at customer CPE side, VGBC can work in the way similar to that of soho router, but it only encrypts and decrypts SIP and RTP packets on link layer, not to handup these packets to IP stack for forwarding while bypassing other data packets originating from SIP terminals. In this scenario, peak throughput and minimal CPU overhead can be easily achieved.

?TrafficDisturb

Current leading carrier-class VoIP blocking platform such as NarusInsight can detect VoIP traffic with a special algorithmtraffic classification in the dark which filters VoIP traffic based on behavioral-signature model. Compared with previous one of payload-signature model, NarusInsight is more sophisticated and robust. After deep study into traffic behavior of SIP UA, Proxy and Registrar, VoiceGuard™ can real-time incorporate light-weight traffic for puzzling and bypassing VoIP blocking system without consuming more bandwidth and compromising voice quality. Even in some circumstance, VoiceGuard™ can simulate traffic behavior of universal data networking protocol such as OICQ, MSN and so on.

3. 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

Small footprint terminal SDK .

Available on all major platforms.

4. Technical Specification

•UDP

• TCP

• RTP/RTCP

• T.38 Fax

• SIP - RFC3261~3266

•STUN - RFC3489

•Symmetric Response - RFC3581

 Dns/Tftp/Radius wrapper

5. VoiceGuard™ Products ( Hardware and Software Option)

• 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
• VoiceGuard™ Communicator (VGCommunicator) – Fully SIP compatible Softphone/Dialer for PC2Phone and PC2PC services

 

6. VoicePass™ Service Plan for Residential and Business User

 

VoicePass™ is new kind of service specially for bypassing VoIP blocking imposed by ISP for residential and business user. It allows subscriber to use VoIP freely in blockage region such as Middle East and Africa without compromising of voice quality. Outgoing and incoming call is always available dependent upon what ITSP or service provider supplies. With VoicePass™ subscription, zero configuration setup is at your finger. What you do only is to enjoy cheap VoIP rate and crystal voice. 24x7 support assures communication anytime and anywhere.

 

Key benefits:

 

      Work with any ITSP and service provider

      Minimal overhead and crystal voice quality

      Easy-to-use and cost-effective

      Zero configuration setup

       Surpass conventional VPN scenario

cindy
SpeedVoIP Communication Technology Co.,Ltd

Skype: svoipsalessilver
Yahoo: svoipsilver

 

About the Author

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