| All Categories |
Primers
VPN, Firewall, Security ... |
Guides
HowTo, Choosing a VPN ... |
Reference
Articles, FAQs, Whitepapers ... |
Standards
Architectures, Protocols ... |
Downloads
VPN, Firewall, Security ... |
Products & Services
Hardware, Software, Services |
| Organizations |
Business
Market Research, Law ... |
| Forums |
News
Archive, Events, Newsletters ... |
|
|
| |
| VPN labs is an open community for researching, testing, reviewing, and discussing Virtual Private Networks. Get trusted, unbiased advice on just about everything related to VPN. For more detail check: How to use this site. VPN Labs - VIRTUAL PRIVATE NETWORKS - Free VPN Software and Virtual Private Network News. |
|
|
|
|
speedvoip
Member since:
2008-12-08 19:23:26 |  posted: 2009-05-25 03:21:58
VoIP Anti-blocking
----------
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.
SpeedVoI
P 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/IPP
hone/IADs and SIP proxy
or server not like some
competitors which take
effect on their own
device and
softswitch.
※Sid
ePass
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.
※Traff
icDisturb
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/IPP
hone/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. How it works and
deployment
6.
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
7.
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
Mini
mal overhead and crystal
voice
quality
Easy-
to-use and
cost-effective
; Zero configuration
setup
Surpass
conventional VPN
scenario
Candy
Email:
candy@voicepassnet.com
MSN:
svoipsalesgold@hotmail.co
m
Website:www.voicepas
snet.com
www.voiceguardnet.com
www.speed-voip.com
(Th
is web may has been
blocked in some Middle
East area)
Technical
supporter Guru MSN:
jlsnmp@163.com
|
|
