| VCS Deployment Methods |
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Related tasks
Intelligent Traversal
Some branch offices lack IT professionals, which means that professional network configuration (for example, the
port forwarding) may be impossible. To solve this issue, Intelligent Traversal allows you to simply deploy your VCS
in the intranet, and assign an IP address to VCS, which can be used to access the public network. After that you can
place calls to the VCS in the public network via your intranet VCS.
Although this method is not applicable to the incoming calls.
•
Audio & Video Intelligent Traversal
•
Audio & Video Intelligent Traversal
When a VCS in the intranet calls the VCS in the public network, the audio & video streams send by the VCS in the
intranet may carry the intranet IP addresses, as a result, the VCS in the public network fails to send the audio& video
streams to the VCS in the intranet. Besides, the problem of one-way audio or video and no image of the VCS in the
public network may occurs to the VCS in the intranet. The above problems can be solved by the feature of audio &
video intelligent traversal.
This feature allows the VCS in the public network to check the media source address and the port of incoming RTP
packets, and then send the RTP packets back to the address where the incoming RTP packet comes from rather than
the address provided in the Session Description Protocol (SDP).
The following example illustrates a scenario about using the audio & video intelligent traversal:
The VCS A locates in the intranet with the feature of audio & video intelligent traversal enabled, and the router does
not support the ALG feature. The VCS B locates in the public network. A calls B, and then A sends the RTP packets
to the B.
• If B disables the audio & video intelligent traversal feature, B will send RTP data to the negotiated IP address of A
(private IP address provided in the Session Description Protocol), as a result, A may see black screen.
• If B enables the audio & video intelligent traversal feature, B sends back RTP packets to the address where
incoming RTP packet comes from. A and B can communicate normally.
•
Configuring Audio & Video Intelligent Traversal
Configuring Audio & Video Intelligent Traversal
Procedure
1.
On your web user interface, go to
Network
>
NAT/Firewall
>
Intelligent Firewall Traversal
>
Audio & Video
Intelligent Traversal
.
2.
Configure and save the following settings:
Parameter
Description
Configuration Method
Audio & Video Intelligent
Traversal
Enable or disable the audio &
video media stream to traverse
firewall.
Default
: On.
Web user interface
Data Intelligent Traversal
When VCS in the Intranet calls the VCS in the public network, the VCS in the Intranet may fail to receive data (for
example: PC content and FECC protocol) from the public network. You can use data intelligent traversal to solve
these problems.
