Yealink MeetingSpace VC500, Administrator'S Manual

Page: 60 / 281

Administrator’s Guide for Yealink VC800&VC500 Video Conferencing System
44
Port Forwarding
The most common deployment scenario is deploying the VCS in an intranet (behind a firewall).
You must assign a static private IP address to the VCS. In the meantime, do Port forwarding on
the firewall.
Port forwarding is an application of network address translation (NAT) that redirects a
communication request from one address and port number combination to another while the
packets are traversing a network gateway, such as a router or firewall.
You must forward the following ports to the public network on the router or firewall.
Description Port Range Port Type
Gatekeeper 1719 UDP
H.323 Call setup 1720 TCP
Control and media for audio, video, content,
and data/FECC
50000-50049 TCP/UDP
Web management port (optional) 443 TCP
SIP (optional) 5060-5061 TCP/UDP
Static NAT
Many application-layer protocols, such as multimedia protocols (H.323/SIP) have address or
port information. The address and port information cannot be translated via the traditional NAT
method, which lead to communication problems.
ALG (application layer gateway) feature on the router/firewall can help translate address and
port of application-layer protocols. If your router does not support ALG (Application Level
Gateway) feature, you should configure port forwarding on your router first, and then enable
static NAT on your system to help H.323/SIP protocol traverse the firewall.
Note
Static NAT feature parameters on the system are described below:
Parameter Description Configuration Method
Static NAT
Specifies the static NAT type.

Disabled
—the system does not
use the NAT feature.

Manual
—the system uses the
manually configured NAT
Remote Control
Web User Interface
If H.460 firewall traversal is enabled on the system, the system will automatically ignore the static
NAT settings for H.323 calls. For more information on H.460 firewall traversal, refer to on
Enabling H.460 Support for H.323 Calls on page 52 .