Yealink VC880 - Meet Now and Virtual Meeting Rooms

| Traditional Deployment Methods | 48
The system will send SIP message using the mapped IP address and the port.
Note:
STUN does not enable the incoming TCP connections through NAT, so H.323 is not supported. And
STUN does not support the incoming UDP packets through symmetric NATs.
• Configuring STUN
• Enabling STUN Feature for SIP Protocol
Configuring STUN
Procedure
1. Do one of the following:
• On your web user interface, go to Network > NAT/Firewall > STUN Config.
• On your VCS:
On your VC880/VC800/VC500/PVT980/PVT950, go to More > Setting > Advanced > NAT/Firewall
> STUN Config.
On your VC200, go to More > Network > Wired Network > NAT/Firewall > STUN Config.
On your VP59, tap Setting > Advanced > NAT/Firewall > STUN Config.
• On your CTP20, tap Setting > Advanced > NAT/Firewall > STUN Config.
2. Configure and save the following settings:
Parameter Description Configuration Method
Active/STUN Active
Enable or disable the STUN
(Simple Traversal of UDP over
NATs) feature on the system.
Default: Off.
Web user interface
Endpoint
CTP20
STUN Server
Configure the IP address or
the domain name of the STUN
(Simple Traversal of UDP over
NATs) server.
Note: the default value is blank.
Web user interface
Endpoint
CTP20