Yealink VC110 Admin Manual page 57

11. Press (Complete soft key) to complete the setup wizard.
If you use Network Address Translation (NAT) to assign a public IP address to your

VC110 endpoint for communication with devices outside your private network, you
must enable NAT on your VC110 endpoint before placing calls. For more
information, refer to
If your VC110 endpoint communicates with other devices through a firewall, you

must configure your firewall to allow incoming and outgoing traffic to theVC110
endpoint through the reserved ports specified in
the required ports specified in
NAT on page 75. Users placing calls through a firewall to endpoints may
experience one-way audio or video if the firewall is not properly configured.
If you are using Session Initiation Protocol (SIP) servers in your environment to place

calls using the SIP protocol, refer to
If you are using H.323 gatekeepers in your environment and want to place calls

using a name or extension with the H.323 protocol, refer to
Settings on page 105.
Yealink Demo1 to Yealink Demo3 are three default contacts stored in the local directory.
You can place a test call to the default contact, and the test call will be routed to the
Yealink demo video conferencing endpoint. Yealink demo contacts can help users to
test quickly whether the endpoint is normal after installation.
Network Address Translation
Configuring the Endpoint for Use with a Firewall or
Configuring SIP Settings
Getting Started
on page 78.
Reserved Ports on page 75. And
on page 99.
Configuring H.323
47