Yealink VCM34 - Page 64

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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).
Default: Disabled.
Web user interface
Endpoint
CTP20/CTP18
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/CTP18
STUN Port
Configure the port of the STUN
(Simple Traversal of UDP over
NATs) server.
Default: 3478.
Web user interface
Endpoint
CTP20/CTP18
Enabling STUN Feature for SIP Protocol
If you want to make private-to-public calls via SIP protocol (SIP account and SIP IP call), you can enable
STUN feature for SIP protocol.
Procedure
1. Do one of the following:
• On your web user interface, go to Account > SIP Account/SIP IP Call > NAT Traversal.
• On your VCS, go to More > Settings > > Advanced > Account > SIP IP Call > NAT Traversal.
For VP59, tap Settings Advanced Account SIP IP Call NAT Traversal.
•
On your CTP20/CTP18, tap > Settings > Advanced > Account > SIP IP Call > NAT Traversal.
2. Configure and save the following settings:
Parameter Description Configuration Method
NAT Traversal
Select STUN.
Web user interface
Endpoint
CTP20/CTP18
Related tasks
Setting SIP Account/SIP IP Call
Configuring NAT
H.460
VCS allows the firewall traversal of H.323 calls via H.460 protocols. To use this feature, make sure your
gatekeeper supports H.460 feature.