Network Configurations
61
Network Address Translation (NAT)
NAT enables phones with private unregistered addresses to communicate with devices with globally unique
registered addresses.
Topics
NAT Traversal Configuration
Keep Alive Configuration
Rport Configuration
SIP Port and TLS Port Configuration
NAT Traversal Configuration
The phones can traverse NAT gateways to establish and maintain connections with external devices.
Yealink phones support three NAT traversal techniques: manual NAT, STUN and ICE. If you enable manual NAT
and STUN, the phone will use the manually-configured external IP address for NAT traversal. The TURN protocol is
used as part of the ICE approach to NAT traversal.
The following table lists the parameters you can use to configure NAT traversal.
Parameter
account.X.nat.nat_traversal
[1]
<MAC>.cfg
Description
It enables or disables the NAT traversal for a specific account.
Note
: If it is set to 1 (STUN), it works only if “static.sip.nat_stun.enable” is set to 1 (Enabled); if it is set
to 2 (Manual NAT), it works only if “static.network.static_nat.enable” is set to 1 (Enabled).
Permitted
Values
0
-Disabled
1
-STUN
2
-Manual NAT
Default
0
Web UI
Handset & Account > Handset Registration > Add Handset/Edit > NAT
Parameter
static.network.static_nat.enable
[2]
<y0000000000xx>.cfg
Description
It enables or disables the manual NAT feature.
Permitted
Values
0
-Disabled
1
-Enabled
Default
0
Web UI
Network > NAT > Manual NAT > Active
Parameter
static.network.static_nat.addr
<y0000000000xx>.cfg
Description
It configures the IP address to be advertised in SIP signaling.
It should match the external IP address used by the NAT device.
Note
: It works only if “static.network.static_nat.enable” is set to 1 (Enabled).
Permitted
Values
IP Address
Default
Blank
Web UI
Network > NAT > Manual NAT > IP Address
Parameter
static.sip.nat_stun.enable
<y0000000000xx>.cfg
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