Rtp Ports Configuration; Network Address Translation (Nat); Nat Traversal Configuration - Yealink SIP-T5 Series Administrator's Manual

The UDP port used for RTP streams is traditionally an even-numbered port. If the port 11780 is used to send and
receive RTP for the first voice session, additional calls would then use ports 11782, 11784, 11786, and so on. The
phone is compatible with RFC 1889 - RTP: A Transport Protocol for Real-Time Applications
3550.
Topic

RTP Ports Configuration

RTP Ports Configuration
The following table lists the parameters you can use to configure RTP ports.
Parameter static.network.port.min_rtpport
Description It configures the minimum local RTP port.
Permitted
Integer from 1024 to 65535
Values
Default
11780
Web UI
Network > Advanced > Local RTP Port > Min RTP Port (1024~65535)
Parameter static.network.port.max_rtpport
Description It configures the maximum local RTP port.
Permitted
Integer from 1024 to 65535
Values
Default 12780
Web UI Network > Advanced > Local RTP Port > Max RTP Port (1024~65535)
Parameter features.rtp_symmetric.enable
Description It configures the symmetrical RTP feature.
0-Disabled
1-reject RTP packets arriving from a non-negotiated IP address
Permitted
Values
2-reject RTP packets arriving from a non-negotiated port
3-reject RTP packets arriving from a non-negotiated IP address or a non-negotiated port
Default
0
[1]
If you change this parameter, the phone will reboot to make the change take effect.

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.
[1]
[1]
Network Configurations
- and the updated
<y0000000000xx>.cfg
<y0000000000xx>.cfg
<y0000000000xx>.cfg
RFC
53