Network Address Translation - Polycom IP 320 Administrator's Manual

Central Configuration file:
sip.cfg
(provisioning
server)
Local Web Server
(if enabled)

Network Address Translation

Central Configuration file:
sip.cfg
(provisioning
server)
Local Web Server
(if enabled)
Configuration changes can be performed centrally at the provisioning server
or locally:
Specify whether to filter incoming RTP packets by IP address,
whether to require symmetric port usage or whether to jam the
destination port and specify the local RTP port range start.
• For more information, refer to
Specify whether to filter incoming RTP packets by IP address,
whether to require symmetric port usage, whether to jam the
destination port and specify the local RTP port range start.
Navigate to: http://<phoneIPAddress>/netConf.htm#rt
Changes are saved to local flash and backed up to <Ethernet
address>-phone.cfg on the provisioning server. Changes will
permanently override global settings unless deleted through the
Reset Local Config menu selection.
The phone can work with certain types of network address translation (NAT).
The phone's signaling and RTP traffic use symmetric ports (the source port in
transmitted packets is the same as the associated listening port used to receive
packets) and the external IP address and ports used by the NAT on the phone's
behalf can be configured on a per-phone basis.
Configuration changes can be performed centrally at the provisioning server
or locally:
Specify the external NAT IP address and the ports to be used for
signaling and RTP traffic.
• For more information, refer to
<nat/>
Specify the external NAT IP address and the ports to be used for
signaling and the RTP traffic.
Navigate to: http://<phoneIPAddress>/netConf.htm#na
Changes are saved to local flash and backed up to <Ethernet
address>-phone.cfg on the provisioning server. Changes will
permanently override global settings unless deleted through the
Reset Local Config menu selection and the <Ethernet
address>-phone.cfg is removed from the provisioning server.
RTP <rtp/>
Network Address Translation
on page A-150.
Configuring Your System
on page A-73.
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