Network Address Translation; Corporate Directory - Polycom SIP 3.1 Administrator's Manual

Administrator's Guide SoundPoint IP / SoundStation IP
Central Configuration file:
sip.cfg
(boot server)
Local Web Server
(if enabled)

Network Address Translation

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

Corporate Directory

Note
4 - 34
Configuration changes can performed centrally at the boot server or locally:
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.
• 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 boot 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 boot server.
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 performed centrally at the boot 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 boot 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 boot server.
This feature requires a license key for activation. Using this feature may require
purchase of a license key or activation by Polycom channels. For more information,
contact your Certified Polycom Reseller.
RTP <rtp/>
Network Address Translation
on page A-120.
on page A-57.