Linksys Key System Parameters - Linksys SPA922 Administrator's Manual

Parameter
STUN Test Enable
STUN Server
EXT IP
EXT RTP Port Min
NAT Keep Alive Intvl

Linksys Key System Parameters

Parameter
Linksys Key System
Linksys SPA9x2 Phone Administration Guide
SPA9x2 Phone Field Reference
Description
If the STUN Enable feature is enabled and a valid STUN
server is available, the SPA9x2 can perform a NAT-type
discovery operation when it powers on. It contacts the
configured STUN server, and the result of the discovery is
reported in a Warning header in all subsequent
REGISTER requests. If the SPA9x2 detects symmetric NAT
or a symmetric firewall, NAT mapping is disabled.
Defaults to no.
IP address or fully-qualified domain name of the STUN
server to contact for NAT mapping discovery.
External IP address to substitute for the actual IP address
of the SPA9x2 in all outgoing SIP messages. If 0.0.0.0 is
specified, no IP address substitution is performed.
If this parameter is specified, the SPA9x2 assumes this IP
address when generating SIP messages and SDP (if NAT
Mapping is enabled for that line). However, the results of
STUN and VIA received parameter processing, if
available, supersede this statically configured value.
Defaults to blank.
External port mapping number of the RTP Port Min.
number. If this value is not zero, the RTP port number in
all outgoing SIP messages is substituted for the
corresponding port value in the external RTP port range.
Defaults to blank.
Interval between NAT-mapping keep alive messages.
Defaults to 15.
Description
Enable or disable the Linksys Key System on the IP
phone.
Defaults to yes.
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