ET 200X(L) Series Digital Gateway User Manual
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Network Change
Event
Through the use of the test_stun_monitor module, the gateway has the ability
to detect when the perceived external network address has changed. When
the stun_ monitor is installed and configured, chan_sip will renew all outbound
registrations when the monitor detects any sort of network change has
occurred. By default this option is enabled, but only takes effect once
res_stun_monitor is configured. If res_stun_monitor is enabled and you wish
to not generate all outbound registrations on a network change, use the option
below to disable this feature.
Match External
Address Locally
Only substitute the exeternaddr or externhost setting if it matches
Dynamic Exclude
Static
Disallow all dynamic hosts from registering as any IP address used for staticly
defined hosts .This helps avoid the configuration error of allowing your users to
register at the same address as a SIP provide.
Externally Mapped
TCP Port
The externally mapped TCP port, when the gateway is behind a static NAT or
PAI
External Address
The external address (and optional TCP port) of the NAT. External
address=hostname [:port] specifies a static address[:port] to be used in SIP
and SDP messages. Examples: External address=12.34.56.78 External
address=12.34.56.78.9900
External Hostname
The external hostname (and optional TCP port) of the NAT.
External Hostname=hostname[:port] is similar to
“External address”. Examples:
External Hostname=foo.dyndns.net
Hostname Refresh
Interval
How often to perform a hostname lookup. This can be useful when your NAT
device lets you choose the port mapping, but the IP address is dynamic.
Beware you might suffer from service disruption when the name server
resolution fails.