XONTEL XT-400FXO, Руководство пользователя

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Table 4-3-2 Definition of NAT Settings
Options Definition
Local Network
Format:192.168.0.0/255.255.0.0 or 172.16.0.0./12. A list of IP address or IP ranges which are
located inside a NATed network.
This gateway will replace the internal IP address in SIP and SDP messages with the external IP
address when a NAT exists between the gateway and other endpoints.
Local Network List Local IP address list that you added.
Subscribe 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 externaddr 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 provider.
Externally Mapped TCP Port The externally mapped TCP port, when the gateway is behind a static NAT or PAT
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.