External IP:

External IP/Public/Internet address system uses

Example: If your system is behind NAT set this option to Public/Internet IP address system uses when registering with other proxies over Internet

Field Type: [0-9]

External Host (DynDNS):

DynDNS address system uses

Example: If your system is behind NAT, along with the External IP address you may use the DynDNS service as well. Set this field to DynDNS host

Field Type: [0-9]

External Host Refresh:

How often to refresh External DynDNS host (if used)

Example: Time in seconds (e.g. 10)

Field Type: [0-9]

Local network:

If system is used in local network, set the local network address here

Example: 192.168.0.0/255.255.0.0

Field Type: [0-9]

NAT:

Global SIP NAT setting which affects all users/peers

Example: Set this option to 'Yes' if system is behind NAT

Field Type: Option buttons