User guide

TALKSWITCH CONFIGURATION 41
Example: A DNS server is used by your web browser to resolve
www.talkswitch.com to an IP address such as 64.26.166.52. For more
information, see VoIP Information on page 161.
Alternate DNS Server:
Enter the alternate/secondary DNS servers IP address if applicable.
Public WAN IP Address
Type of public WAN IP address for Internet Connection:
This field is set to dynamic by default. The unit checks the public IP address
every 5 minutes. If it changes, it automatically updates to the correct
information in order to manage VoIP calls properly.
The dynamic setting will not work in closed network environments. In a
closed network environment, change the field to static and enter the
appropriate IP address. If the unit is not behind a router, enter the IP address
of the unit acting as the local proxy.
Current public WAN IP address:
For the dynamic setting, this entry shows the current public IP address and is
not editable. For the static setting, enter the IP address or the FQDN of your
location.
Public WAN IP address-checker server name:
For the public IP address type dynamic, this entry shows the current server
name for the IP checker utility. If the public IP address type is static, no
information is required.
The default location is checkip.talkswitch.com. An IP checker application is
running on the server that responds to requests from units for the public IP
address at its location.
Fully Qualified Domain Name:
A Fully Qualified Domain Name (FQDN) is required if this location acts as the
SIP server and does not have a static public IP address from your service
provider. You can obtain FQDNs for free at www.dyndns.org. If your router
supports DDNS, program the required information to update the DNS servers.
If not, download one of the applications specified on the site. It needs to
run on a PC connected to the same LAN to update the DNS servers. If the
unit is enabled as a SIP server and no FQDN was entered, the prompt below
displays.