16
NAT/DDNS
NAT Traversal
If a Gateway is set up under an IP sharing you can select NAT or STUN protocol.
Ÿ
NAT: The IP address used by Gateway should be a virtual address. Further, users must set the
Virtual Server Mapping in the NAT Server (A virtual server is defined as a Service Port
and all
requests to this port will be redirected to this specified the server IP address ).
The
default
port
is
listed
below:
Listen Port (UDP): 5060
RTP Port Base (UDP): 9000~9061 (Channel used for telephone communication).
Http Port (TCP): 80 (The port can remain disable if users are not going to login from a remote
end for the setting).
Ÿ
NAT IP/Domain: Enter the NAT Server IP address (Real External IP address of NAT Server). If
using DDNS (Please refer to the next setting item), then fill in the URL (Uniform Resource
Locator).
Ÿ
STUN: Use STUN protocol prevents problems setting IP sharing, but some NAT do not support this
protocol.
Ÿ
STUN Server and Port: Enter the STUN server IP address and Listen Port number.
Ÿ
Uses UPnP: Add a new function to enable the VoIP gateway’s IP traffic to pass through a NAT
server. This function only works when the NAT server support UPnP and has it enabled.
Setting up the DDNS (Dynamic Domain Name Service) to solve the problem of general Gateway, which
cannot be set up under NAT (which uses a dynamic IP address).
These settings are only necessary when Gateway is set up under a NAT, which not only uses a dynamic IP
address but also does not support DDNS.
Choose a DDNS Server: The current system allows users to choose either private or DynDNS server.
Please apply for a user account before choosing a service provider.
Server: Set up the IP address or URL (Uniform Resource Locator) of the DDNS Server.
Hostname: The URL (Uniform Resource Locator) of the system (or NAT) – apply for from a domain
name registration providers.
ID and User’s Password: The ID and password are used to login the DDNS server.
IP Auto Detect: Select only when the system is set up under NAT.
NOTE: If the Gateway is set up under NAT, then enter the hostname into the NAT IP/Domain.
Summary of Contents for voicecom
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