Motorola HH1620, User Manual

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Configuration
DDNS – Dynamic DNS
DDNS is useful when you have a host (running for example, a web server) that receives a
dynamically assigned IP address from a DHCP server. A user on the Internet would typically
access the host by entering its name in their web browser. A DNS server on the web would
then resolve the name to its associated numeric IP address, as required for Internet protocol
processing. However, when a host's IP address is dynamically assigned (for example, by a
DHCP server), it may change frequently. In this scenario, a DNS server may have outdated
data and may not be able to resolve a host name to the current IP address.
When a host is registered with a DDNS service provider, the provider is automatically notified
by the host of any change in its IP address and the provider then propagates the change
throughout the DNS server system.
HH1620 Wireless VoIP Gateway
User’s Guide
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