We use the most extensive ADSL, there is no fixed IP address, each broken
network connection, again after the IP network, ADSL can realize network
monitoring camera? Of course, want to use "to dynamic DNS services.
A dynamic DNS function
 dynamic DNS (DDNS) service
Dynamic DNS is the Internet domain name can be fixed and dynamic real-time
corresponding IP address (analytic). It can be a fixed to a dynamic DNS IP
address, simply said, no matter when the user access and in what way does
online, IP address changes, it can ensure through a fixed domain name can access
to a user's network video camera, the server. This means that the dynamic DNS
services in the computer has a fixed as the IP address, can act as Internet
server.
Second, the dynamic DNS analytic process
Dynamic DNS system dynamic IP address mapping of users to a fixed DNS (DDNS),
dynamic DNS system is usually consists of two parts. The first part is the
server, located on the mainframe provider. The other part is the client program,
users can be embedded in the network video cameras or server. In each connection
network, the client will put the host's IP address to send in the host server
providers, server program is responsible for providing services and realize the
dynamic DNS, DNS client after notification server update data, will immediately
new IP address and domain of the original fixed, so binding completed the
dynamic DNS domain, others can access to your server.
Third, ADSL bandwidth
ADSL broadband uplink bandwidths and descending bandwidth is different,
the uplink bandwidths only, can satisfy all 512K image transmission. By lowering
some graphics and frame rate, most can 4 road image.
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