Use the settings described here to configure the Internet connection in FRITZ!Box.
If you have connected FRITZ!Box to a router or a cable modem, the you must configure the IP settings for FRITZ!Box in the "Connection Settings" area.
Specify how the FRITZ!Box should receive its IP address:
Throughput of your DSL Connection
Enter the corresponding throughput rates of your DSL line in the "Upstream" and "Downstream" fields. This information is supplied by your DSL provider.
Attention: After changes to these settings are applied, the FRITZ!Box user interface can be reached only via the configured IP address or the IP address assigned by the DHCP server.