LANCOM 1811n Wireless – LANCOM 1821n Wireless
Chapter 10: Advice & assistance
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10 Advice & assistance
See this chapter for first-aid assistance if some of the typical problems should
occur.
10.1
No WAN connection can be established
After starting, the router attempts automatically to connect to the Internet
provider. If successful, this LED switches to constant green. This is generally
due to one of the following causes:
Problems with the cabling?
For the DSL connection, use only the connector cable supplied. This cable
must be connected to the Ethernet connector of the DSL modem
Is the correct transmission protocol selected?
The transmission protocol is defined with the basic settings. The Basic Settings
Wizard actually sets the correct protocol for a wide variety of DSL providers. If
your DSL provider is unknown to the Wizard you have to set the protocol
yourself. The protocol specified by your DSL provider should work without pro-
blem.
You can check and adjust your protocol settings under:
LANconfig: Communication
General
Communication layers
WEBconfig: LCOS Menu Tree
Setup
WAN module
Layer list
10.2
Slow DSL transmission
The speed of data transmission over an (Internet) DSL connection depends on
a number of factors, most of which are beyond the influence of normal users.
Along with bandwidth of your provider's connection, of decisive importance
is the provider's Internet connection and the load on the target Web page.
Several other factors in the Internet itself can also influence the transmission
speeds.
Increasing the TCP/IP window size under Windows
If the actual transmission speed over a DSL connection is significantly lower
than the maximum specified by the DSL provider, there are very few potential
error sources with your own equipment.
