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Symptom
You cannot connect to the
Internet.
You cannot open a connec-
tion from a wireless device to
the Gigaset SE505 dsl/cable.
The Gigaset SE505 dsl/cable
or other PC's cannot be
reached by a PC in the con-
nected LAN with a ping com-
mand.
Possible cause and solutions
u
Check that you are using the right cable to connect
to the modem. Depending on the modem you are
using, the cable must have either straight or cross
wiring. Please consult your modem operating
instructions. The Ethernet cable supplied has
straight wiring.
u
Check whether the Auto Connect option has been
deactivated (for PPPoE or PPTP connections). In this
case, connections cannot be opened automatically.
Select Auto Connect. Remember that this setting
may lead to higher costs if you are billed on the time
used.
u
The connection may have been terminated manu-
ally with the Auto Connect option selected.
– Open the connection manually using the Connect
button again or
– restart your router.
In both cases, the Auto Connect setting will be
active again.
The wireless network adapter is not using the correct
SSID.
u
Change the SSID on the network adapter.
Either encryption is enabled on the Gigaset SE505 dsl/
cable but not on the wireless network adapter, or it is
not using the correct key.
u
Activate the correct encryption method with the
correct key on the network adapter.
If you do not know the key, you will have to reset
your router (see page 103).
Warning: Please bear in mind that this will restore all
configuration settings to the factory settings.
u
Make sure that TCP/IP has been installed and config-
ured on all the PCs on the local network.
u
Check that the IP addresses have been properly con-
figured. In most cases, you can use the Gigaset
SE505 dsl/cable's DHCP function to assign dynamic
addresses to the PC's in the LAN. In this case, you
have to configure the TCP/IP settings of all the PC's
so that they obtain the IP address automatically.
If you configure the IP addresses in the LAN manu-
ally, remember to use the subnet mask
255.255.255.x. This means that the first three parts
of the IP address on each PC and the router have to
be identical. The router also has to be configured as
DNS server and as default router.
Appendix
101
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