Troubleshooting
Indication/Symptom What to do
On the Internet page, verify that
the mobile network signal quality
indicator displays at least two bars.
If not, try to move the Ericsson
The Internet connection is
unacceptable slow or regularly
dropping. W25
or attach an external antenna.
On the Internet page, verify that
the Connection is HSDPA or UMTS.
If not, move the Ericsson W25 or
attach an external antenna (indoor
window or outdoor roof mounted).
External antennas are available as
accessories to the Ericsson W25.
Verify with your operator that
HSDPA is available.
For optimizing the performance of
the Internet connection, it might be
necessary to change some TCP
settings in the client PC as
described in section 6.4.1 –
Change TCP Settings.
Cannot access a certain Internet
application or specific type of data
applications.
If the application uses FTP or
TFTP, check the NAT page to
make sure that the ALG supporting
the Internet application is enabled.
If the application requires UPnP
IDG, check that UPnP IDG is
enabled on the NAT page.
A port forwarding rule might be
required for a specific application.
See section 4.7.3 – Port
Forwarding.
6.4.1 Change TCP Settings To achieve maximum performance on the Internet connection some
parameters in the TCP/IP stack of the client PC can be changed. These
kinds of settings are hidden in the Windows registry, but there are some
tools that give user friendly access to them, for example “TCP Optimizer”,
http://www.speedguide.net/downloads.php
The following TCP settings are recommended to optimize the performance:
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