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Troubleshooting notes:
Error Possible Cause Measures
No sound or only sound from the
speakers.
Wrong setup in Windows or the
VoIP Software of your provider.
Check the audio setup of the
phone in the system preferences
of your computer.
Check your audio setup in the
preferences of your soft phone.
No picture when calling and using
a webcam.
Ask the provider of your soft
phone (e.g. Skype) whether the
webcam you are using is suppor-
ted.
Check your webcam with its own
software to be sure that it works.
Use a webcam that is supported
by the soft phone of your provider.
No telephone connection possi-
ble, but USB drivers and software
work correctly.
Firewall or proxy server setup Change your firewall or proxy ser-
ver set up as recommended by
your soft phone provider.
No calls to the public telephone
network or to mobile phones pos-
sible.
Not enough credit on your
account at your provider.
Recharge your account at your
provider.
The soft phone of your provider
does not react
USB phone driver software not
loaded.
Wrong soft-phone provider
selected in your USB phone
driver.
Start the USB phone driver soft-
ware.
Select the appropriate provider
from the USB phone driver list.
The USB phone is not detected
as an USB device.
The USB ports of your computer
are turned off.
Turn on the USB ports in the
BIOS of your computer.