LevelOne VOI-7100 - Manual (Page 80)

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7. Trouble Shooting
7.1. Do not hear dial tone?
When you pick up the phone and hear a busy tone, it indicates the WAN port is
NOT connected. The LCD will show Ethernet Error! Make sure the ADSL
Ethernet cable is connected to the WAN port of IP Phone and Power Reset
again.
7.2. Can not access web page?
IE Web Browser is a useful tool to configure IP PHONE. When you have
difficulties in accessing the default IP address http://192.168.1.100 of IP
PHONE as in the following figure, the most possibility is that the PC might have
different subnet IP settings from 192.168.1.xxx. In this case, you must change
IP PHONE IP address to the same subnet as PC and NAT router.