Geemarc BDP400 - Manual (Page 41)

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Make sure that the power adaptor is plugged in correctly
and is not damaged.
The telephone does not ring
Make sure that the telephone line cord is plugged in
correctly and is not damaged.
Connect another telephone to the telephone line socket or
move your telephone to another socket to track if the
failure is coming from your telephone or your telephone
line socket.
There may be too many communication devices
connected to a single telephone line e.g. another
telephone, modem or facsimile machine. Contact your
network provider for help in calculating the limit for your
home or business line.
TROUBLESHOOTING