Communication impossible: message = connection lost

After I dial or when I receive a call, the connection seems to be made up to one ring, then a sound occurs, a red cross shows up on the screen with the message "connection lost". What is the problem ? (This has happened all of a sudden, my handset was working perfectly fine before)

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Hi,

Have you checked the batteries? Are they showing fully charged? What do they show when the connection is lost? Can you try a different set of batteries to see if they hold the connection?

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