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If you see 0 no lines are in use....If you see 1 or 2 one of your receivers is not working....make sure you see the charge light is on on your receivers.
Sorry, there was a problem. Please try again later.Had the same problem, and kept getting a busy signal when I was NOT using the phone. The friend who set it up for me fixed the problem after rereading the instructions. Sorry but can't help. I'm very untechy.
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