Canon PIXMA MX439 Support Question
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Question posted by TinaThompson on September 3rd, 2014
Canon Pixma Mx439 Fax Problem
I keep getting a "telephone line is in use" message on my Pixma MX439 fax?
Current Answers
Answer #1: Posted by Odin on September 3rd, 2014 9:58 AM
That message reflects that the phone number you're calling is being used either for an incoming or outgoing phone or fax.
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