I recently changed from a M7100 to a M7310, but the new phone only recognizes lines 1 & 2, not 3 & 4. How do I reconfigure so I can pick up line 3 or 4 or program the keys for line 3 & 4?
The first thing you have to do is go into Treminal & sets put in the Ext. # press show till you get to line assignment and change line 3 to Ring & Appear and do the same to line 4, Release Feature * 0 and check your Buttons.
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