If you have 2 wires in the phone jack, it shouldn't be a problem to keep working like it is. If you have 4 wires you'll need to change the polarity of each pair until you don't have the polarity reversed any more.
One pair is connected to 3 and 4 the second pair is 2 and 5 or 1 and 6.
Other people asked questions on various topics, and are still waiting for answer. Would be great if you can take a sec and answer them