Question about voip phone cabling?

So, from what I've been able to find on Google thus far, a 100mbps phone only requires 2 pairs to work. What I haven't been able to find is if it requires a specific 2 pairs.

So my current issue is I have a phone not pulling an IP, saying please verify network connection. The TDR test shows pair 3 failed, others normal.

So from my understanding, it should work with at least 2 pairs good. But it's not..

So can anyone tell me if it requires a certain 2 pairs working?