Default [Q] Can't dial into telconf with T-Mobile Note 2 Kitkat ROMs?

I've tried several Kitkat ROMS for my T-Mobile Galaxy Note 2. All have the same issue: They won't send the right tones once I've connected to a conference call, so I can't use my cell to dial into a teleconference. It's a dealbreaker (and a heart breaker that I had to go back to the stock rom.) Is this a Kitkat problem? Or maybe it's a cyanogenmod problems and coincidentally all the ROMs I tried were based on CM11?