Default Is there a way to get wifi calling on a custom rom?

I want to use pacman rom on my galaxy s4 but I want wifi calling that's why I'm not using it, is there a way to do that? And also can someone send me the pacman rom for tmobile galaxy s4.. Last time I tried, the file didn't work and i had to reinstall stock touch wiz from custom recovery and start all over again, so please send me a good one