What is GTI long distance?

Question

ok, my husband was adopted at 2 weeks old, we just found his family. The only problem is that is father is in prison, (yikes I know) anyways. My hubby and his father can only talk on the phone if we have GTI long distance? What is it? How do you know if you have it? Thank you!!

Answer 1

My guess would be

http://home.gti.net/