HI,

 I would suggest you the best. Dialmama.com and kantipurtel.com are providing voip services in nepal. VoIP is 50% legal and 50% illegal in nepal. That is , origination is legal but termination is illegal. This means you can make calls from nepal using voip but can't terminate calls to nepal using voip. So when you get into nepal you can contact kantipurtel or dialmama support and request for voip . They will have a service rep in nepal do the installation for you and the rate for calling usa is just 80 nepali paisa per minute. This way you will be fully legal