Don't have Telegram yet? Try it now!
https://ja.hideki.hclippr.com/2009/03/15/google-voice%e3%81%afskype%e3%82%ad%e3%83%a9%e3%83%bc%e3%81%ab%e3%81%aa%e3%82%8a%e3%81%86%e3%82%8b%e3%81%8b%ef%bc%9f/
Google VoiceはSkypeキラーになりうるか?