사용자 기여
- 2015년 7월 7일 (화) 12:06 (차이 | 역사) . . (+4,294) . . 새글 CasperLaguna335 (새 문서: To-day, when making a global phone calls you are probably being sent through IP infrastructure because of the lower prices of calls. VoIP devices use one of many competing transmissio...) (최신)
