プロフィール最終更新日:
- はてなID
- piee38
- 自己紹介
-
VoIP service is the service that you get from a company (called a VoIP service provider) that allows making and receiving VoIP calls. It is like the Internet service you get from an Internet service provider or the phone service you get from a PSTN line telecom.
ホームページ 1 | http://www.voipbiznessforum.com/ |
---|