One advantage of VoIP is that the telephone calls over the Internet do not incur a surcharge beyond what the user is paying for Internet access, much in the same way that the user doesn't pay for sending individual emails over the Internet.

There are many Internet telephony applications available. Some, like CoolTalk? and NetMeeting?, come bundled with popular Web browsers. Others are stand-alone products. VoIP also is referred to as Internet telephony, IP telephony, or Voice over the Internet (VOI).

know more: Calling Cards Sell

トップ   新規 一覧 単語検索 最終更新   ヘルプ   最終更新のRSS