Many free PC-to-PC telephony programs also offer PC-to-Phone communications as well. Most PC-to-PC telephony software works like several of the popular Instant Messaging clients. Good PC-to-PC telephony software clients allow you to keep a contact list, and when that contact is online, you simply click to begin a voice conversation, similar to initiating a text instant message. Some clients will allow you to initiate a group or multiple-user PC-to-PC telephony session, while others include this feature only when you upgrade from the free version.
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