Free PC-to-PC Calling
What are the system requirements for using Voice with Yahoo! Messenger with Voice? How do voice messaging and call history work? How do I use custom ringtones? How do I place a call? How do I run the Call Setup Assistant? What is Yahoo! Messenger Call? Why can't Yahoo! Messenger access my microphone? The sound device is currently in use by another audio application. I can't hear or be heard. How do I install the DSP Group TrueSpeech™ Audio CODEC? Why is there an echo? Why is their voice choppy? Why can't I connect to the voice servers? What kinds of network address translators (NATs) are supported to use the PC-to-PC voice feature? I am unable to use the PC-to-PC voice feature due to a connection problem. What might be causing this? What ports are used by Yahoo! Voice services? Why does my network connection speed matter when making PC-to-PC calls? What kinds of firewalls are supported to use the PC-to-PC voice feature? What quality of service (QoS) does the voice feature of Yahoo! Messenger offer? Does my voice call go through a server or via a peer-to-peer connection? Why does the call quality vary depending on the type of firewall or network address translator (NAT) connection I have? How do I configure my firewall to make Yahoo! Messenger PC-to-PC calls work?
Open Talk
What is Open Talk and how do I use it? What is required to use Open Talk? Can more than one user talk to me at the same time through Open Talk? Who can see that I have enabled Open Talk? I have enabled Open Talk, but my friends can't connect to me.
Conferencing
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