Settings
What are the system requirements to use the premium Yahoo! Voice services? How can I make sure that I can use the service before signing up? Can I use Yahoo! Voice services from behind a firewall? Can I use Yahoo! Voice services on a different PC, such as at an Internet café? How can I change the sound volume? How can I change my Caller ID? What are the keyboard shortcuts I can use with Yahoo! Messenger with Voice?
Calling and Dialing Instructions
How do I make calls to regular telephones with Yahoo! Messenger? Can I call mobile telephone numbers? Can I call 411, 555-1212, and other Directory Assistance or operator-assisted numbers? Can I dial letter numbers or vanity numbers? What Caller ID is exposed when I make calls from Yahoo! Voice services?
Voice Issues
How do I install the DSP Group TrueSpeech™ Audio CODEC? What kinds of firewalls are supported to use Yahoo! Voice services? What ports are used by Yahoo! Voice services? How do I configure my firewall to make Yahoo! Voice calls work? Does it matter if I have a slow or fast network connection when using Yahoo! Messenger's PC-to-PC voice service? What kinds of network address translators (NATs) are supported to use the Yahoo! Voice services? What quality of service (QoS) does Yahoo! Voice services offer? Why does the call quality vary depending on the type of firewall or network address translator (NAT) connection I have? Why is there an echo? Why is their voice choppy? I can't hear or be heard. The sound device is currently in use by another audio application. I am unable to use the Yahoo! Voice services due to a connection problem. What might be causing this? Why can't I connect to the voice servers? Why can't Yahoo! Messenger with Voice access my microphone? Why is it important that I provide feedback about the call quality?
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