Customers who connect through a firewall or proxy server may not be able use the voice feature. Here's how to determine if this applies to you:

1. Click the Messenger menu in Messenger and select Preferences.
2. Click the Connection category.
3. If anything other than No proxies is checked, you may not be able to use voice feature. You can try selecting No proxies and see if Messenger will connect.

You may configure your firewall or proxy server with the following information:

Protocol: UDP or TCP

Servers:

• v1.vc.scd.yahoo.com
• v2.vc.scd.yahoo.com
• v3.vc.scd.yahoo.com
• v4.vc.scd.yahoo.com
• v5.vc.scd.yahoo.com
• v6.vc.scd.yahoo.com
• v7.vc.scd.yahoo.com
• v8.vc.scd.yahoo.com
• v9.vc.scd.yahoo.com
• v10.vc.scd.yahoo.com
• v11.vc.scd.yahoo.com
• v13.vc.sc5.yahoo.com
• vc1.vip.scd.yahoo.com

Ports: 5000-5010