why I can't hear anything?

[davidmxiao]

when I use the freephoneline on my computer, I have to turn off the Firewall, otherwise I can't hear anything, though others can hear me. I use Rogers Online Protection.

[FONGO_steve]

Your firewall is blocking the key ports our program uses. The softphone uses UDP port 13000 and 13001. If you make exceptions in your firewall for those ports it should work just fine.