Please visit this section to solve most of the issues about VoIP service. Simply click on the topic on the left side menu in finding more information about.
I can make and receive calls but why one person can't hear the other?
If your VoIP device is placed behind a router or a combined modem/router, you may experience problems with your Boloh service because of firewall issues.
Try the solutions as described in "Calling Issues with Router"