Ryan Posted September 18, 2007 Report Share Posted September 18, 2007 The Phone is a Grandstream phone. I can call the phone from my cell phone, and can hear and talk back and forth fine... but when I try to make a call from the phone, I cannot hear the other person talking, yet they can hear me. The fact that it works fine on receiving but not on sending makes no sense. It sounds like a firewall issue, but we are set up fine. Any ideas? Ryan Quote Link to comment Share on other sites More sharing options...
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