pflueger41
07-18-2010, 07:19 PM
When my wife is talking to her friend and she gets the call waiting beep, she presses the flash button and is able to talk with the second party. When she flashes back to the previous caller she cannot hear them but the caller can hear her. This occurs with all callers that have called and I've tried 3 different phones and also a portable, which all create the same problem. I have the Grandstream 502 and its behind a Linksys router which I have port forwarded 5000-65000 and still no good. Was hoping someone may know whats going on before I call support. Thanks for any help.