So I setup 3CX server last night with a couple of extensions to test with - 1 on a PC with the Windows softphone and 1 on my android phone. I have everything setup and I can call back and forth without issue. However, if I call my PC from my Android phone and the call goes to voicemail, I'm prompted to leave a message, I leave my message and then if I try to replay the message or save it and try to play it by accessing the voicemail 'backend' the message is blank. If I call the voicemail from my pc with a Mic, I have no problem, everything works perfectly. Any ideas? I can even call the PC from the PC and still get it to work. Very strange.