Recent content by Matt Szalkowski

  1. 1 Way Audio on Remote Phones

    Thank you all for the input, I've thrown it to the customer's Firewall/IT Management to resolve the Firewall Checker failure. I will update with results.
  2. 1 Way Audio on Remote Phones

    Just kind of thinking this through - I did a capture on the inside of the 3CX, but I did not get one on the outside of the firewall/router or outside of the remote phone to make sure it was making it out of the firewall properly and to the endpoint phone. If this problem resurfaces in a day or...
  3. 1 Way Audio on Remote Phones

    Thank you for the quick response. That was my first thought, however when I do a capture right from the desktop of windows running 3CX I do see both RTP streams in the capture and can play them. The firewall checker does fail on SIP and the second range of RTP ports, but as near as I can tell...
  4. 1 Way Audio on Remote Phones

    We have a system with multiple remote sites using STUN. For some reason ever since upgrading to 15.5 SP6, they have issues where they start getting 1 way audio on the remote phones. The remote phones cannot hear anything, but the caller can hear them just fine. Packet captures show the RTP...