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  1. Solved 3CX-App has problems with Tunnel mode 15.5.280

    Seeing your messages and responses, I change the provisioning settings for the 3CX client and told it to use TCP for SIP and Normal for RTP instead of TLS and Allow Secure and it connects to the PBX just fine now after resending the provisioning file. So something broke TLS and SRTP support for...

  2. Solved 3CX-App has problems with Tunnel mode 15.5.280

    I have sent through a PM with the information requested. With no configuration changes on my end, this worked a month or two ago. One of the 3CX client or server updates broke the functionality. Previously the Android client would connect to my edge firewall from the Internet and connect on...

  3. Solved 3CX-App has problems with Tunnel mode 15.5.280

    I think I might have the same problem. Looking at my firewall logs the 3CX android client appears to be dead set on always attempting to register over SIP/TLS (TCP 5061) any time you launch it. Since I don't have SIP ports open to the Internet and only have the tunnel open that means that...
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