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  1. D-Link DFL-300 Firewall

    Here is a capture of wireshark during the time a call was made by an external extension to an internal extension. I have also included the Server Activity log from that time frame as well. 19:08:17.671 Currently active calls [none] 19:07:47.593 Currently active calls [none] 19:07:40.796...
  2. D-Link DFL-300 Firewall

    The table that I provided is a list of all the ports that we configured for use with 3CX. We also have an inbound policy that points the public ip to the private ip of the #CX server using the ports in that grid. I tried changing the client ports to match but that does not help either.
  3. D-Link DFL-300 Firewall

    I am not sure what you mean by the 1:1. We don't block any outgoing ports.
  4. D-Link DFL-300 Firewall

    Today we were able to get the external extension to work if we use the 3CX SIP Proxy. However, since these people are telecomuters all they have onsite is their notebooks. Therefore, the phone will only work if their notebook is on.
  5. D-Link DFL-300 Firewall

    Thanks for your help. Here is my current incoming services settings. These ports are forwarded to my phone system. The firewall checker comes up with no errors and everything passes.
  6. D-Link DFL-300 Firewall

    Hi, I am wondering if anyone has successfully gotten a D-LINK DFL-300 Firewall to work with 3CX. We have 3CX version 10 with a Sangoma A200 gateway. Everything internally works fine. We are having trouble with External extensions. There is no sound. These phones are Grandstream GXP1450...