sonicwall

  1. Need HELP with v20 FQDN & Firewall Checker using Sonicwall

    Hello and good day peeps. I am having issues and need some assistance with getting the FQDN to resolve the 3CX server private IP, so it will remove the "red error message" on the admin login landing page. Also with getting a good clean firewall check from 3CX. I have combed through all of the...

  2. Solved PHONES DROPPING REGISTRATION, 3CX VER 18

    Good Evening Everyone, We have 10 extensions with Grandstream 2170, Fanvil x7 and Yealink T48S phones. We are running 3CX 18.0 update 8 build 912. The system likes to drop the registration of the phones. Usually I am able to reboot them to come back online; however, this weekend has been a...

  3. External Calls Not Connecting to PBX Every time

    Hi, I have 3CX up and running on the latest version (16.0.5.622) and since the system updated automatically to this version I am now experiencing issues with external calls. If someone tries to call any of the 3 numbers attached to the PBX 9/10 times the caller hears nothing, complete silence...
    • James Price
    • Thread
    • call fail external call inbound call sonicwall update windows windows server windows server 2016
    • Replies: 9
    • Forum: Phone System / PBX

  4. Some Phones lose registration over night

    We just went live a couple of weeks ago with a new Cloud Based 3cx system fro our company. We have about 150 desk phones on the system, and we seem to have several issues with certain phones at different locations. The issue we have is that certain phones lose registration overnight, and its...

  5. Solved Firewall Configuration with Sonicwall & Port 5060 SIP Provider

    I have a confusing issue regarding Ports with 3CX and SIP trunk using a Dell Sonicwall - It is well documented that the following standard firewall ports are required - Port 5061 TCP only - Used for SIP TLS - not required for my system Port 9000 - 9500 UDP only (some same 10999) - Used for RTP...

  6. Solved Unable to pass firewall check v15 with SonicWALL

    I'm currently testing the 3CX v15 PBX. I have it sitting behind a SonicWALL NSA2600 with Firmware 6.2.5.3-35n. I've followed the guide on how to setup SonicWALL to work with 3CX. The only addition I've made is a static route as I have 2 wan connections. I am unable to get the firewall check...

  7. Sonicwall and Disable Source Port Remapping

    Have a quick question. In the configuration guide https://www.3cx.com/blog/voip-howto/sonicwall-firewall-configuration/ it says "Edit the Advanced TAB and make sure that “Disable Source Port Remap” is disabled." but then shows it checked. Should the Disabled Source Port Remap be checked...
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