ports

  1. Restrict all inbound traffic to 3cx only

    Hello everyone, I'm new to the 3CX world and I'm wondering if it's possible when installing 3cx on debian, is it possible to apply a firewall rule that will only open ports 9000 - 9500 to 3CX. Slightly wary of just opening ports. Thanks for any and all replies. Dan

  2. 2 accounts on 1 phone (yealink)

    Unfortunately it is not possible to provision 2 accounts on the same phone with 3CX which would greatly help in setting the local SIP port so I'm trying to see if it is possible to get it working manually on my 3CX. In older Yealink firmware you could set a different local sip port per account...

  3. Network setup, two nics, 3CX tunnel problem

    Hi, we have problems to setup our 3CX environment. Our current setup: LAN: 172.21.3.0 WAN: 192.168.1.0 3CX has two nics, one for LAN (172.21.3.1) and one for WAN (192.168.1.1) FQDN is defined Local DNS resolves FQDN to 172.21.3.1 Router (192.168.1.254) is forwarding all relevant ports to...

  4. QOS recommendations and best practices for CLOUD (deb 8) install

    Hello, I have had a few quality issues over our network here... We have about 30 phones, all of which are soft phones (latest stable 3cx version on server and end user clients) and we have issues with echo and quality and occasional droped calls. All of this seems to be related to QOS issues...
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