How do I configure my ATA behind my X5v or V3 Router?

You can connect Zoom ATAs behind Zoom X5v or V3 VoIP routers, and use the VoIP features of both the ATAs and the VoIP routers. Since the X5v and V3 contain integrated VoIP capability, you will need to configure the ATAs you connect to avoid port conflicts. If the firewall in your X5v or V3 is enabled, you will also need to configure the firewall to accommodate VoIP traffic to the ATAs.

Keep in mind that all VoIP traffic will share whatever bandwidth is available in your connection to the Internet. You must make sure that this is enough to accommodate all the connected VoIP devices, plus whatever data traffic your network carries.

Set the ATAs to use distinct local SIP Ports
Set up distinct local SIP ports on each ATA. By default, the X5v and V3 use port 5060 for SIP traffic. You can assign other ports to your connected ATAs, for use as their local SIP ports. For example, you could assign port 5065 to one ATA, and port 5070 to another. Ports in the range 5061-5080 are typically available for assignment as SIP local ports.

For X5vs or V3s with Firewalls Enabled, Add Policies to Accommodate SIP Traffic
When the X5v or V3 Firewall is enabled, you need to add inbound and outbound policies to allow VoIP traffic for each ATA. You may find it convenient to assign static IP Addresses to your ATAs, to avoid ambiguity about what addresses DHCP may otherwise assign to them.

To add Inbound and Outbound Policies:

To add an Inbound Policy;

• log into the X5V or V3 and go to Advanced Setup/Firewall.
• Click Inbound Policy and then click Add/Modify Inbound Policy at the bottom of the page.
• If you have just one ATA connected to your router:
  • In the line labeled “Dest Port,” Select "Single IP."
  • Then, in the left-hand part of the "Dest IP" field, enter the IP address assigned to the ATA (e.g. 10.0.0.x).
• Alternatively, if you have several ATAs connected to your router:
  • In the line labeled “Dest Port,” Select "IP Range."
  • In the "Dest IP" field, enter the range of IP address assigned to the ATAs (e.g. 10.0.0.x – 10.0.0.y).
• Whether you have one or multiple ATAs connected to your router, when you have completed the above:
  • For "Transport Protocol," select "UDP"
  • Click Add-Modify Inbound Policy to save your changes.
  • Then, click Write Settings to Flash and Reboot.
  • When a screen asks you to Confirm, do so by clicking on the button.

Now you will need to add an Outbound Policy.

• Go back to Advanced Setup/Firewall.
• Click Outbound Policy and then click Add/Modify Outbound Policy at the bottom of the page.
• If you have just one ATA connected to your router:
  • In the line labeled “Src Port,” Select "Single IP."
  • Then, in the left-hand part of the "Src IP" field, enter the IP address assigned to the ATA (e.g. 10.0.0.x).
• Alternatively, if you have several ATAs connected to your router:
  • In the line labeled “Src Port,” Select "IP Range."
  • In the "Src IP" field, enter the range of IP address assigned to the ATAs (e.g. 10.0.0.x – 10.0.0.y).
    
• Whether you have one or multiple ATAs connected to your router, when you have completed the above:
  • For "Transport Protocol," select "UDP"
  • Click Add-Modify Outbound Policy to save changes.
  • Then, click Write Settings to Flash and Reboot.
  • When a screen asks you to Confirm, do so by clicking on the button.