Articles on: Troubleshooting

Recommend Router Settings for Various Router Brands/Models

  1. Belkin: F5D8233, F5D7230 and most of the models

DUO should be configured on DMZ in your router

Port Forwarding recommend UDP Ports 12000-12001

On your router it is required to add the DHCP for DNS1 as 4.2.2.2 and DNS2 as 4.2.2.1


  1. Westell: A90-750015-07 from Verizon

DUO should be configured on DMZ in your router

On your router it is required to add the DHCP for DNS1 as 4.2.2.2 and DNS2 as 4.2.2.1


  1. Ambit: Cable Modem Gateway (Modem/Router - Blocks Sip Access)

DUO should be configured on DMZ in your router

On your router it is required to add the DHCP for DNS1 as 4.2.2.2 and DNS2 as 4.2.2.1


  1. Frys Routers

Works with ddwrt open firmware but DUO should be configured on DMZ in your router

On your router it is required to add the DHCP for DNS1 as 4.2.2.2 and DNS2 as 4.2.2.1


  1. D-Link: Gamerlounge DGL-4500, it may cause loss of dial tone.

DUO should be configured on DMZ in your router

On your router it is required to add the DHCP for DNS1 as 4.2.2.2 and DNS2 as 4.2.2.1


  1. Netgear: WPN824N or similar models

DUO should be configured on DMZ in your router

SIP ALG Should be off (if option available under WAN Settings)

On your router it is required to add the DHCP for DNS1 as 4.2.2.2 and DNS2 as 4.2.2.1


  1. Verizon: GT704-WG-B (Causes DUO to drop after 2 rings)

DUO should be configured on DMZ in your router

On your router it is required to add the DHCP for DNS1 as 4.2.2.2 and DNS2 as 4.2.2.1


  1. RCA DCW 725 Wireless Gateway Modem/Router Combo

DUO should be configured on DMZ in your router

On your router it is required to add the DHCP for DNS1 as 4.2.2.2 and DNS2 as 4.2.2.1


  1. Ubee Modem/Router Combo Model DDW2600

DUO should be configured on DMZ in your router

On your router it is required to add the DHCP for DNS1 as 4.2.2.2 and DNS2 as 4.2.2.1


  1. Clear modem/routers: CPEi 25150

DUO should be configured on DMZ in your router

On your router it is required to add the DHCP for DNS1 as 4.2.2.2 and DNS2 as 4.2.2.1

Updated on: 03/13/2019

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