Known Issues

  1. SIP ALG is enabled by default and must be disabled, this is a setting which causes intermittent call & phone feature failures.
  2. Must change the DHCP DNS servers, inefficient DNS servers causes Polycom phones to intermittently lose registration.
  3. This router doesn't have any bandwidth management controls.


  1. Telnet to the router using a telnet client such as PuTTY.
    Important: AT&T does not support enabling Telnet on their routers and this resolution is not guaranteed to work. These routers are NOT recommended, Intermedia will suggest the recommended resolution below in lieu of the following.
  2. Use the following telnet commands:
    • telnet
    • <enter the device access code, you'll have to authenticate>
    • configure
    • set ip alg sip-enable off
    • set ip dns primary-address
    • set ip dns secondary-address
    • set ip dns proxy-enable off
    • set conn name WAN icmp-echo-drop off
    • set security firewall-level low
    • validate
      • you should see no errors
    • save
    • exit
  3. Reboot your Motorola router and all phones and computers.

Recommended Resolution

  1. Purchase a recommended router and bridge the NVG 589 to the reccommended device.
  2. Intermedia cannot setup the new router for you, but your IT or the manufacturer of your new router can help you. They will need to move settings from the old to the new router to ensure your computers and other devices on the network work properly.
  3. Once you have the new router setup and working with your network, you or your IT will need to follow the instructions found in the link below to bridge the NVG589 to the new router to resolve the Known Issues above: