Known Issues

  1. No severe issues out-of-the-box.
  2. These gateways don't have SIP ALG, and the SPI firewall doesn't interfere with Intermedia devices.


  1. Login to the gateway.  The default username & password is:
    • username: cusadmin
    • password: highspeed
  2. WAN ping response to our Call Quality Monitoring and Troubleshooting Servers needs to be enabled.
    • WAN Pings is enabled by default unless you or your IT disabled it. 
    • To enable WAN Pings > Go to Firewall > Uncheck Disable Ping on WAN Interface.
    • Other Firewall settings to verify:
      • Disable Gateway Smart Packet Detection: Unchecked..
      • Disable Firewall for True Static IP Subnet Only: Unchecked.
  3. This step is only needed if you have or plan to purchase Polycom phones:
    • The steps below can take your network offline for 5 minutes or longer.
    • Please make sure to only do these changes at a time when you can afford to be offline.
    • You will need to reboot all your phones, computers, and other devices after making the changes below.
      • LAN > IP Setup tab > Check the Assign DNS Manually box > Enter:
        • Primary DNS:
        • Secondary DNS:
        • Click Apply
        • Reboot all phones, computers, and other devices on the network to clear their DNS cache & reconnect.
        • You may need to manually flush the DNS cache on your Windows computers using the command below from Command Prompt:
          • ipconfig /flushdns