Known Issues

  • SIP ALG is enabled by default on this device and there is no option to disable it. This causes intermittent one-way audio at the start of calls, phones calls to fail to voicemail, transfer failures, and other strange phone issues.
  • The DHCP DNS servers cannot be changed from the Comcast default DNS servers.  They often take too long to respond to the Polycom phone DNS lookup requests.  This causes phones to stop registering intermittently, causing call and feature failures, usually associated with the URL Calling Disabled error message.


  1. Buy a recommended Router.
  2. Call the router manufacturer or your IT to setup the new router.
    • Intermedia cannot set up 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. Technicolor gateway must be bridged to your new router. There can be two ways to bridge the gateway:
    • Call the ISP and ask them to bridge the modem from their end. It is at the discretion of the ISP, whether or not they will allow the modem to be bridged.
    • It is possible to bridge the modem manually without contacting the ISP. Comcast gateways may allow us to enable bridge mode from the web interface: the default IP address will be > default credentials admin/password > from the web UI: Gateway > At a Glance:

Important: There is an important downside to the bridge mode with Xfinity (Comcast) gateways.
MOCA (Multimedia over Coax Alliance) is not going to work if the bridge mode is on. Why it is important? If the customer is having cable boxes with Xfinity, and to be more specific, xi5 or xi6 (e.g. for tv) then it is required to have the MOCA feature to be ON. Please, warn the customer that should the bridge mode be turned on, all wireless boxes will stop working and the RDK-03087 error will be displayed on affected TV sets. Recently Comcast has approved the usage of customer-owned modems that support MOCA, so this might be a work-around if the customer needs to turn off SIP-ALG, hence use the bridge mode and buy a third-party non-comcast router.