This is an old revision of the document!


DrayTek 2800 Series

This article is relevant to the DrayTek 2800 series routes, which includes the DrayTek Vigor 2800, DrayTek Vigor 2820 and DrayTek Vigor 2850 models.

If using the SureVoIP Hosted service, you may need to disable SIP ALG on your DrayTek router.

To do so, you may need to install Telnet onto your Windows Vista/7 computer.

  • Start → Run → cmd
  • Type in:
    telnet 192.168.1.1 [Enter]
    This is the assumed IP address of your router.
  • sys sip_alg 0 [Enter]
  • If you are having difficulty, please contact your system administrator.