As the Ubiquiti USG doesn’t have any embedded modem, a specific one is required to connect to the Broadband network. The Draytek Vigor 120 is one of the most popular modem for ADSL connectivity (or Vigor 130 model which supports FTTx).

Modem configuration

Before connecting it to the USG Router, the Modem needs to be configured:

  1. connect the ADSL RJ11 cable to both wall socket and the Modem ADSL port
  2. connect your computer to the Modem LAN port with a RJ45 Ethernet cable – make sure that your computer is configured to get IP address automatically
  3. power the Modem on
  4. after 1 minute, your laptop should have received an IP address from the Modem, the default subnet is 192.168.2.0/24; the computer should have 192.168.2.10 but it doesn’t matter if it is another one in the same range
  5. open a browser and go to http://192.168.2.1 which is the address of the Modem
  6. no password is required (if asked for any, leave the field blank and type Enter)
  7. comparing with official information from the vendor at https://www.draytek.co.uk/support/downloads/category/2-downloads, make sure you have the latest firmware
  1. if required, update the firmware via the System Maintenance tab

once done, the Vigor 120 will reboot

  1. after reboot, get connected again to the Modem: http://192.168.2.1 and switch to Internet Access >> PPPoE / PPPoA tab
    • enable PPPoE / PPPoA Client
    • VPI: 0 (it should already be the default value)
    • VCI: 38 (it should already be the default value)
    • Encapulating Type: VC Mux (it should already be the default value)
    • Protocol: PPPoA (it should already be the default value)
    • Modulation: Multimode (it should already be the default value)
  1. click OK, the Modem then reboots again
  2. after reboot, get connected again to the Modem: http://192.168.2.1
  3. check that the ADSL status, a SHOWTIME state means that ADSL is now synchronized and that connection works
The configuration of the Modem is not completed. Let’s move to the USG Router.

USG Router WAN configuration

This guide assumes that the USG is already adopted and that you can access the to the Configuration Panel via the Unifi Controller.

The USG is connected as follows:

  1. Get connected to the Unifi Controller, then go to Settings / Networks / WAN / Edit and use following settings:

Connection Type: PPPoe

Username: bthomehub@btbroadband.com

Password: can be anything

Use your preferred DNS (the ones from BT, Google or Clouflare)

  1. Save the configuration

You are now connected to Internet via the Modem + USG Router combination.