Linksys PAP2T VoIP Adapter Setup Guide


Before you start, you need to know your VoIP username, password and the server that your number is connected to. You can do this from your Goldfish account, by clicking My Goldfish, then “Your Numbers“, then the telephone number that you wish to connect to. The VoIP username and VoIP password are near the bottom of the page, in a section entitled VoIP Settings.

Step 1: Locating the IP Address

You must first determine what IP address it received. To do this, you need to pick up the phone attached to the Line 1 jack and dial: **** (four asterisks) then dial: 110# and you will be told the IP address of your device (e.g.

Step 2: Log in to the phone’s web interface

To log in to the phone’s web interface, you will need to open your browser and type your IP address into the address bar. You should get something like When you do, press Enter and this will log you into the phone.

Step 3: Setting the NAT Settings

Click on the Ext 1 tab and configure your account details exactly as displayed in the image below.

  • Set “NAT Mapping Enable” to Yes 
  • Set “NAT Keep Alive Enable” to Yes

Step 4: Setting SIP Settings

  • Set “SIP Port” to 8061
  • Set “EXT SIP Port” to 8060

Step 5: Setting Proxy and Registration Settings

  • Set “Proxy” to
  • Set “Register” to Yes

Step 6: Setting Subscriber Information

  • Set “Display Name” to anything you wish
  • Set “User ID” to your VoIP Username
  • Set “Use Auth ID” to Yes
  • Set “Password” to your VoIP Password. To retrieve your VoIP password go to your account page and click on your number and it will be displayed under VoIP Settings

Once completed, click on submit changes and this will reboot the device. Once rebooted, your device will then be configured with the Goldfish service.