How to Reset the Linksys SPA-2100

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Setup Router Staff
(Last Updated: ) | Reading Time: 2 minutes

Here I will show you how to reset the Linksys SPA-2100 phone adapter.

There is some confusion between the term reset and reboot. In this guide when I use the term reboot I am referring to a cycle in the power to the unit. When I use the term reset I am referring to full factory restore of all settings. This means all your personal data is erased.

Warning: A reset is a big step. Make sure you understand that ALL your settings are erased. It is a good idea to make a list of all the settings you have changed in the past. The settings could include:

  • The router's main username and password used to access the router's main username and password..
  • Any port forwarding you have done in the past.
  • IP addresses that have been changed.
  • Parental controls, DNS, etc...

Other Linksys SPA-2100 Guides

This is the reset router guide for the Linksys SPA-2100. We also have the following guides for the same router:

Reset the Linksys SPA-2100

Use a VPN Instead

Have you considered using a VPN instead of forwarding a port? For most users, a VPN is a much simpler and more secure choice than forwarding a port.

We use and recommend NordVPN because not only is it the fastest VPN, it includes a new feature called Meshnet that makes forwarding a port no longer necessary for most applications. With NordVPN Meshnet, you can connect to your devices from anywhere in the world, completely secure, over a highly encrypted VPN tunnel.

When shopping for a VPN, make sure that they meet the following criteria:

  • Your VPN provider should have a no-logs policy. This means that they do not keep any logs of any kind.
  • Make sure that your VPN provider has lots of exit nodes all around the world.
  • Check that your VPN will not affect your speed.
  • Verify that your VPN provider uses WireGuard as the underlying protocol.
  • Many people prefer a VPN provider that is not based in the United States.

This is the list of requirements that we used when we were shopping around for a VPN provider. There are lots of free, shady VPN providers out there that we looked at and dismissed.

Based in Panama, using diskless servers, and with over 6,100 servers in 61 countries, we can safely say that NordVPN satisfies all of these requirements.

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Once you've set up your NordVPN account on multiple computers and enabled Meshnet, you can seamlessly access all of your devices as if they were on the same network. You don't even have to log in to your router. It's very simple.

Every time you click on one of our affiliate links, such as NordVPN, we get a little kickback for introducing you to the service. Think of us as your VPN wingman.

To reset the Linksys SPA-2100 phone adapter you need to have a phone plugged into the back of the adapter.

Use the keypad of the phone to select ****.

Next, wait until you hear Sipura configuration menu. Please enter option followed by the pound key or hang-up to exit.

At this point key in 73738 followed by the pound key #.

You will then be asked to confirm this by pressing 1 or canceling it by pressing the *.

Once you have confirmed the reset, wait until you hear Option Successful.

Hang up the phone then the reset will begin followed by a reboot.

DO NOT unplug or turn off the phone adapter during the reset process. It could cause permanent damage to the device.

Remember a reset like this erases all your personal data. I strongly recommend trying other troubleshooting methods before you continue.

Login to the Linksys SPA-2100

Following the router reset you will need to login to the router using the default login information. Here at we have found this information and compiled it for you. Check it out in our Linksys SPA-2100 Login Guide.

Change Your Password

Now that you have successfully logged into the router you should consider changing the password. Default passwords are easy to guess, making them bad at keeping your router secure. If you need any help on making a secure password for your router, visit our Choosing a Strong Password guide.

Tip: Worried about losing your password? Try writing it down on a note of some kind and attach it to the bottom of the router.

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Linksys SPA-2100 Help

Be sure to check out our other Linksys SPA-2100 info that you might be interested in.

This is the reset router guide for the Linksys SPA-2100. We also have the following guides for the same router: