The second generation Ooma Telo Base Station is compatible with all Ooma add-on devices, while the first generation Telo Base Station is only compatible with select add-on devices. This article contains instructions to help you determine which generation of Telo Base Station you have and to help you make sure your add-on peripherals can be installed properly.

  1. How can I tell which generation of the Ooma Telo Base Station I have?
  2. Which Ooma add-ons are compatible with each generation of Telo Base Station?
  3. How can I change which add-ons my first generation Telo Base Station can pair with?

How can I tell which generation of the Ooma Telo Base Station I have?

You can determine which generation of the Ooma Telo Base Station you have by checking the activation code on the bottom of the device:

activation code

If your activation code begins with a 2 or higher, you have the second generation Telo Base Station. If your activation code begins with a 0 or a 1, you have a first generation Telo Base Station. In this case, you may wish to contact our Customer Care Team to begin the process of upgrading your Telo Base Station to a newer model.

Which Ooma add-ons are compatible with each generation of Telo Base Station?

The chart below outlines which add-ons are compatible with each generation of the Telo Base Station.

First Gen. Telo Base Station Second Gen. Telo Base Station

Ooma HD1 Handset
Yes* No

Ooma HD2 Handset
Yes Yes

Ooma HD3 Handset
No Yes

Ooma Linx
Yes Yes

Ooma DP1 desk phone
No Yes

Ooma Safety Phone
Yes Yes

Ooma Smart Security Door and Window Sensor**
Yes Yes

Ooma Smart Security Water Sensor**
Yes Yes

Ooma Smart Security Motion Sensor**
Yes Yes

Ooma Smart Security Garage Door Sensor**
Yes Yes

*Older models of the first generation Telo Base Station can run in either Legacy or New mode. Legacy mode supports only the Ooma HD1 handset as a DECT accessory. Newer models of the first generation Telo Base Station can only run in New mode.
**The first generation Telo Base Station can support up to three compatible Ooma Smart Security sensors. The second generation Telo Base Station can support up to 30 Ooma Smart Security sensors.

How can I change which add-ons my first generation Telo Base Station can pair with?

The type of add-on you synced with your Telo Base Station first will determine which group of devices your Telo Base Station is currently set up to use. You can update that preference by following the instructions in this article.