What is an ONT used for?

Learn > Fiber > What is an ONT used for?

Fiber optic technology doesn’t require a modem to get an Internet connection, it uses an ONT.

ONT, or Optical Network Terminal, is a device used within an FTTx link. That could be fiber to the home (FTTH) or fiber to the business (FTTB). The installation process of every system is unique and every subscriber is different. But the devices needed within the system are the same, such as the start and endpoints, which are the OLT and ONT. The OLT is the starting point on the Internet service provider’s (ISP) side. The ONT is the endpoint of the link on the customer’s side, either residential or commercial. The ONT is how you get an Internet connection on a fiber-optic network. 

Here is how the FTTx chain looks and where the ONT falls in the link:

For FTTH:

Optical line terminal (OLT) at your ISP’s central office sends data > Fiber optical cabling carries data upstream and downstream > ONT receives data at your home.

For FTTB:

Optical line terminal (OLT) at your ISP’s central office sends data > Fiber optical cabling carries data upstream and downstream > ONT receives data at your business/office building.

The ONT does three (3) main things:

Terminates the fiber-optic line at the customer premise

The ONT communicates to the OLT at your ISP’s central office via fiber optic cables. Data is delivered on upstream and downstream channels. 

De-multiplexes the signal
The fiber-optic signal comes through the line multiplexed, meaning as one signal. So, the ONT de-multiplexes that signal, or divides it, into its component parts: voice telephone, TV, and Internet access.  To complete the ONT installation, it is connected to your phones, TVs, and computers. 

Provides power to telephones
The ONT gets power from the customer premise, so if there is ever a power outage, the ONT would go down too. That is why the best ONT offerings include a battery backup so that customers can maintain their services during a power outage. 

In the market to install fiber technology in your home or office? Ask your ISP about Hitron’s offerings of ONT/ONU devices today to make home networking an easier, better experience overall. For more information on home networking solutions check out Hitron’s Learn Page.

Learn More about Fiber

5 Key Advantages of PON Internet

PON stands for passive optical network. It is a type of fiber-optic network. A PON Internet (shared fiber) system operates on an unpowered network (passive) meaning that it does not require any active components. Instead, it only uses fiber and passive components like...

Does FIOS use Ethernet or coax?

Learn > MoCA > Does FIOS use Ethernet or coax?Short answer, FiOS users fiber-optic cables to reach your home. A passive optical network (PON) can bridge to a devices on the customer premises within the individual terminating unit using technologies such as...

What is the Difference Between EPON and GPON?

Learn > Fiber > What is the Difference Between EPON and GPON? A passive optical network (PON) is a fiber network that only uses fiber and passive components like splitters and combiners rather than active components like amplifiers, repeaters, or shaping...

What is the Difference Between EPON and GPON?

Learn > Fiber > What is the Difference Between EPON and GPON? A passive optical network (PON) is a fiber network that only uses fiber and passive components like splitters and combiners rather than active components like amplifiers, repeaters, or shaping...

What is GPON and How Does it Work?

Learn > Fiber > What is GPON and How Does it Work? Optical fiber networks operate on different passive optical network (PON) standards.  A PON is a network system specific to fiber technology that delivers broadband network access to your home or business. One...

Related Articles

3