The type and style of ONTs Verizon installs varies depending on the installation. For a list of specific models, see: »Verizon FiOS FAQ »What are the different models of ONTs?.

Note that in apartment and condo buildings where fiber is run to each unit, one of the SFU (Single Family Unit) or SOHO (Single Office/Home Office) setups are used. MDU (Multi-Dwelling Unit) ONTs were used instead of running fiber to each unit in condos and apartments, however, Verizon has phased that out in favor of Fiber-to-the-Unit.

SFU Exterior (ONT Outside of Home):

An ONT is installed outside. The battery backup unit (BBU) and power supply (PS) are installed inside. The PS must be within 6 feet of a grounded outlet. The PS can be up to 50 feet from the BBU. SFU Exterior installs are now only done if an SFU Interior is not feasible.

SFU Interior (ONT Wall-Mounted Inside of Home):

An All-In-One ONT is usually used on house interior installs. The ONT, BBU (if applicable) and PS are in a single enclosure. SFU Interior is the most common type of install.

SFU Desktop (ONT Self-Standing Inside of Home):

A small ONT is placed inside the house, not wall mounted. This setup is used if wall space is limited. Desktop ONTs can also be wall mounted inside or outside, in an enclosure. This makes them the most versatile, and therefore most common type of ONT used.

SOHO Exterior (ONT Outside of Office):

Same as SFU Exterior, except the ONT has extra Ethernet and Telephone ports for the Office/Small Business.

Phased out:

MDU Shared (ONT in Shared Location for Apartments and Condos):

A shared ONT is placed in the apartment or condo building. Speeds are limited to anywhere from 15/5 to 75/75, depending on the ONT, and FiOS Digital Voice is not available. There is, however, FiOS Freedom Essentials, which isn't VoIP.