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ONT: Optical Network Terminal

An ONT is a media converter that is installed by Verizon either outside or inside your premises, during FiOS installation.

The ONT converts fiber-optic light signals to copper/electric signals.
Three wavelengths of light are used between the ONT and the Optical Line Terminal:

  • 1310 nm voice/data transmit
  • 1490 nm voice/data receive
  • 1550 nm video receive

Each ONT is capable of delivering:
  • FiOS Digital Voice VOiP service
  • Internet
  • Video

For a list of various ONTs, see: »Verizon FiOS FAQ »What are the different models of ONTs?


Your existing inside wiring for telephone, internet and video are connected to the ONT during installation.


The following picture shows typical connections and status indicators at the ONT:

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From left to right, RJ45 WAN connection, two POTS connections and coax connection


FiOS TV is always delivered over coax. Internet can be delivered over either coax or Ethernet, the standard being Ethernet.



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by drake See Profile edited by Branch See Profile
last modified: 2016-10-01 08:11:26