First Line Checks (Fibre to the Premises/FTTP)
Introduction
With the introduction of FTTP, Openreach now use ONT (Optical Network Termination) boxes. The ONT is the device that is used to terminate the fibre cable into the property, then connecting into the users CPE. Moving forwards, Openreach will install a version of the ONT that contains one data port and one voice port. This is after they disregarded the original models that came with 4 data ports and two voice ports. These legacy ONT devices will still be seen in some cases from their original installation.
The below diagram shows the external casing of the ONT followed by an internal view showing the ONT along with the Battery Back Up.
The below diagram shows the ports of both the ONT and the BBU.
Below is a diagram to physically show how the ONT fits into these new circuit types
Note - The ONT in the diagram shows the standard 1+1 (1 Data + 1 Voice) ports that Openreach will be using. Please be aware that some legacy 4+2 ONTs will still be in use.
Although the ONT is owned and maintained by Openreach, you can find below some information on diagnosing faults with the device to either confirm or rule it out of your checks if an issue is present with your FTTP circuit.
