How The FTTP Network Functions

Passive Optical Network (PON)

A common FTTP architecture is a PON, which uses unpowered optical splitters to divide a single fibre from the exchange to multiple end-users. A splitter can serve between 32 and 128 premises. This passive design reduces complexity and cost by minimising the need for active electronic components.

Uncontended Bandwidth

FTTP often operates on a 1:1 contention ratio, meaning the bandwidth is dedicated and not shared with other users on the network during peak usage times. This ensures consistent speeds and eliminates performance degradation caused by network congestion.

Minimal Latency

Because data is transferred via light over a direct fibre path, FTTP significantly reduces latency (the time delay between sending and receiving data). This is essential for time-sensitive applications like video conferencing, VoIP and online trading.

Key Components

The FTTP infrastructure consists of several critical elements:

Optical Line Terminal (OLT)

Located at the provider’s exchange, the OLT is the hub that receives data from the wider network. It broadcasts data downstream to all premises on a fibre and aggregates the upstream data from each.

Optical Network Termination (ONT)

The ONT is the device installed inside the customer’s building that converts the optical signal from the fibre cable into a standard Ethernet signal, which is then connected to a router.

Connectorised Block Terminal (CBT)

This device acts as the final connection point between the local fibre network and the fibre optic cable that is run to your premises.

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