PON Principles:

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(Almost) all PON types obey the same basic principles

OLT and ONU consist of

Layer 2 (Ethernet MAC, ATM adapter, etc.)
optical transceiver using different ls for transmit and receive
optionally: Wavelength Division Multiplexer

Downstream transmission

OLT broadcasts data downstream to all ONUs in ODN
ONU captures data destined for its address, discards all other data
encryption needed to ensure privacy

Upstream transmission

ONUs share bandwidth using Time Division Multiple Access
OLT manages the ONU timeslots
ranging is performed to determine ONU-OLT propagation time

Additional functionality

Physical Layer OAM
Autodiscovery
Dynamic Bandwidth Allocation

Shahed

Hi! I am Shahed Israr. I try to help GPON Technology users with their queries and provide them with relevant and accurate information to the best of my ability. My main goal is to assist and enhance GPON Technology user and help people find the answers they're looking for quickly and easily.

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