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What is MA5800 10G EPON network

| 2025-11-21|Back

Why 10G EPON is needed

10G EPON是在已有EPON技术标准上演进的增强下一代EPON技术，主要解决EPON网络的以下问题：

The continuous development of high-bandwidth service types have higher requirements for bandwidth, EPON technology can not provide sufficient bandwidth to meet the demand.
User-side access technology continues to innovate, user access bandwidth continues to increase, EPON technology will become a bandwidth bottleneck.
Splitting ratio, transmission distance, directly affect the network construction investment.

System Overview

Network Architecture

10G EPON follows the standard PON network architecture, as does EPON. P2MP architecture, as shown in Figure 1.

Figure 1 Network Structure

The 10G EPON network consists of OLT, ONU, and ODN:

OLT (Optical Line Terminal) is an aggregation device that is placed at the bureau end to terminate the PON protocol.
ONU (Optical Network Unit) is a user-side unit or terminal located on the client side to provide various interfaces to the user, providing a UNI interface to access user services, and an NNI interface to uplink to the OLT equipment.

< span class="notetitle" style="font-weight:bold;line-height:13px;font-size:12px;"> Description:
10G EPON supports access to four types of ONUs (downlink rate/uplink rate: 10G/10G, 10G/1G, 10G/2G, 1G/1G).
ODN (Optical Distribution Network) is composed of optical fiber, one or more Passive Optical Splitter (POS), connecting OLT and ONU.

System Transmission Principle

The 10G EPON network carries out single-fiber bi-directional data transmission through different wavelengths of upstream and downstream on the same ODN network, such as Fig. 2 Shown.

Figure 2 System transmission principle

The downlink sends the data by broadcast.
Uplink transmits data by TDMA with ONUs following time slots.

Networking Applications

10G EPON follows the P2MP network architecture of PON network, and the networking application is the same as EPON, as shown in Figure 1, which can be applied in the following networking scenarios:

Figure 1 FTTx Networking

FTTM (Fiber To The Mobility Base Station)
FTTO (Fiber To The Office)
FTTB (Fiber To The Building)
FTTC (Fiber To The Curb)
FTTW (Fiber To The WLAN)
FTTH (Fiber To The Home)

Network Planning

Background Information

Considering that the operator will directly build a new 10G EPON network or the existing network may have already deployed an EPON network, the need for a new 10G EPON network from the EPON network is very important. EPON network and need to evolve from EPON network to 10G EPON. This article introduces two commonly used networking scenarios, which users can choose based on actual scenarios and needs.

Networking Application 1: 10G EPON Separate Networking

Application introduction: 10G EPON service board only accesses 10G EPON ONU to realize 10G EPON separate networking. This solution is suitable for new scenarios.

10G EPON separate networking as Figure 1 shows that

Figure 1 10G EPON separate networking

Characteristics: a single ONU type (only 10G EPON ONUs), easy maintenance.

Networking Application 2: 10G EPON and EPON Hybrid Networking

Application Introduction: 10G EPON service single board accesses both 10G EPON ONUs and EPON ONUs, realizing 10G EPON and EPON hybrid FTTx networking and sharing ODNs. This solution is suitable for upgrading the bandwidth of EPON network or building new 10G EPON ONUs in the original EPON network.

10G EPON and EPON hybrid networking as Figure 2 shows that

Figure 2 10G EPON and EPON hybrid networking

Features:

ODN sharing to save resources.
Complex network element type (10G EPON ONU and EPON ONU coexist), complex maintenance.

Description:

For upgrading from EPON to 10G EPON scenarios, i.e., replacing the EPON veneer on the OLT with a 10G EPON veneer, and replacing the EPON ONU with a 10G EPON ONU (with an uplink rate of 10G EPON ONU of 10.3125 Gbit/s ), you need to note that:

According to the 10G EPON standard protocol, the uplink FEC is forced to be on at this time.
Turning on FEC will take up bandwidth overhead (for fixed bandwidth users, you need to consider the impact of the bandwidth overhead caused by turning on FEC on the user's bandwidth).

Precautions

Since 10G EPON ONUs and EPON ONUs can be mixed, the precautions for use are as follows:

在OLT上，10G EPON接入单板支持10G EPON ONU和EPON ONU。
在OLT上，EPON接入单板仅支持EPON ONU。

Note:

EPON ONU指支持IEEE802.3ah标准的ONU。

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