Huawei GPON OLT MA5683T Optical line terminal

SmartAX MA5683T is a Gigabit Passive Optical Network (GPON) integrated optical access product.

This series features the industry’s first aggregation Optical Line Terminal (OLT), integrating ultra-high aggregation and switching capabilities, supporting 3.2T backplane capacity, 960G switching capacity, 512K MAC addresses, and a maximum of 44-channel 10 GE access or 768 GE ports.

Lowers Operations and Maintenance (O&M) costs with software versions for all three models that are fully compatible with service boards, and reduces quantities of stock required for spare parts.

Key Features

Convergence and access integration

• Provides super large convergence switching capacity. Specifically, an MA5600T series device supports 1.5 Tbit/s backplane capacity, 960 Gbit/s switching capacity, and 512,000 MAC addresses.
• Provides super high-density cascading capability. Specifically, an MA5683T device support a maximum of 24 x 10GE or 288 GE services, with no additional convergence switches.

High reliability

• Provides highly reliable networking capabilities and ensures dual-OLT hot backup, remote disaster tolerance, and service upgrades without interruption.
• Provides comprehensive Quality of Service (QoS) functions and supports traffic classification management, priority control, and bandwidth control. The Hierarchical-Quality of Service (H-QoS) function meets various Service Level Agreement (SLA) requirements of commercial customers.
• Provides an End-to-End (E2E) highly reliable design, enabling Bidirectional Forwarding Detection (BFD), Smart Link, Link
Aggregation Control Protocol (LACP) redundancy protection and GPON type B/type C line protection in the upstream direction.

Multi-scenario access

•Supports access of multiple E1 private line services, and Native Time-Division Multiplexing (TDM) or Circuit Emulation Services over Packet (CESoP)/ Structure-Agnostic TDM over Packet (SAToP) function.
• Supports the Emulated Local Area Network (ELAN) function and Virtual Local Area Network (VLAN)-based internal traffic exchange, satisfying enterprise and community network application requirements.
• Supports non-convergence access of Internet Protocol television (IPTV) users. One subrack supports 8,000 multicast users and 4,000 multicast channels.

Smooth evolution

•Supports GPON, 10G Passive Optical Network (PON), and 40G PON on a platform, enabling smooth evolution and achieving ultra-bandwidth access.
• Supports IPv4/IPv6 dual stacks and IPv6 multicast, enabling smooth evolution from IPv4 to IPv6.

Energy saving

• Uses special chips for conserving power. Specifically, 16 ports on a GPON board consume less than 73 W of power.
• Supports idle board automatic power-off and intelligent fan speed adjustment, effectively lowering idle board power consumption.

Powerful integrated GPON/EPON access capability

1. EPON access capability 

The point to multi-point (P2MP) architecture is used to support the passive optical

transmission over Ethernet. Symmetrical upstream and downstream rates of 1.25 Gbit/s are supported to provide the high-speed broadband services, meeting the bandwidth

requirements of access users.

In the downstream direction, the bandwidth is shared by different users in the encrypted

broadcast mode. In the upstream direction, time division multiplex(TDM) is used to share the bandwidth.

The MA5683T series support dynamic bandwidth allocation (DBA) with the granularity of 64 kbit/s. Therefore, the bandwidth of ONT terminal users can be dynamically allocated based on the user requirements.

The EPON system uses the passive optical transmission technology, and the optical splitter uses the P2MP mode and supports a split ratio of 1:64.

The supported transmission distance is up to 20 km.

The ranging technologycan be scheduled ranging, automatic ranging, or initial ranging.


GPON access capability

High rate is supported. The downstream rate is up to 2.488 Gbit/s and the upstream rate is up to 1.244 Gbit/s.

Long distance is supported. The maximum physical transmission distance of the ONT is 60 km. The physical distance between the farthest ONT and the nearest ONT can be up to 20 km.

High split ratio is supported. The 8-port GPON access board supports a split ratio of 1:128, which increases the capacity and saves the optical fiber resources.

High densityis supported. The MA5683T series provide the 8-port or 4-port GPON access

board to increase the system capacity.

The H-QoS (hierarchical quality of service) function is supported to meet the SLA

requirements of various commercial customers.


Powerful QoS capability

The MA5683T series provide the following powerful QoS solutions to facilitate the

management of various services:

Supports prioritycontrol (based on the port, MAC address, IP address, TCP port ID, or UDP port ID), priority mapping and modification based on the ToS field and 802.1p, and DSCP differentiated services.

Supports bandwidth control (based on the port, MAC address, IP address, TCP port ID, or

UDP port ID) with a control granularity of 64 kbit/s.

Supports three queue scheduling modes: priority queue (PQ), weighted round robin (WRR), and PQ+WRR.

Supports HQoS, which assures the multi-service bandwidth for multiple users: The first level assures the user bandwidth, and the second level assures the bandwidth for each service of each user. This ensures that the assured bandwidth is allocated absolutely and the burst bandwidth is allocated fairly.


Comprehensive security assurance measures

The MA5683T series meet the securityrequirements of the telecommunication services, fully use the security protocols, and fully ensure the security of the system and the user.

1. System security measure

Protection against the DoS (denial of service) attack

MAC (media access control) address filtering

Anti-ICMP/IP packet attack

Source address routing filtering


2. User security measure

DHCP (Dynamic Host Configuration Protocol) Option 82 to enhance the DHCP security

Binding between MAC/IP addresses and ports

Anti-MAC spoofing and anti-IP spoofing

Authentication based on the serial number (SN) and password of the ONU/ONT

Triple churning encryption

Encrypted broadcast transmission in the GPON downstream direction for different users,

such as AES (advanced encryption standard) 128-bit encryption

GPON type B OLT dual homing

Smart link and monitor link for the network with dual upstream channels

Flexible network topology

As a multi-service access platform, the MA5683T series support multiple access modes and multiple network topologies to meet users’ network topologyrequirements on different

environment and services.

Carrier-class reliability design

The system reliability of the MA5683T series is taken into consideration in the system,

hardware, and software designs to ensure that the device runs in the normal state. The

MA5683T series:

Provides the lightning-proof and anti-interference functions.

Supports fault pre-warning on the exhaustive (consumed) units and parts, such as the fan,

power supply, and battery.

The 1+1 (type B) protection for the PON port and the 50 ms level service protection switchover for the backbone optical fiber are supported.

Supports in-service upgrade.

Supports high temperature detection to ensure the system safety.

The functions of querying the board temperature, setting the temperature threshold, and high temperature shutdown are supported.

Adopts 1+1 redundancy backup for the control board and the upstream interface board.

Supports hot swappable for all service boards and the control boards.

Provides soft-start circuit, protective circuit, current-limit protection, and short circuit protection

for the input power of the boards in the subrack to protect the boards against lightning strikes and surges.

Supports GPON type B/type C OLT dual homing.

Supports smart link and monitor link for the network with dual upstream channels.

Technical Specifications

System performance

Backplane capacity: 3.2 Tbit/s; switching capacity: 960 Gbit/s; MAC address capacity: 512K Layer 2/Layer 3 line rate forwarding

BITS/E1/STM-1/Ethernet clock synchronization mode and IEEE 1588v2 clock synchronization mode

EPON access board

Adopts the design of 4-port or 8-port high-density board.

Supports the SFP pluggable optical module (PX20/PX20+ power module is preferred).

Supports a maximum split ratio of 1:64.

Provides the capability of processing 8 k streams.

Supports optical power detection.

Adopts the unique traffic processing technologyto meet the requirement of processing

various VLANs.

GPON access board

Adopts the design of 8-port high-density GPON board.

Supports the SFP pluggable optical module (class B/class B+/class C+ power module is


Supports 4 k GEM ports and 1 k T-CONTs.

Supports a maximum split ratio of 1:128.

Supports the detection and isolation of the ONT that works in the continuous mode.

Supports the flexible DBA working mode, and the low-delay or high-bandwidth efficiency


100M Ethernet P2P access board

Supports 48 FE ports and the SFP pluggable optical module on each board.

Supports the single-fiber bidirectional optical module.

Supports the DHCP option 82 relay agent and the PPPoE relay agent.

Supports Ethernet OAM.

Subrack dimensions (Width x Depth x Height)

MA5683T subrack: 442 mm x 283.2 mm x 263.9 mm

Running environment

Operating ambient temperature: –25°C to +55°C

Power input

–48 VDC and dual power input ports (supported)

Operating voltage range: –38.4 V to –72 V


 Dimensions (H x W x D) 263 mm x 442 mm x 283.2 mm
 Operating Environment  –40°C to +65°C
5% RH to 95% RH
 Power –48V DC power input
Dual-power supply protection
Operating voltage range of –38.4V to –72V
 Switching Capacity — Backplane Bus  1.5 Tbit/s
 Switching Capacity — Control Board  960 Gbit/s
 Access Capacity  24 x 10G GPON
96 x GPON
288 x GE
 Port Type
  • Upstream ports: 10 GE optical and GE optical/electrical ports
  • Service ports: GPON optical port, P2P FE optical port, P2P GE optical port, and Ethernet optical port
 System Performance
  • Layer 2/Layer 3 line-rate forwarding
  • Static route, RIP, OSPF, and MPLS
  • Clock synchronization schemes: BITS, E1, STM-1, Ethernet clock synchronization, 1588v2, and 1PPS + ToD
  • Maximum split ratio of 1:256
  • Maximum logical distance between devices: 60 km