OptiX OSN9800 HSC1 TN11HSC1 TN12HSC1 High Power Unidirectional Optical Supervisory Channel Board

Yantai Boxin International Trading Co., Ltd. is a professional comprehensive trading service provider for communication equipment.With warehouses established in Yantai and Hong Kong, we have built a complete and localized network for delivering communication products and services.In 2018, Yantai Boxin International Trading Co., Ltd. set up its international sales department in Yantai, China.Based in China, we operate in emerging markets across Southeast Asia, India, the Middle East, Africa, Europe, and the United States. 

Yantai Boxin International Trading Co., Ltd. supplies products to various telecom operators, meeting their needs for supplementing and expanding 2G/3G/4G/5G network stations.Our current equipment portfolio covers brands such as Nokia, Ericsson, Alcatel, Huawei, ZTE, ZTT, and FiberHome. 

We expand our international market share by offering high-quality products, excellent service, competitive pricing, and timely delivery.Feel free to contact us for more information.

Description du produit

1.Product Overview

1.Basic information of the board

Attribute specification description

OptiX OSN 9800 series intelligent optical transmission platform (compatible with OSN 8800/6800)

Board name: High precision system clock and synchronization unit

The functional positioning is to provide high-precision system clock and time synchronization signals for transmission devices, support IEEE 1588v2 protocol, and are the core components for building synchronous networks

Board type: System clock processing board

Adaptation subrack OSN 8800 T64/T32/T16 subrack, OSN 8800 universal platform subrack, OSN 6800 subrack

Occupy 1 slot

Front panel dimensions: height x width x depth: 264.6 mm x 25.4 mm x 220 mm

Weight 0.8 kg

Typical power consumption of 10.0 W

Maximum power consumption of 12.0 W (normal operation at maximum ambient temperature)

Working temperature -5°C to+55°C

Initial software version V100R003C00

Key features include IEEE 1588v2 high-precision time synchronization, physical layer clock synchronization, BITS interface, 1PPS+TOD interface, automatic clock source switching, clock quality level monitoring, and 1+1 hot backup

2.Interface specifications

Interface Identification Interface Type Quantity Function Description

BITS1 IN/BITS2 IN RJ45/SMB 2 receives external clock signals (2MHz/2Mbit) from the Building Integrated Timing Supply (BITS1) device

BITS1 OUT/BITS2 OUT RJ45/SMB 2 output system clock to external BITS devices or other network elements

1PPS+TOD IN RJ45 1 receives high-precision time synchronization signal: 1PPS (second pulse) and TOD (time information)

1PPS+TOD OUT RJ45 1 outputs high-precision time synchronization signal to other devices

The 1588v2 interface RJ45/SFP 2 supports the processing and forwarding of the IEEE 1588v2 protocol, and can be configured as an electrical or optical port

Alarm output DB9 1 outputs clock related alarm signals

System interface backplane connection - communicates with the main control board (SCC) and business board, distributes system clock

3.Core functional characteristics

Functional Module Technical Description System Value

IEEE 1588v2 supports high-precision time synchronization protocols and provides nanosecond level time synchronization accuracy, providing critical support for time sensitive businesses such as 5G mobile backhaul, smart grids, and financial transactions

Physical layer clock synchronization supports traditional BITS clock synchronization (2MHz/2Mbit), which complies with the ITU-T G.813 standard and is compatible with the synchronization requirements of existing SDH/OTN networks, achieving smooth evolution

Multiple clock source selection supports the selection of system clock from various sources such as BITS interface, 1588v2 interface, and line clock (extracted from business signals) to flexibly adapt to different network topologies and synchronization requirements, improving synchronization reliability

Automatic switching of clock source: When the primary clock source fails or deteriorates in quality, it automatically switches to the backup clock source to ensure that the system clock is never interrupted and improve network survivability

Clock quality level monitoring: Real time monitoring of the quality level (QL) of the selected clock source, following the ITU-T G.781 standard to automatically select the optimal clock source in complex synchronous networks, avoiding timing loops

SSM processing supports the extraction, processing, and forwarding of synchronous status messages (SSM) to achieve automatic configuration and fault protection of synchronous networks

The 1PPS+TOD interface provides standard 1PPS and TOD interfaces for easy integration with other high-precision time devices, simplifying the connection with external clock sources such as GPS/Beidou receivers

1+1 hot backup supports two HSC1 boards to form a primary backup relationship.In the event of a primary board failure, the backup board can take over the business in milliseconds without interruption, improving system availability

4.Performance indicators

Table 1: Clock synchronization performance

Parameter specification remarks

The frequency synchronization accuracy is better than ± 0.05 ppm when locked to a BIT or 1588v2 source

The frequency synchronization holding mode is better than ± 0.37 ppm (24 hours) in terms of holding ability when all external reference sources are lost

Time synchronization accuracy ± 100 ns (typical value) end-to-end IEEE 1588v2 time synchronization

BIT interface 2MHz/2Mbit complies with ITU-T G.703 standard

1PPS interface TTL level, pulse width 100ms

TOD interface RS-232, NMEA format

Table 2: Clock Source Priority Configuration

Clock source type priority (configurable) application scenarios

BITS1 obtains a highly stable clock from an external BITS device

BITS2 obtains a high stable clock from an external BITS device (backup)

Obtain time and frequency from the 1588v2 master clock in 1588v2 Master

Low line clock extracts clock from line service signals (such as STM-N/OTUK)

5.Monitoring and management functions

Monitoring Category Monitoring Parameter Management Function

Real time monitoring of the existence, quality level, and locking status of each clock source in synchronization with the network status

System clock status, current source of system clock, working mode (track/hold/free run), monitoring system clock health

Alarm management clock source loss, clock quality degradation, 1PPS loss, 1588v2 protocol anomaly fast fault location

Performance event clock source switching record, clock quality change record assist network optimization and fault diagnosis

6.Application scenarios

Core Value of Application Scenario Deployment Method

The 5G mobile carrier network is deployed at the aggregation layer and core layer nodes, serving as a 1588v2 boundary clock or transparent clock to provide nanosecond level time synchronization for 5G base stations, meeting the strict requirements of 3GPP for air interface synchronization

The deployment of smart grid in the power communication network provides high-precision time synchronization to meet the time synchronization needs of wide area measurement and fault location in the power grid

The financial special line is deployed in the financial data center's Internet network to provide accurate time stamps for time sensitive businesses such as high-frequency transactions

The upgrade of traditional SDH/OTN network is inserted into the existing network, gradually introducing 1588v2 synchronization compatible with traditional BITS synchronization, achieving a smooth evolution towards high-precision time synchronization

The core clock source node is connected to the GPS/Beidou receiver, serving as the main clock source for the entire synchronization network and providing high-precision and highly reliable time reference for the entire network

7.Maintenance and ordering information

Project Information

Component code TN11HSC1

Ordering instructions: When placing an order, it is necessary to confirm whether a matching clock cable (such as SMB to BNC) is needed

On site operation supports hot plugging, but the synchronization status of the two boards must be ensured during the main and backup switching

Suggestions for spare parts management: Configure spare parts at critical nodes in the network, such as the core clock source node

Software dependency requires support from the host software version (V100R003C00 and above)

Core Summary:

TN11HSC1 is a high-precision system clock and synchronization unit in the OSN 9800/8800/6800 platform.As the core component of the synchronization network, it integrates multiple key functions such as IEEE 1588v2 high-precision time synchronization, traditional BIT physical layer clock synchronization, automatic switching of multiple clock sources, and clock quality level monitoring.It provides reliable support for time sensitive businesses such as 5G mobile carriers, smart grids, and financial dedicated lines.

Core values and positioning:

Time synchronization enabler: Built in IEEE 1588v2 processing capability, providing nanosecond level time synchronization accuracy for 5G bearer networks.

Smooth Evolution Guarantee: Supports both traditional BIT synchronization and 1588v2, compatible with existing networks, and smooth upgrades.

High reliability: Automatic clock source switching and 1+1 hot backup design ensure that the system clock never interrupts.

Intelligent operation and maintenance: clock quality level monitoring, SSM processing, achieving automatic configuration and fault protection of synchronous networks.

Application suggestion:

This board is the core component for building high-precision synchronization networks in the OSN 9800/8800/6800 wavelength division system, and is particularly suitable for 5G carriers, smart grids, financial dedicated lines, and other scenarios that require high-precision time synchronization. For the core clock source node, it is recommended to configure GPS/Beidou receivers as external reference sources and adopt a 1+1 primary and backup configuration to improve reliability.