Version Description

The available functional versions of the HSC1 board are TN11 and TN12.

Mapping Between the Board and OptiX OSN 9800 Universal Platform Subrack

The following provides the board(s) supported by the product. However, the availability of the board(s) is subject to PCNs. For PCN information, contact the product manager at your local Huawei office.

Differences Between Versions

TN11HSC1 and TN12HSC1 have different transmission rates and specifications. For details, see HSC1 Specifications.

Substitution Relationship

The HSC1 boards of different versions cannot replace each other.

Update Description

This section describes the hardware updates in V100R001C01 and later versions as well as the reasons for the updates. Any product versions that are not listed in the document means that they have no hardware updates.

Hardware Updates in V100R002C10&V100R002C00SPC810

Hardware Updates in V100R001C20

Hardware Updates in V100R001C01

Application

As an OSC board, the HSC1 board processes one OSC signal in one direction. The HSC1 board is usually used at an OTM site. To achieve bidirectional transmission of the OSC signal at an intermediate NE, one pair of HSC1 boards is required for the NE.

Figure 1 illustrates the position of the HSC1 board in a WDM system.

Figure 1 Position of the HSC1 board in a WDM system 

In a WDM network that uses the OSC channel for optical performance surveillance, NEs transmit monitoring and management information over the OSC channel. For a network shown in Figure 1, the user can log in to NE1 through the Ethernet to directly manage NE1. NE2 and NE3 are remote NEs and can be remotely managed through NE1 using the OSC channel. In this manner, the user can manage the entire network.

On NE1, the SCC board sends the local monitoring and management information to the HSC1 board. Then the HSC1 board converts the monitoring and management information into an OSC signal and sends the signal to the FIU board. The FIU board multiplexes the OSC and main channel signals onto the line for transmission.

On NE2, the FIU boards demultiplex the OSC and main channel signals coming from the line and send the two OSC signals to the HSC1 boards. Then the HSC1 boards recover the monitoring and management information from the two OSC signals and send this information to the SCC board for processing.

On NE3, the OSC signal processing is similar to that on NE1.

For an OptiX OSN 9800 only the optical supervisory channel boards on the main subrack supports the orderwire function.

A subrack supports only one orderwire and on the U2000 the orderwire must be configured in Settings for the First Orderwire Phone.

 NOTE:

The transmit and receive stations must use the HSC1 boards of the same version for interconnection because the TN12HSC1 and TN11HSC1 boards cannot be interconnected.

Functions and Features

The HSC1 board is mainly used to processes and regenerates one OSC optical supervisory signal in one directions.

Table 1 describes the functions and features of the HSC1 board.

Table 1 Functions and features of the HSC1 board

Working Principle and Signal Flow

The HSC1 board consists of an optical receiver, optical transmitter, CMI/FEC decoder, CMI/FEC encoder, overhead processing module, control and communication module, and power supply module.

Figure 1 shows the functional modules and signal flow of the TN11HSC1 board.

Figure 2 shows the functional modules and signal flow of the TN12HSC1 board.

Figure 1 Functional modules and signal flow of the TN11HSC1 board 

Figure 2 Functional modules and signal flow of the TN12HSC1 board 

Signal Flow

The optical receiver converts the OSC signal coming from the associated FIU board into an electrical signal and directs the electrical signal to the CMI decoder. After the CMI decoding is completed, the electrical signal enters the overhead processing module. Then the overhead processing module extracts monitoring and management information from the electrical signal and sends them to the SCC board for processing. After the SCC board processes the monitoring and management information, the overhead processing module sends the electrical signal to the CMI encoder. After the CMI encoding is completed, the optical transmitter converts the electrical signal back to an optical supervisory signal.

Signal flow of the TN11HSC1 board

The optical receiver converts the OSC signal coming from the associated FIU board into an electrical signal and directs the electrical signal to the CMI decoder. After the CMI decoding is completed, the electrical signal enters the overhead processing module. Then the overhead processing module extracts monitoring and management information from the electrical signal and sends them to the SCC board for processing. After the SCC board processes the monitoring and management information, the overhead processing module sends the electrical signal to the CMI encoder. After the CMI encoding is completed, the optical transmitter converts the electrical signal back to an optical supervisory signal.

Signal flow of the TN12HSC1 board

The optical supervisory signal from the FIU board is converted into an electrical signal by the O/E module. After FEC decoding, the electrical signal enters the supervisory signal processing module. The supervisory signal processing module extracts the supervisory information from the electrical signal and sends the supervisory information to the SCC board for processing. The overhead bytes processed by the SCC board are sent to the FEC module for encoding. The E/O module then converts the overhead bytes received from the FEC encoding module into an OSC signal.

Module Functions

Optical receiver

Converts the OSC signal into an electrical signal.

Optical transmitter

Converts the electrical signal back to an OSC signal.

FEC decoding/encoding module

Performs FEC decoding/encoding.

CMI decoder/encoder

Performs CMI decoding/encoding for the 2 Mbit/s signals.

Overhead processing module

Extracts monitoring and management information from the electrical signal and sends them to the SCC board for processing. After the SCC board processes the monitoring and management information, this module sends the electrical signal to the CMI encoder.

Supervisory signal processing module: Encapsulates electrical supervisory signals into OTU frames, and processes overheads.

Control and communication module

Controls board operations.

Controls the operations on each module of the board according to CPU instructions.

Collects information about alarms, performance events, working states, and voltages from functional modules on the board.

Communicates with the SCC board.

Power supply module

Converts the DC power supplied from the backplane into appropriate power required by each module on the board.

Front Panel

There are indicators and interfaces on the front panel of the HSC1 board.

Appearance of the Front Panel

Figure 1 shows the front panel of the TN11HSC1 board.

Figure 2 shows the front panel of the TN12HSC1 board.

Figure 1 Front panel of the TN11HSC1 board 

Figure 2 Front panel of the TN12HSC1 board 

Indicators

Four indicators are present on the front panel:

Board hardware status indicator (STAT) - triple-colored (red, green, yellow)

Service active status indicator (ACT) - dual-colored (red, green)

Board software status indicator (PROG) - dual-colored (red, green)

Service alarm indicator (SRV) - triple-colored (red, green, yellow)

For details about these indicators, see Board Indicators.

Interfaces

Table 1 describes each interface on the HSC1 board.

Table 1 Interfaces on the HSC1 board

Laser Hazard Level

TN11HSC1: the laser hazard level of the board is HAZARD LEVEL 1, indicating that the maximum power launched by the board is less than 10 dBm (10 mW).

TN12HSC1: the laser hazard level of the board is HAZARD LEVEL 1M, indicating that the maximum power launched by the board ranges from 10 dBm (10 mW) to 21.3 dBm (136 mW).

Valid Slots

The HSC1 board is a single-width board (requiring one slot).

Table 1 lists the valid slots for the HSC1 board.

Table 1 Valid slots for the HSC1 board

Characteristic Code for the HSC1

The characteristic code for the HSC1 board contains twelve characters, indicating the wavelength range and number of optical ports.

Table 1 provides detailed information about the characteristic code.

Table 1 Characteristic code for the HSC1 board

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