OSN 3500 is a new-generation optical transmission system developed by Huawei. It adopts a unified switching architecture and can function as an MPLS/MPLS-TP-based packet device or a TDM device. When working with other devices of Huawei, OSN 3500 supports various networking modes, including the pure packet mode, hybrid networking (packet + TDM) mode, and pure TDM mode, achieving optimal processing for packet services and traditional SDH services. Thus, OSN 3500 efficiently transmits voice and data services over the same platform.
Version Description
The HSNS3 board is available in one functional version, namely, N1.
Version Mapping
Board | Start Version |
---|---|
N1HSNS3 | V200R015C20 |
Board Updates
This section describes the hardware updates in V200R013C30 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 V200R015C30
Type | Description |
---|---|
Add | New add the function "automatic laser shutdown (ALS)". |
Hardware Updates in V200R015C20
Update Type | Description |
---|---|
New
|
N1HSNS3 boards are added.
|
Application
An HSNS3 board can transmit and receive 4x10GE signals (supporting SDH service transmission, with the SDH services being specified at STM-16/STM-64 granularities), boosting network bandwidths and achieving flexible, large-granularity traffic grooming.
Functions and Features
An HSNS3 board receives mixed signals of STM-16/STM-64 services with the total bandwidth not higher than 40 Gbit/s from the backplane, encapsulates them into ODU1/ODU2/ODU3/OTU3 units, and transmits them out through an optical port.
Table 1 and Table 2 list the functions and features supported by an HSNS3 board.
Function and Feature | Description |
---|---|
Basic functions |
NOTICE:
The board capacity is license-controlled. One license provides a 10 Gbit/s capacity and one board provides a maximum capacity of 40 Gbit/s.
The board license is granted on a per-board basis.
|
Optical module specifications |
|
Error correction coding |
NOTE:
HSNS3 boards using different error correction coding schemes cannot interconnect with each other.
|
Synchronization | Supports four channels of SDH clock signals or one channel of OTN clock signals. |
Overhead processing | Supports processing of D1-D12 bytes by virtual ports 51, 52, 53, 54, 55, 56, 59, and 63, and processing of D1-D3 bytes by the other eight virtual ports. |
Alarm monitoring and performance monitoring | Monitors the bias current and operating temperature of lasers, and the optical power. |
Automatic fiber search | Supported |
Maintenance features |
|
Automatically switched optical network (ASON) | Only virtual ports 51, 52, 53, 54, 55, 56, 59 and 63 support SDH ASON. |
Function and Feature | Description |
---|---|
Basic functions | Receives a maximum of 4xSTM-16 or 4xSTM-64 SDH service signals from the backplane, encapsulates the received signals into ODU1/ODU2/ODU3/OTU3OTU3 units, and sends out the multiplexed signals from its optical port.
The service mapping paths are as follows:
|
Limitations on virtual ports |
Four virtual port IDs 51, 55, 59 and 63 can be configured.
|
Service processing | Supports VC-12, VC-3, VC-4, VC-4-4c, VC-4-8c, VC-4-16c, and VC-4-64c services (VC-4-4c, VC-4-8c, VC-4-16c, and VC-4-64c services are concatenated services). |
Overhead processing |
|
Protection schemes |
|
Maintenance features | Supports inloops and outloops on VC-4 paths. |
Working Principle and Signal Flow
An HSNS3 board consists of an SDH processing module, an OTN processing module, an O/E conversion module, a control and communication module, and a power module.
Figure 1 shows the functional block diagram of an HSNS3 board.
Receive Direction
The O/E conversion module receives one channel of optical OTU3 signals from optical port IN, converts the optical OTU3 signals into electrical OTU3 signals, and sends the electrical OTU3 signals to the OTN processing module. The OTN processing module converts the electrical OTU3 signals into four channels of electrical signals and sends the electrical signals to the SDH processing module. The SDH processing module decodes the electrical signals and converts the serial signals into parallel signals. For SDH service signals, the SDH processing module directly sends the signals to a cross-connect board through the backplane.
Transmit Direction
A cross-connect board sends 40 Gbit/s hybrid SDH service signals to the backplane, which then sends SDH service signals to the SDH processing module. The OTN processing module converts the signals into one channel of electrical OTU3 signals and sends the signals to the O/E conversion module. The O/E conversion module converts the one channel of electrical OTU3 signals into one channel of optical signals and sends the optical signals to optical port OUT.
O/E Conversion Module
This module converts internal electrical signals into optical OTU3 signals and performs the reverse process.
OTN Processing Module
This module performs OTU3 framing, OTU3 overhead processing, and forward error correction (FEC)/enhanced forward error correction (EFEC) coding and decoding.
SDH Processing Module
SDH processing module: encapsulates VC signals and processes the signal overheads.Control and Communication Module
This module performs the following functions:- Controls all operations performed on the board.
- Controls all operations performed on each module of the board according to central processing unit (CPU) instructions.
- Collects information about alarms, performance events, working status, and voltage monitoring from each functional module of the board.
Clock Module
This module traces the system reference clock and generates working clocks required by each chip.
Power Supply Module
This module converts the direct current (DC) power supplied by the backplane into voltages required by each module of the board.
Front Panel
An HSNS3 board has indicators, an optical port, a bar code, and a laser hazard level label on its front panel.
Diagram of the Front Panel
Figure 1 shows the front panel of an HSNS3 board.
Indicators
- Board hardware status indicator (STAT) - two colors (red and green)
- Service activation status indicator (ACT) - one color (green)
- Board software status indicator (PROG) - two colors (red and green)
- Service alarm indicator (SRV) - three colors (red, green, and yellow)
For the meanings of the indicators, see Alarm Indicators on the Boards.
Valid Slots
An HSNS3 board must be installed in valid slots. Otherwise, the board cannot work properly.
An HSNS3 board occupies two slots and can be installed slots 7 and 8 or slots 11 and 12. The slot ID of an HSNS3 board displayed on the NMS is the larger one between the two IDs of the slots that house the HSNS3 board.
Slot Valid for the HSNS3 | Corresponding Logical Slot |
---|---|
slot 7 to slot 8 | slot 8 |
slot 11 to slot 12 | slot 12 |
Technical Specifications
The technical specifications of HSNS3 boards include optical port specifications, laser hazard level, mechanical specifications, and power consumption.
Port Specifications
Supported Wavelengths
HSNS3 boards support the following wavelengths:
- 1271 nm, 1291 nm, 1311 nm, and 1331 nm when the transmission distance is 10 km or 40 km
- 1531.12 nm, 1537.4 nm, 1543.73 nm, and 1550.12 nm when the transmission distance is 80 km
NOTE:
An optical module supporting a transmission distance of 40 km or 10 km cannot interconnect with an optical module supporting a transmission distance of 80 km.
Laser Hazard Level
The laser hazard level of the optical port on an HSNS3 board is CLASS 1. That is, the maximum launched optical power of the optical port is lower than 10 dBm (10 mW).
Mechanical Specifications
The mechanical specifications of HSNS3 boards are as follows:
- Dimensions (H x W x D): 261.4 mm x 50.3 mm x 235.2 mm
- Weight: 2.3 kg
Power Consumption
The maximum power consumption of an HSNS3 board at room temperature (25ºC) is 55 W.
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