Huawei OSN 3500 SLQ16 N1SLQ16 N2SLQ16 N4SLQ16 Price

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 SLQ16 is available in three functional versions, namely, N1, N2, and N4. The N2SLQ16 is discontinued.

Table 1 describes the versions of the SLQ16.

Table 1 Versions of the SLQ16

Item	Description
Functional versions	The SLQ16 is available in three functional versions, namely, N1, N2, and N4.
Differences	Specifications of optical interfaces: CWDM and DWDM colored optical interfaces. Specifications of optical modules: single-fiber bidirectional optical modules. Service processing: AU-3 service processing. Maintenance features: loopbacks on VC-4 paths and TCM function.
Substitution	When the AU-3 services and TCM function are not required, the N1SLQ16 and N2SLQ16 can be substituted with each other. The N4SLQ16 supports the board version replacement function to substitute for the N1SLQ16/N2SLQ16.

 NOTE:

When you configure the MSP or SNCP, you cannot configure the N1SLQ16 as the protection board if the working board is the N2SLQ16 on which the TCM function is enabled or AU-3 services are configured. Otherwise, the services are interrupted when a switching operation is performed.

Version Mapping

Board	Start Versiona
N1SLQ16	V100R006C01
N2SLQ16	V100R006C01
N4SLQ16	V100R010C03
a: If there is replacement relationship between boards, the start version of the replaced board prevails.

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.

Application

The SLQ16 is a line board. The SLQ16 can be used on the OptiX OSN equipment series to transmit and receive STM-16 optical signals. The SLQ16 converts the received optical signals into electrical signals and sends the electrical signals to the cross-connect side. In addition, the SLQ16 converts the electrical signals sent from the cross-connect side into optical signals and transmits the optical signals.

Figure 1 shows the application of the SDH processing boards. The SDH processing boards can form a ring network or a chain network in the system.

Figure 1 Networking and application of the SDH processing boards

Functions and Features

The SLQ16 receives and transmits 4xSTM-16 optical signals, processes overhead bytes, and performs the MSP.

Table 1 describes the functions and features of the SLQ16.

Table 1 Functions and features of the SLQ16

Function and Feature	Description
Basic functions	Transmits and receives 4xSTM-16 optical signals.
Specifications of the optical interface	Supports different types of standard optical interfaces, namely, the I-16, S-16.1, L-16.1, and L-16.2. The characteristics of the optical interfaces comply with ITU-T G.957 and ITU-T G.692. The N4SLQ16 supports the CWDM and DWDM colored optical interfaces. The optical interface uses the LC connector. The CWDM optical interface supports the transmission distance of 80 km, and the DWDM optical interface supports the transmission distances of 120 km.
Specifications of the optical module	Supports the detection and query of the information about the optical module. Provides the ALS function. The optical interface supports the setting of the on/off state of a laser. Supports the usage and detection of the SFP optical module, which facilitates the maintenance and upgrading of the optical module. The N4SLQ16 supports the single-fiber bidirectional optical module, and the single-fiber bidirectional optical module does not support loopbacks at the optical interface by using fiber jumpers.
Service processing	Supports the VC-12 services, VC-3 services, VC-4 services, VC-4-4c concatenation services, VC-4-8c concatenation services, and VC-4-16c concatenation services. The N2SLQ16 supports the AU-3 services.
Overhead processing	Processes the section overheads of the STM-16 signals. Supports the configuration of the D1-D12, E1, and E2 bytes as transparent transmission bytes or into other unused overheads bytes. Supports the transparent transmission and termination of the path overheads. Supports the setting and query of the J0, J1, and C2 bytes. Supports one to four channels of ECC communication.
Alarms and performance events	Reports various alarms and performance events, which facilitates the management and maintenance of the equipment.
Specifications of the REG	Does not support the REG.
Protection schemes	Supports the Two-fiber ring MSP. Supports the Four-fiber ring MSP. Supports the Linear MSP. Supports the SNCP. Supports the SNCMP. Supports the SNCTP. Supports the fiber-shared virtual trail protection. Supports the fiber-shared MSP and processes eight sets of K bytes. A single optical interface can process two sets of K bytes. One SLQ16 supports a maximum of eight MSP rings.
Maintenance features	Supports inloops and outloops at optical interfaces. The N1SLQ16 supports inloops and outloops on VC-4 paths. The N4SLQ16 supports inloops and outloops on VC-4 paths. Supports warm resets and cold resets. The warm reset does not affect services. Supports the query of the manufacturing information of the board. Supports the in-service loading of the FPGA. Supports the upgrade of the board software without affecting services. Supports the press-to-collect function in fault data collection. The N2SLQ16 supports the TCM function. The N4SLQ16 supports detection and query of the voltage. Supports the PRBS function. For details, see Availability. Hot board swapping.

Working Principle and Signal Flow

The SLQ16 consists of the O/E converting module, MUX/DEMUX module, SDH overhead processing module, logic and control module, and power module.

Figure 1 shows the functional block diagram of the SLQ16 by describing how to process 1xSTM-16 signals.

Figure 1 Functional block diagram of the SLQ16

PLL: phase-locked loop	SPI: SDH physical interface	SDH: synchronous digital hierarchy
RST: regenerator section termination	MST: multiplex section termination	MSA: multiplex section adaptation
HPT: higher order path termination	-	-

O/E Converting Module

• Converts the received optical signals into electrical signals, in the receive direction.
• Converts the electrical signals into SDH optical signals, and then sends the SDH optical signals to fibers for transmission, in the transmit direction.
• The SPI detects the R_LOS alarm and provides the laser shut down function.

MUX/DEMUX Module

• In the receive direction, the DEMUX part demultiplexes the high rate electrical signals into multiple parallel electrical signals, and recovers the clock signal at the same time.
• In the transmit direction, the MUX part multiplexes the parallel electrical signals received from the SDH overhead processing module into high rate electrical signals.

SDH Overhead Processing Module

this module includes the RST, MST, MSA, and HPT sub-modules. This module provides the inloop and outloop functions.

• RST sub-module
  • In the receive direction, the RST sub-module terminates the regenerator section overhead (RSOH). That is, the RST sub-module detects the frame alignment bytes (A1 and A2), descrambles all the bytes except the first line of the RSOH, restores and checks the regenerator section trace byte (J0), and checks the B1 byte.
  • In the transmit direction, the RST sub-module generates the RSOH. That is, the RST sub-module writes bytes such as A1, A2, and J0, calculates and writes the B1 byte, and scrambles all the bytes except the first line of the RSOH.
• MST sub-module
  • In the receive direction, the MST sub-module terminates the multiplex section overhead (MSOH). That is, the MST sub-module detects K2 bytes, and upon errors, generates MS_AIS or MS_RDI alarms; it also verifies B2 bytes, and upon errors, generates B2_SD or B2_EXC alarms and sends MS_REI signals to its opposite end.
  • In the transmit direction, the MST sub-module generates the MSOH. That is, the MST sub-module writes bytes such as E2, D4-D12, K1, K2, S1, and M1, and calculates and writes the B2 byte.
• MSA sub-module
  • In the receive direction, the MSA sub-module de-interleaves the administration unit group (AUG), divides an AUG into N AU-4s, detects the administration unit-loss of pointer (AU_LOP) alarm and the administration unit-alarm indication signal (AU_AIS) alarm, and performs pointer justifications.
  • In the transmit direction, the MSA sub-module assembles the AUG and generates the AU-4. N AU-4s are multiplexed into an AUG through byte interleaving.
• HPT sub-module
  • In the receive direction, the HPT sub-module terminates the path overhead (POH). That is, the HPT sub-module verifies B3 bytes, and upon errors, sends HP_REI signals to its opposite end; it also detects J1 and C2 bytes, and upon errors, generates HP_TIM, HP_SLM, or HP_UNEQ (if VC-4 paths are unloaded) alarms.
  • In the transmit direction, the HPT sub-module generates the POH. That is, the HPT sub-module writes bytes such as J1 and C2, and calculates and writes the B3 byte.

Logic and Control Module

• Manages and configures the other modules of the board.
• Performs inter-board communication through the internal Ethernet interface.
• Traces the clock signal from the active and standby cross-connect units.
• Controls the laser.
• Passes the orderwire and ECC bytes through an ADM that consists of two paired slots when the GSCC is not in position.
• Selects the clock signal and frame header signal from the active and standby cross-connect units.
• Controls the indicators on the board.

Power Module

It converts the -48 V/-60 V power supply into the DC voltages that the modules of the board require.

Front Panel

The front panel of the SLQ16 has indicators, interfaces, a bar code, and a laser safety class label.

Diagram of the Front Panel

Figure 1 shows the appearance of the front panel of the N1SLQ16/N4SLQ16.

Figure 1 Front panel of the N1SLQ16/N4SLQ16

Figure 2 shows the appearance of the front panel of the N2SLQ16.

Figure 2 Front panel of the N2SLQ16

Indicators

The front panel of the board has the following 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 status of the indicators, see Indicators.

Interfaces

The front panel of the SLQ16 has four optical interfaces. Table 1 describes the types and usage of the optical interfaces of the SLQ16.

Table 1 Optical interfaces of the SLQ16

Interface	Type of Interface	Usage
IN1-IN4	LC	Receives optical signals.
OUT1-OUT4	LC	Transmits optical signals.

Valid Slots

The SLQ16 must be installed in a valid slot in the subrack. Otherwise, the SLQ16 fails to work normally.

The slots valid for the SLQ16 are as follows:

• The SLQ16 can be installed in slots 1-4, 15, and 16. In this case, two optical interfaces can be configured.
• The SLQ16 can be installed in slots 5-8 and 11-14. In this case, four optical interfaces can be configured.

Feature Code

The number code that follows the board name in the bar code is the feature code of the board. The feature code of the SLQ16 indicates the type of optical interface.

Table 1 describes the relationship between the feature code of the SLQ16 and the type of optical interface.

Table 1 Relationship between the feature code of the SLQ16 and the type of optical interface

Board	Feature Code	Type of Optical Interface
SSN1SLQ1601, SSN2SLQ1601, SSN4SLQ1601	01	I-16
SSN1SLQ1602, SSN2SLQ1602, SSN4SLQ1602	02	S-16.1
SSN1SLQ1603, SSN2SLQ1603, SSN4SLQ1603	03	L-16.1
SSN1SLQ1604, SSN2SLQ1604, SSN4SLQ1604	04	L-16.2
SSN1SLQ1620	20	I-16
SSN1SLQ1621	21	S-16.1
SSN1SLQ1622	22	L-16.1
SSN1SLQ1623	23	L-16.2

Technical Specifications of the SLQ16

The technical specifications of the SLQ16 include the parameters specified for optical interfaces, laser safety class, mechanical specifications, and power consumption.

Parameters Specified for Interfaces

Table 1 lists the parameters specified for the optical interfaces of the SLQ16.

Table 1 Specifications of the ports of the SLQ16

Port type	Description
I-16	2 km STM-16 two-fiber bidirectional optical interfaces
S-16.1	15 km STM-16 two-fiber bidirectional optical interfaces
L-16.1	40 km STM-16 two-fiber bidirectional optical interfaces
L-16.2	80 km STM-16 two-fiber bidirectional optical interfaces

Table 2 lists the parameters specified for the single-fiber bidirectional and colored optical interfaces of the N4SLQ16.

Table 2 Parameters specified for the single-fiber bidirectional and colored optical interfaces of the N4SLQ16

Port type	Description
S-16.1	15 km STM-16 single-fiber bidirectional optical interfaces
80 km CWDM	80 km CWDM STM-16 optical interfaces
120 km DWDM	120 km DWDM STM-16 optical interfaces

Laser Safety Class

The safety class of the laser on the board is Class 1. The maximum launched optical power of the optical interfaces is less than 10 dBm (10 mW).

Mechanical Specifications

The mechanical specifications of the SLQ16 are as follows:

• Dimensions (mm): 25.4 (W) x 235.2 (D) x 261.4 (H)
• Weight of the N1SLQ16 (kg): 0.9
• Weight of the N2SLQ16 (kg): 1.3
• Weight of the N4SLQ16 (kg): 0.7

Power Consumption

The maximum power consumption of the N1SLQ16 at room temperature (25°C) is 20 W.

The maximum power consumption of the N2SLQ16 at room temperature (25°C) is 35 W.

The maximum power consumption of the N4SLQ16 at room temperature (25°C) is 12 W.

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