OptiX OSN 3500 SSN1SLD4 2xSTM-4 optical interface board-- OSN3500

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Product Description


Functions and Features

The SLD4 transmits and receives 2xSTM-4 optical signals, performs O/E conversion for the STM-4 optical signals, extracts and inserts overhead bytes, and generates alarm signals on the line.

Table 1 provides the functions and features of the SLD4.

Table 1 Functions and features of the SLD4

Function and FeatureSLD4
Basic functionsReceives and transmits 2xSTM-4 optical signals, and processes 2xSTM-4 standard or concatenation services.
Specifications of the optical interface

  • Supports different types of standard optical interfaces, namely, the I-4, S-4.1, L-4.1, L-4.2, and Ve-4.2.

  • The characteristics of the optical interfaces of the I-4, S-4.1, L-4.1, and L-4.2 types comply with ITU-T G.957.

  • The characteristics of the optical interface of the Ve-4.2 type comply with the standards defined by .

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 monitoring of the SFP optical module, which facilitates the maintenance and upgrading of the optical module.

  • The N1SLD4 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, and VC-4-4c concatenation services.

  • The N2SLD4 supports the AU-3 services.

Overhead processing

  • Processes the section overheads of the STM-4 signals.

  • Supports the transparent transmission and termination of the path overheads.

  • Supports the setting and query of the J0, J1, and C2 bytes.

  • Supports one or two channels of ECC communication.

Alarms and performance eventsReports various alarms and performance events, which facilitates the management and maintenance of the equipment.
Protection schemes

Maintenance features

  • Supports inloops and outloops at optical interfaces.

  • The N1SLD4 supports inloops 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.

  • The N2SLD4 supports the TCM function.

  • Supports the press-to-collect function in fault data collection.

 Relationship between the feature code of the SLD4 and the type of optical interface

BoardFeature CodeType of Optical Interface
SSN1SLD410 and SSN2SLD41010S-4.1
SSN1SLD411 and SSN2SLD41111L-4.1
SSN1SLD412 and SSN2SLD41212L-4.2
SSN1SLD413 and SSN2SLD41313Ve-4.2
SSN1SLD414 and SSN2SLD41414I-4


Technical Specifications of the SLD4

The technical specifications of the SLD4 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 SLD4.

Table 1 Specifications of the ports of the SLD4

Port typeDescription
I-42 km STM-4 two-fiber bidirectional optical interfaces
S-4.115 km STM-4 two-fiber bidirectional optical interfaces
L-4.140 km STM-4 two-fiber bidirectional optical interfaces
L-4.280 km STM-4 two-fiber bidirectional optical interfaces
Ve-4.2100 km STM-4 two-fiber bidirectional optical interfaces

Table 2 lists the parameters specified for the single-fiber bidirectional optical interfaces of the N1SLD4.

Table 2 Parameters specified for the single-fiber bidirectional optical interfaces of the N1SLD4

Port typeDescription
S-4.110 km STM-4 single-fiber bidirectional 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 N1SLD4 and N2SLD4 are as follows:

  • Dimensions (mm): 25.4 (W) x 235.2 (D) x 261.4 (H)

  • Weight of the N1SLD4 (kg): 0.6

  • Weight of the N2SLD4 (kg): 1.0

Power Consumption

The maximum power consumption of the N1SLD4 at room temperature (25°C) is 17 W.

The maximum power consumption of the N2SLD4 at room temperature (25°C) is 15 W.









Cargo will be delivered within 1 day after payment arrived. Tracking Number will be offered once delivery done.

Delivery OptionsEstimated Delivery Time
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 Fedex3-5 business days
 By Sea10-20 business days



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