Huawei OSN1500 2500 3500 7500 4-port STM-4 622M optical interface board SSN2SLQ411 equipped with 4 L-4.1 40km SFP module

(2 reviews) | 10 QA

0 in stock      Ready to ship

12 People watching this product now!
PN: 03050659 Category:
Firmware Upgrades

Firmware Upgrades x

Firmware upgrades allow our customers to utilize the latest features and security enhancements that simply make the devices to operate proficiently Learn more

Hardware Compatibility

Hardware Compatibility x

Backed up by our experienced pre-sales support team, and volume documentation, to avoid purchasing incompatible hardware.

Hardware Tested

Hardware Tested x

In order to avoid hardware malfunction, each equipment will be strictly tested before delivery and the test report will be packed inside equipment and delivered together. Learn more

Software Compatibility

Software Compatibility x

Software compatibility test between active/standby system board, main control board and service board, mother/sub-card; system commissioning test to prevent all software conflicts.

Huawei OSN 3500 System Test Procedure
In this document, we will show you how tests SDH equipment product boards.
Learn More


4xSTM-4 Optical Interface Board(L-4.1,LC)

Apply to Huawei OSN 1500B, OSN 2500, OSN 3500, OSN 7500 to transmit and receive 4xSTM-4 optical signals, at 15~40km.

Supports TCM function and AU-3 service.

Supports the detection and query of the information about the optical module.

Supports ALS function. The optical interface supports setting of the on/off state of a laser.

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

Supports the VC-12, VC-3, VC-4 services, and VC-4-4c concatenation services.

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.

Supports two-fiber ring MSP, four-fiber ring MSP, linear MSP, SNCP, SNCTP, and SNCMP protection schemes.

Supports the fiber-shared MSP and SNCP and processes eight sets of K bytes.

Supports inloops and outloops at optical interfaces.

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.


SSN2SLQ4(L-4.1,LC) is a 4-ports STM-4 optical interface board, can be used on Huawei OSN1500B, OSN2500, OSN3500, OSN7500. SSN2SLQ4(L-4.1,LC) part number is 03050659, model name is SSN2SLQ411. SSN2SLQ4(L-4.1,LC) comes with 4 units L-4.1 SFP module, transmission distance is 40km. SFP module is swappable to perform different transmission distance.

Tech Specs
Front Panel
The front panel of the SSN2SLQ4(L-4.1,LC) has indicators, interfaces, a bar code, and a laser safety class label.


Valid Slot
OSN 1500B: The SSN2SLQ4(L-4.1,LC) can be installed in slots 11–13.

OSN 2500: When cross-connect boards are CXLN, CXLLN the SSN2SLQ4(L-4.1,LC) can be installed in slots 5–8, 11–13.

OSN 3500: When cross-connect boards are IXCS, SXCA, SSN2SLQ4(L-4.1,LC) can be installed in slots 1–8 and 11–16.

OSN 7500: SSN2SLQ4(L-4.1,LC) can be installed in slots 1–8, 11–18, and 26–31.

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 SSN2SLQ4(L-4.1,LC) indicates the type of optical interface.
Board Feature Code Type of Optical Interface
SSN2SLQ411 11 L-4.1
Optical Interface Parameter
Parameter Value
Nominal bit rate 622080 kbit/s
Line code pattern NRZ
Application code L-4.1
Transmission distance (km) 15 to 40
Type of fiber Single-mode LC
Operating wavelength range (nm) 1280 to 1335
Launched optical power range (dBm) -3 to +2
Receiver sensitivity (dBm) -28
Minimum overload (dBm) -8
Minimum extinction ratio (dB) 10
Maximum -20 dB spectral width (nm) 1
Minimum side mode suppression ratio (dB) 30
Mechanical Specifications
Dimensions (mm) 25.4 (W) x 235.2 (D) x 261.4 (H)
Weight (kg) 1


Additional information
Weight 3.0 kg
Dimensions 37.5 × 34.0 × 7.5 cm



, , ,




Q: What’s the difference between different functional versions?

A: SLQ4 is available in two functional versions, namely, N1 and N2. N1SLQ4 is no longer manufactured. The differences are as below:

N1 N2
single-fiber bidirectional optical modules Supported Not supported
AU-3 service processing Not supported Supported
loopbacks on VC-4 paths Supported Supported
TCM function Not supported Supported


Q: What is the board substitution relation among different versions?

A: N3SLQ41 can substitute for the N1SLQ4 and N2SLQ4 at the same line rate.


Q: What is the difference between different function codes?


Board Feature Code Optical Interface Transmission Distance(km)
SSN2SLQ410 10 S-4.1 15
SSN2SLQ411 11 L-4.1 40
SSN2SLQ412 12 L-4.2 80
SSN2SLQ413 13 Ve-4.2 100
SSN2SLQ414 14 I-4 2


Q: Can I change SFP module to reach longer transmission distance?

A: Yes, you can, please contact sales team, for available SFP module and cost.


Q: Can I equip different specification SFP module on different port, to perform different transmission distance for each port?

A: Yes, you can, but that not recommended.


Q: Can I use compatible SFP module on SSN2SLQ4(L-4.1,LC) board?

A: Yes, you can, the board might generate alarm, but it won’t affect use.


Q: Can I return/exchange board if not compatible with my system?

A: Yes, please tell our sales team your system and main control board version, before your purchase.


Q: The board is new or refurbished?

A: Yes, it is original new, not been used.


Q: Do you sell SFP module separately?

A: Yes, we do.


Q: What is the lead time for SSN2SLQ4(L-4.1,LC) board?

A: In normal condition is 5 days, better to confirm with our sales team before your purchase.

Reviews (2)

2 reviews for SSN2SLQ4(L-4.1,LC)

  1. Shadrach

    Good service, I had problem with installation, and I talked with their technical team, they solve the problem just in minutes.

  2. Gonzalez

    Very good support to tell me difference between SLQ4 and SLQ41 and recommend cost efficient one.

Add a review

Your email address will not be published. Required fields are marked *

You have to be logged in to be able to add photos to your review.


10 Years Experience

As a global leading professional Huawei network hardware and solution provider, we have delivered Huawei, ZTE, Nokia, CISCO, Fiberhome, etc, equipment to 500+ customer groups in 90+ countries over the past 10 years. Know more

Premium Quality Guaranteed

Strict 3-Level Quality Control procedure: 1st-Level inspection; 2nd-Level In-stock test; 3rd-Level 24 hour pre-delivery test to guarantee premium quality. Know more

Value over price

What we offer to our customers is value rather than price. We make customers enjoy the benefit of our reliable delivery products and generate more value to the greatest extent. Know more

Tailored Technical Support

We provide customers personalized and professional tech support by remote diagnosis, fault-location and troubleshooting. "We are here to help you instantly when you need it."

Flexible Payment

We continuously offer flexible payment methods such as Wire Transfer, Paypal, L/C, Western Union and Alipay, to help customer enjoy a more convenient shopping experience. Know more

Official Document Resource

We provide official and extensive document resources to guide our customers to targetly solve the problem they may meet. Know more

1 Year Warranty Guaranteed

Our products come with 1 year warranty. Customers can ask for a repair, replacement or refund for a major product failure. Know more

Fast Global Shipping

We won't stop to develop rapid and cost effective shipping options, provide the excellent experience for our global customers. Know more

One Stop Solution

We provide not only network products but also network proposal, mainstream and cost efficient solution to assist customers eliminate the concerns.