Huawei Metro 1000 2-port STM-4 622M optical interface board SS48OI4 equipped with 2 L-4.1 40km SFP module

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2xSTM-4 Optical Interface Board(L-4.1,SC)

Apply to Huawei Metro 1000 to transmit/receive 2xSTM-4 optical signals, at Max distance 40km.

The boards that have optical interfaces of the same type can be substituted with each other.

Provides the automatic laser shutdown (ALS) function.

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

Supports the processing of the VC-12, VC-3, and VC-4 services.

Processes higher order path overheads.

Supports the setting of K-byte reporting, K-byte transmitting, and Kbyte passing-through.

Support the transparent data communication channel (DCC) and orderwire byte channel.

Supports the setting and querying of the J0/J1/C2 byte.

Supports the multiplex section protection (MSP) in slots IU1, IU2, andIU5.

Supports the sub-network connection protection (SNCP).

Supports inloop and outloop at optical interfaces.

Supports inloop and outloop on VC-4 paths so that faults can be located quickly.

Supports the setting of the overhead byte to be sent/received.

Supports setting of enabled state of synchronization status message (SSM) on line optical interface.

Supports the pass-through test of the line K bytes.

Supports the setting of the bit error threshold-crossing values and degrade thresholds.

Provides the ALS function.


SS49OI4D(L-4.1,SC) is a 2-port STM-4 optical interface board, can be used on Huawei Metro1000. SS49OI4D(L-4.1,SC) part number is 03052703, model name is SS49OI4D03. SS49OI4D(L-4.1,SC) comes with 2 unit 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 SS49OI4D(L-4.1,SC) has indicators, interfaces, a bar code, and a laser safety class label.
Valid Slot
The pluggable SS49OI4D(L-4.1,SC) can be installed in slot IU1, IU2, or IU3 in the Metro 1000 subrack.
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 SS49OI4D(L-4.1,SC) indicates the type of optical interface.
Board Feature Code Type of Optical Interface
SS49OI4D03 03 L-4.1
Optical Interface Parameter
Nominal bit rate 622.08 Mbit/s
Line code pattern NRZ
Application code L-4.1
Maximum transmission distance(km) 40
Type of fiber Single-mode LC
Operating wavelength(nm) 1310
Launched optical power range (dBm) -3 to +2
Receiver sensitivity (dBm) -28
Mechanical Specifications
Dimensions (mm) 89.0 (W) x 218.5 (D) x 24.0 (H)
Weight (kg) 0.25


Additional information
Weight 2.0 kg
Dimensions 18.7 × 34.0 × 7.5 cm



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

A: The OI4D is available in two functional versions, namely, SS48 and SS49. The differences are as below:

  • SS48OI4D uses SFP/SC optical interface and supports optical interfaces of Ie-4.1, S-4.1, L-4.1, and L-4.2 types.
  • SS49OI4D uses SFP optical interface and supports optical interfaces of S-4.1, L-4.1, and L-4.2 types.


Q: What’s the board substitution relation among different versions?

A: The boards that have the optical interfaces of the same type can be substituted with each other.


Q: What is the difference between different function codes?


Board Feature Code Optical Interface Transmission Distance(km)
SS49OI4D02 02 S-4.1 15
SS49OI4D03 03 L-4.1 40
SS49OI4D04 04 L-4.2 80


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 SS49OI4D(L-4.1,SC) 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 SS49OI4D(L-4.1,SC) board?

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

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