TN12ST2 2 150km eOTDR OSC Modules

Huawei OSN6800 OSN8800 Bi-direction Optical Supervisory Channel Board with 2PCS 150km eOTDR OSC Modules

(4 reviews) | 10 sold | 10 QA

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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 WDM-OTN Equipment Test Procedure
In this topic, we take Huawei OSN 8800 as example to show you how to test the WDM/OTN equipment (Huawei OSN 6800 etc)
Learn More


Bi-direction optical supervisory channel board applied to Huawei OSN6800 and OSN8800.

Supports pluggable optical modules that use 1511 nm and 1491 nm wavelengths.

Equipped with 2PCS 150km 1511nm/1491nm eOTDR OSC modules.

OTDR Pulse-Width 100, 200, 400, 800, 4000, 10000, 20000nm.

Processes two channels of supervisory signals in opposite directions, transmits/extracts overhead information.

Processes and sends the overhead information to the SCC.

Supports transparent transmission of two channels of FE electrical signals.

Supports IEEE 1588v2 protocol for time synchronization.

Supports physical clock function.

Supports a maximum of 40.5 dB transmission.

Supports line fiber quality monitoring.

Provides the 3R function.

Works with FIU, the supervisory channel signal wavelength is 1511 nm.

Works with SFIU, signal wavelengths of supervisory channel for RM1/TM1 is 1511 nm, signal wavelengths of supervisory channel for RM2/TM2 is 1491 nm.


TN12ST2 is a bi-directional optical supervisory channel board applied to Huawei OSN6800 and OSN8800, to process two channels of supervisory signals in opposite directions, transmits and extracts the overhead information about the system, and sends overhead information to the SCC.

TN12ST2 is equipped with 2pcs 150km eOTDR OSC modules, you can choose modules specification at the available option or please contact sales team before purchase.

Tech Specs
Front Panel
There are indicators and interfaces on the front panel of the TN12ST2 board.

Valid Slot
OSN 8800 T64 subrack: TN12ST2 can be installed in slots IU1-IU8, IU11-IU42, IU45-IU68.

OSN 8800 T32 subrack: TN12ST2 can be installed in slots IU1-IU8, IU12-IU27, IU29-IU36.

OSN 8800 T16 subrack: TN12ST2 can be installed in slots IU1-IU8, IU11-IU18.

OSN 8800 universal platform subrack: TN12ST2 can be installed in slots IU3-IU16.

OSN 6800 subrack: TN12ST2 can be installed in slots IU1-IU8, IU11-IU16.

OSN 3800 chassis: TN12ST2 can be installed in slots IU2-IU5.

Optical Interface Parameter
Item Vaule
150 km eOTDR OSC Module
Signal rate(Mbit/s) 155.52
Operating wavelength range(nm) 1504.5 to 1517.5
1484.5 to 1497.5
Target distance(km) 80
Launched optical power(dBm) 0.5 to 5
Receiver sensitivity(dBm) ≤ -42
Receiver overload(dBm) -10
OTDR Pulse-Width(ns) 100, 200, 400, 800, 4000, 10000, 20000
Mechanical Specifications
Dimensions(mm) 25.4(W) x 220(D) x 264.6(H)
Weight(kg) 1.1
Additional information
Weight 3.0 kg
Dimensions 37.5 × 34.0 × 7.5 cm

, ,


Q: How many hardware version does ST2 have?

A: ST2 is available in three functional versions, namely, TN11, TN12 and TN13. The mapping between the board and equipment as below:

Board General 8800 T64 Subrack Enhanced 8800 T64 Subrack General 8800 T32 Subrack Enhanced 8800 T32 Subrack 8800 T16 Subrack 8800 Universal Platform Subrack 6800 Subrack 3800 Chassis







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


Original Board Substitute Board Substitution Rules
TN11ST2 TN13ST2 The TN13ST2 can be created as 11ST2 on the NMS. The former can substitute for the latter, without any software upgrade. After substitution, the TN13ST2 functions as the TN11ST2.
TN12ST2 None
TN13ST2 None

Q: What are the differences between the three versions?


  • FunctionThe TN12ST2 board supports line fiber quality monitoring, but the TN11ST2 or TN13ST2 board does not.
  • AppearanceThe panel appearance of the TN12ST2 board is different from that of the TN11ST2 or TN13ST2 board. The TN12ST2 board provides the TMI1/TMO1 and TMI2/TMO2 ports, but the TN11ST2 or TN13ST2 board does not.

Q: What’s the relationship between OAU, DAS1 and ST2?

A: OAU is only for amplifying the input optical signals in C band and ST2 only supports optical supervisory, while DAS1 both supports amplifier and optical supervisory.

Q: How to choose the working wavelength of TN12ST2 Boards?

A: When the TN12ST2 board works with the SFIU board, it is recommended that the working wavelength of the TM1 be 1511nm and the working wavelength of the TM2 be 1491nm.

When the TN12ST2 board works with the FIU board, the supervisory channel signal wavelength is 1511 nm.

Q: Does the TN12ST2 board can interwork with TN11ST2 or TN13ST2 board for OSC interconnection?

A: The TN12ST2 board can only interwork with a 12ST2 board for OSC interconnection, and the TN11ST2 board can interwork with a TN13ST2 board for OSC interconnection.

Q: Does TN12ST2 board support line fiber quality monitoring?

A: Yes, only the TN12ST2 board supports line fiber quality monitoring, the line fiber quality monitoring function can be used on the NMS, and the NMS will display monitoring figures and data, but the Fiber Doctor Management System Software Fee License needs to be purchased for this function.

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 purchase.

Q: The board is new or refurbished?

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

Q: What is the lead time for TN12ST2 board?

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

Reviews (4)

4 reviews for TN12ST2 2 150km eOTDR OSC Modules

  1. Ben

    I bought it for the second time, but the delivery was a little slow due to the epidemic.

  2. Roshan Joshi

    I bought 10pcs earlier, and my client said it was good quality, then I placed an order for 6PCS, and the delivery time was also very fast.

  3. maqsood

    I bought more than 10units at that service is good and the delivery is fast

  4. Jairon

    We have total 8pcs TN12ST2 needs, but we need take one to check firstly, for now test, all OK; and my sales account applied for sending me OTDR 1511nm module without extra cost, really great.

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