The OSN9800 N402 boards are available in the following functional versions: TNU1, TNU2, TNU3, TNU5, TNV1, TNV2, TNV3. The boards belong to the OTN line class of boards and realize the interconversion of the following signals: 160 x ODU0/80 x ODU1/20 x ODU2/20 x ODU2e/4 x ODU3/2 x ODU4/. 160 x ODUflex<->2 x OTU4. 160 x ODUflex<->2 x OTU4. OTU4 is a DWDM standard wavelength compliant with ITU-T G.694.1 recommendation. The same optical port supports mixed transmission of ODU0, ODU1, ODU2/ODU2e, ODU3, ODUflex.N402 adopts coherent reception technology and is applied in coherent systems. The single board supports functions and features such as electrical layer crossover, OTN interface, and ESC. The single board consists of WDM side optical module, signal processing module, control and communication module, and power module.
Attention:
Single boards using different optical line code types cannot be docked, for example, QPSK, QPSK wDCM, QPSK wDCM-Enhanced are different code types, T51 uses QPSK, T61 uses QPSK wDCM, and they cannot be docked;
T6x supports AFEC level configurable, docking is supported only when the AFEC level is configured to be the same at both ends.The transmission distance of T6x is compared as follows: T61>T62>T65, and the actual transmission distance is based on the shorter one after docking of different veneers;
Single boards with different error correction codes cannot be docked. HFEC, SDFEC, SDFEC2, etc. are different error correction codes.
Functions and Features
The OSN9800 N402 single board supports functions and features such as layer crossing, OTN interface, ESC, etc. The N402 single board supports line mode and trunk mode. The functions and features of line mode and trunk mode are shown in Table 1 and Table 2, respectively.
| Functions and Features | Description | |||||
|---|---|---|---|---|---|---|
| Basic Functions |
Realizes interconversion of the following signals: 160 x ODU0/80 x ODU1/20 x ODU2/20 x ODU2e/4 x ODU3/2 x ODU4/160 x ODUflex<->2 x OTU4 Mixed transmission of ODU0, ODU1, ODU2, ODU2e, ODU3, ODUflex is supported on the same optical port. |
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| Crossover Capability |
Support to realize service scheduling with cross board. 160 x ODU0/80 x ODU1/20 x ODU2/20 x ODU2e/4 x ODU3/2 x ODU4/160 x ODUflex |
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| OTN Functions |
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| WDM Specifications |
Supports ITU-T G.694.1 specifications for DWDM. |
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| Wavelength Tunable Function |
Supports wavelength tunable optical modules. If the wavelength tunable optical module is configured, it can realize that the WDM side optical signal can be tunable in the 80-wave range in the C-band 50 GHz interval. TNU5N402 can realize that the wavelength-division side optical signal is adjustable within the 96-wave range of the extended C-band 50 GHz interval. |
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| ESC Function | Support | |||||
| PRBS Function |
The WDM side supports the PRBS function. |
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| LPT function | Not supported | |||||
| Error correction coding |
Description:
Veneers with different error correction codes cannot be docked. |
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| Performance Surveillance and Alarm Monitoring |
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| Relay board |
The WDM side signal of N402 board can be relayed by other N401, N402, LTX, NS4 boards of the same FEC type. For example:
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| ALS Function | Not supported | |||||
| Test frame function | Not supported | |||||
| IEEE 1588v2 | Not Supported | |||||
| Physical Layer Clock |
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| Electrical Layer ASON | Supported | |||||
| Optical Layer ASON | Support Description: When black and white optical modules are used, optical layer ASON is not supported. |
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| Protection Mode. |
Description:
Branch SNCP protection is not supported when the scheduling granule is ODUflex. |
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| Loopback | Wavelength division side loopback | ODU3 channel loopback | ODU2 Channel Loopback | ODU1 channel loopback | ODU0 Channel Loopback | ODUflex channel loopback |
| Supported | Supported | Supported | Supported | Supported | Support | |
Note: TNV1N402C01 does not support trunk mode.TNU5N402 does not support trunk mode when OTU4-4×28G-10km module is used.
| Functions and Features | Description | ||
|---|---|---|---|
| Basic Functions | Used as an electrical relay station in the system to realize the electrical relay function of the corresponding optical signal. | ||
| Relay rate |
OTU4: OTN service with a rate of 111.81Gbit/s |
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| OTN Function |
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| WDM Specifications |
Supports DWDM specifications of ITU-T G.694.1. |
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| Wavelength Tunable Function |
Supports wavelength tunable optical modules. If the wavelength tunable optical module is configured, it can realize that the WDM side optical signal can be tunable in the 80-wave range in the 50 GHz interval of C-band. TNU5N402 can realize that the wavelength-division side optical signal is adjustable within the 96-wave range of the extended C-band 50 GHz interval. |
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| ESC Function | Support | ||
| PRBS Function | Not supported | ||
| Error Correction Coding |
Description:
Veneers with different error correction codes cannot be docked. |
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| Performance Surveillance and Alarm Monitoring |
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| ALS Function | Not supported | ||
| Test frame function | Not supported | ||
| IEEE 1588v2 | Not Supported | ||
| Physical Layer Clocking | Not supported | ||
| Electrical Layer ASON | Not Supported | ||
| Optical Layer ASON | Supported Description: When black and white light optical modules are used, optical layer ASON is not supported. |
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| Protection Mode | Does not support the | ||
| Loopback | Not supported | ||
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