 
            TNFASLNO Is Huawei OptiX OSN 1800 SDH Optical Interface Board
 
            Huawei OptiX OSN 1800 SDH Optical Interface Board TNFASLNO Overview
TNFASLNO: 4*STM-16/8*STM-4/8*STM-1 Optical interface board
The TNFASLNO optical interface board is a SDH board, which can be used on the OSN equipment to receive and transmit eight STM-4/STM-1 optical signals, or four STM-16 optical signals, or two STM-16 and four STM-4/STM-1 optical signals.
The TNFASLNO consists of an O/E conversion unit, an overhead processing unit, a logic control unit, and a clock unit.
The TNFASLNO Receives/Transmits 4 x STM-16 optical signals.
Functions and Features of the TNFASLNO Board
| Function and Feature | Description | 
| Basic function | 
 | 
| Service processing | VC-12, VC-3, VC-4, VC-4-4c, VC-4-16c | 
| Overhead processing | 
 | 
| Port specifications | 
 | 
| SDH SNCP | Supported | 
| Linear MSP | Supported | 
| Ring MSP | 
 | 
| SDH ASON | Supported NOTE: Only supported when the TNZ6UXCMS/TNZ5UXCMS/TNZ5XCS board is used. | 
| Pointer processing | Processes AU pointers. | 
| ALS | Supported (comply with ITU-T G.664). | 
| Line clock source | Supports eight channels of SDH line clock signals. | 
| Physical clock | Supports SDH clock synchronization. | 
| Outband DCN | Supported NOTE: For details about the DCN types supported by the board, see "Feature Description - Outband DCN - Introduction to DCN - DCN Communication Channel - Comparison Between OSC and ESC". | 
| Bit Error Threshold-Crossing/Degradation Threshold Setting | Supported | 
| Reset | Supports warm reset and cold reset, the warm reset does not affect services. | 
| Manufacturer information querying | Supported | 
| In-service FPGA loading | Supported | 
| Hot swapping | Supported | 
| Channel loopback | 
 | 
| Port loopback | Inloops, outloops | 
| 2M ASON | Supported NOTE: Only supported when the TNZ6UXCMS/TNZ5UXCMS/TNZ5XCS board is used. | 


