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Huawei SDH equipment OSN3500 loopback is a commonly used class of operations in the daily maintenance of transmission equipment, due to the use of overhead chips on the single board different support for loopback varies, and is now on the various types of line single board support for loopback is summarized for the convenience of engineers to query. Please refer to the attached table for details.
Huawei SDH Equipment STM-64 Single Boards
| Board Name | Use Overhead Chip | Port Inner Loopback | Port External Loopback | VC-4 Inner Loopback | VC-4 External Loopback | VC-3/VC-12 External Loopback |
| SSN1SL64 | SD8501 | Support | Support | Support | Supported | Not Supported |
| SSN2SL64 | 1610g | Supported | Supported | Not Supported | Not Supported | Not Supported |
| SST2SL64 | 1610g | Supported | Supported | Not Supported | Not Supported | Not Supported |
| SST2SL64A | 1610G | Supported | Supported | Not Supported | Not Supported | Not Supported |
| SSN3SL64 | SD8501 | Supported | Supported | Supported | Supported | Not Supported |
| SSN4SL64 | SD8505 | Supported | Supported | Supported | Supported | Not Supported |
| SSN1SF64A | SD8501 | Supported | Supported | Supported | Support | Not Supported |
| SSN1SF64 | SD8501 | Supported | Supported | Supported | Supported | Not Supported |
| SSN1SLD64 | SD8501 | Supported | Supported | Supported | Supported | Not Supported |
| SSN4SLD64 | SD8505 | Supported | Supported | Supported | Supported | Not Supported |
| SSN4SF64 | SD8505 | Supported | Supported | Supported | Supported | Not Supported |
| SSN4SFD64 | SD8505 | Supported | Supported | Supported | Supported | Not Supported |
| Board Name | Use Overhead Chip | Port Inner Loopback | Port External Loopback | VC-4 Inner Loopback | VC-4 External Loopback | VC-3/VC-12 External Loopback |
| SSN1SL61A | SD543 | Support | Support | Support | Not Supported | Not Supported |
| SSN1SL16 | SD543 | Supported | Supported | Supported | Not Supported | Not Supported |
| SSN2SL16A | 162G5 | Supported | Supported | Not Supported | Not Supported | Not Supported |
| SSN2SL16 | 162G5 | Supported | Supported | Not Supported | Not Supported | Not Supported |
| SSN3SL16A | SD595 | Supported | Supported | Supported | Support | Not Supported |
| SSN3SL16 | SD595 | Supported | Supported | Supported | Supported | Not Supported |
| SSN3SL16A-B2 | SD595 | Supported | Supported | Support | Support | Not Supported |
| SSN4SL16A | SD595 | Supported | Supported | Supported | Support | Not Supported |
| SSN2SLQ16 | 1610G | Supported | Supported | Not Supported | Not Supported | Not Supported |
| SSN1SLQ16 | SD8501 | Supported | Supported | Supported | Support | Not Supported |
| SSN1SLD16 | SD8501 | Supported | Supported | Supported | Supported | Not Supported |
| SSN1SLQ16-B2 | SD8501 | Supported | Supported | Supported | Support | Not Supported |
| SSN1SLO16 | SD8501 | Supported | Supported | Supported | Supported | Not Supported |
| SSN4SLQ16 | SD8505 | Supported | Supported | Supported | Support | Not Supported |
| SSN4SLO16 | SD8505 | Supported | Supported | Supported | Supported | Not Supported |
| Board Name | Use Overhead Chip | Port Inner Loopback | Port External Loopback | VC-4 Inner Loopback | VC-4 External Loopback | VC-3/VC-12 External Loopback |
| SSN1SLQ4 | SD543 | Support | Support | Supported | Not Supported | Not Supported |
| SSN1SLD4 | SD543 | Supported | Supported | Supported | Not Supported | Not Supported |
| SSN1SL4 | SD543 | Supported | Supported | Supported | Not Supported | Not Supported |
| SSN1SLQ4A | SD595 | Supported | Supported | Supported | Support | Not Supported |
| SSN1SLD4A | SD595 | Supported | Supported | Supported | Support | Not Supported |
| SSN1SL4A | SD595 | Supported | Supported | Supported | Supported | Not Supported |
| SSN1SLQ4A-B2 | SD595 | Supported | Supported | Supported | Support | Not Supported |
| SSN1SLD4A-B2 | SD595 | Supported | Supported | Support | Support | Not Supported |
| SSN1SL4A-B2 | SD595 | Supported | Supported | Supported | Support | Not Supported |
| SSN3SLQ41 | SD595 | Supported | Supported | Supported | Support | Not Supported |
| SSN1SLQ4A-B3 | SD8502 | Supported | Supported | Supported | Support | Not Supported |
| SSN1SLD4A-B3 | SD8502 | Supported | Supported | Supported | Support | Not Supported |
| SSN1SL4A-B3 | SD8502 | Supported | Supported | Supported | Support | Not Supported |
| SSN3SLQ41-B2 | SD8502 | Supported | Supported | Supported | Support | Not Supported |
| SSN2SLQ4 | 1610G | Supported | Supported | Not Supported | Not Supported | Not Supported |
| SSN2SLD4 | 1610G | Supported | Supported | Not Supported | Not Supported | Not Supported |
| SSN2SL4 | 1610G | Supported | Supported | Not Supported | Not Supported | Not Supported |
| SSR1LD4 | SD543 | Supported | Supported | Supported | Not Supported | Not Supported |
| SSR1SL4 | SD543 | Supported | Supported | Supported | Not Supported | Not Supported |
| SSR1SLD4-B2 | SD8502 | Supported | Supported | Supported | Not Supported | Not Supported |
| SSR1SL4-B2 | SD8502 | Supported | Supported | Supported | Not Supported | Not Supported |
| SSR3SLD4 | SD595 | Supported | Supported | Supported | Supported | Not Supported |
| SSR3SL4 | SD595 | Supported | Supported | Supported | Supported | Not Supported |
| SSR3SLD4-B2 | SD8502 | Supported | Supported | Supported | Supported | Not Supported |
| SSR3SL4-B2 | SD8502 | Supported | Supported | Supported | Supported | Not Supported |
Huawei SDH Equipment STM-1Single Board
| Board Name | Use Overhead Chip | Port Inner Loopback | Port External Loopback | VC-4 Inner Loopback | VC-4 External Loopback | VC-3/VC-12 External Loopback |
| SSN1SLQ4 | SD543 | Support | Support | Supported | Not Supported | Not Supported |
| SSN1SLD4 | SD543 | Supported | Supported | Supported | Not Supported | Not Supported |
| SSN1SL4 | SD543 | Supported | Supported | Supported | Not Supported | Not Supported |
| SSN1SLQ4A | SD595 | Supported | Supported | Supported | Support | Not Supported |
| SSN1SLD4A | SD595 | Supported | Supported | Supported | Support | Not Supported |
| SSN1SL4A | SD595 | Supported | Supported | Supported | Supported | Not Supported |
| SSN1SLQ4A-B2 | SD595 | Supported | Supported | Supported | Support | Not Supported |
| SSN1SLD4A-B2 | SD595 | Supported | Supported | Support | Support | Not Supported |
| SSN1SL4A-B2 | SD595 | Supported | Supported | Supported | Support | Not Supported |
| SSN3SLQ41 | SD595 | Supported | Supported | Supported | Support | Not Supported |
| SSN1SLQ4A-B3 | SD8502 | Supported | Supported | Supported | Support | Not Supported |
| SSN1SLD4A-B3 | SD8502 | Supported | Supported | Supported | Support | Not Supported |
| SSN1SL4A-B3 | SD8502 | Supported | Supported | Supported | Support | Not Supported |
| SSN3SLQ41-B2 | SD8502 | Supported | Supported | Supported | Support | Not Supported |
| SSN2SLQ4 | 1610G | Supported | Supported | Not Supported | Not Supported | Not Supported |
| SSN2SLD4 | 1610G | Supported | Supported | Not Supported | Not Supported | Not Supported |
| SSN2SL4 | 1610G | Supported | Supported | Not Supported | Not Supported | Not Supported |
| SSR1LD4 | SD543 | Supported | Supported | Supported | Not Supported | Not Supported |
| SSR1SL4 | SD543 | Supported | Supported | Supported | Not Supported | Not Supported |
| SSR1SLD4-B2 | SD8502 | Supported | Supported | Supported | Not Supported | Not Supported |
| SSR1SL4-B2 | SD8502 | Supported | Supported | Supported | Not Supported | Not Supported |
| SSR3SLD4 | SD595 | Supported | Supported | Supported | Supported | Not Supported |
| SSR3SL4 | SD595 | Supported | Supported | Supported | Supported | Not Supported |
| SSR3SLD4-B2 | SD8502 | Supported | Supported | Supported | Supported | Not Supported |
| SSR3SL4-B2 | SD8502 | Supported | Supported | Supported | Supported | No support |
This chapter of related technical information and SDH equipment troubleshooting process by the Shenzhen Optical Transmission Network Technology Co. Our company specializes in Huawei SDH optical transmission equipment, SDH transmission equipment sales.
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