1. The DPU must work normally.
2. The subrack number and slot number to be entered must be the numbers of the subrack and slot where the DPU is located.
3. During the loopback test on a DSP channel, services on this channel are disrupted. Use this command with caution.
| ID | Name | Description |
|---|---|---|
| SRN | Subrack No. | Meaning: subrack number Value range: 0-11 Explanation: This parameter specifies the number of the subrack where the GDPUC or GDPUX is located. Default value: None |
| SN | Slot No. | Meaning: slot number Value range: 0-27 Explanation: This parameter specifies the number of the slot that holds the GDPUC or GDPUX. Default value: None |
| DSPN | DSP No. | Meaning: number of the DSP Value range: 0-21 Explanation: This parameter specifies the number of the DSP. Default value: None |
| STRCHN | Start channel | Meaning: number of the start channel Value range: 0-69 Explanation: This parameter specifies the number of the start channel. Default value: None |
| ENDCHN | End channel | Meaning: number of the end channel Value range: 0-69 Explanation: The number of the end channel cannot be smaller than the number of the start channel. Default value: None |
| LOPMOD | Loop mode | Meaning: loopback mode Value range: AITF, ABISITF Explanation: The value AITF indicates that the loopback is performed on the A interface; the value ABISITF indicates that the loopback is performed on the Abis interface. Default value: None |