1# telnet 2 3 4## Command Function 5 6This command is used to enable or disable the Telnet server service. 7 8 9## Syntax 10 11telnet [_on | off_] 12 13 14## Parameters 15 16**Table 1** Parameter description 17 18| Parameter| Description| Value Range| 19| -------- | -------- | -------- | 20| on | Enables the telnet server service.| N/A | 21| off | Disables the telnet server service.| N/A | 22 23 24## Usage Guidelines 25 26- Before enabling Telnet, ensure that the network driver and network protocol stack have been initialized and the NIC of the board is in the **link up** state. 27 28- Currently, multiple clients (Telnet + IP) cannot connect to the development board at the same time. 29 > **NOTICE**<br> 30 > Telnet is used for debugging and is disabled by default. Do not use it in formal products. 31 32 33## Example 34 35Run **telnet on**. 36 37 38## Output 39 40Command output: 41 42 43``` 44OHOS # telnet on 45OHOS # start telnet server successfully, waiting for connection. 46``` 47