VTV? If you have telneted into the router I think you mean VTY.
There isn’t a way to output logs to the vty. What you want to do is send the logs to the buffer and view them there with the “show logging” command.
The top of the output from “show logging” will indicate if logging is enabled and what the logging level is for each logging type (e.g. console, buffer). If logging isn’t enabled go ahead and enable it and then configure buffer logging for “debugging” if it isn’t already. If you don’t know the commands to execute, enable the router and execute “logging ?” which will provide you with the options and is fairly intuitive.
Once the correct logging options have been configured “show logging” will output the logs you want.