"DSR is on; Don't send DTR on" error

Question

When I connect my laptop to my Android phone, the computer aways shows me this error :

1827    Data Router             usb connection is true
1827    Data Router             DSR is on Don't send DTR on

My phone is galaxy II with Android 4.03.

According to my search:

DSR=Data Set Ready    DCE (Data Carrier Detect) is ready to receive commands or data.
DTR=Data Terminal Ready  Indicates presence of DTE to DCE.

Answer 1

This is not an application error, this is spam in your log from the system. It's okay to ignore unless you're working on the phone's hardware.