We were just talking about this a couple days ago at work! If you listened very carefully to the handshake, you could tell what the quality connection you had.

We were just talking about this a couple days ago at work! If you listened very carefully to the handshake, you could tell what the quality connection you had. After awhile, you could even guess the final baud from the sound of the handshake, and if it was bad, you'd try reconnecting a few times to see if you could get a better connection.