Channel 2 is an alias for the voice channel, so this is normal. Your best bet is to define your own (named) channels, rather than using the numeric aliases, which mostly exist for compatibility.
Another Old-Fashioned Bishoujo Gamer
Supporting creators since 2004; Code > Drama
(When was the last time you backed up your game?)
"It is not the critic who counts; not the man who points out how the strong man stumbles, or where the doer of deeds could have done them better. The credit belongs to the man who is actually in the arena, whose face in marred by dust and sweat and blood; who strives valiantly; who errs, who comes short again and again, because there is no effort without error and shortcoming" - Theodore Roosevelt