In a home dialup connection, why is there an improvement in connection speed if you unplug your telephone b?

Answer 1

I suppose your "b" means telephone box.

Possibily. Depending on the kind of telephone you're using. By unplugging your phone, you reduce the amount of noise introduced to the line and that will improve your dial-up speed. A much easier way will be to use a privacy filter. In that case, at any one time only your dial up or phone can be used.

Answer 2

uh, what is a telephone b?