Can't press the "^" key

[Aitor]

Hello,

when executing emacs 20.7.1 in a remote computer (SunOs 5.9) i can't
use the "^" key; whenever i press it, i receive a beep. It happens
only with emacs, since in the remote terminal  window, the "^"
character works fine. I have a linux box installed in my computer.

Does anybody know about this problem ?

regards

                                     aitor