We are not yet ready from many perspectives. Language as we know it may be for earthlings, with other intelligent life forms from outer space possessing high levels of awareness to necessitate a different kind of communication strategy like telepathy. When we send signals of whatever form we are basing our hopes on the fact that technology evolves and extraterrestrial beings may understand the protocols we use in our modern communication systems.
This universe and other universes out there are filled with "noise" of variable wavelengths and different kinds of light (white light, red light, etc.). I may receive signals and not know what they are. This might be the case with other intelligent life forms existing in other areas of the many universes.