established lines of signal towers,At each one,people with powerful voices shouted a message to the next tower,and in this way,news and information was passed on through the kingdom.
A kind of drum talk is still used in Central Africa today,although few who are not natives have been able to understand it.
The sender uses a drum that can produce a high or low tone.
Becuse the local dialect alternates in these tones,the sender is able to simulate speech with the drums.