The oldest known symbols created for the purpose of communication were cave paintings, a form of rock art, dating to the Upper Paleolithic age.The oldest known cave painting is located within Chauvet Cave, dated to around 30,000 BC.It took about 20,000 years for homo sapiens to move from the first cave paintings to the first petroglyphs, which are dated to around 10,000BC.It is possible that humans of that time used some other forms of communication, often for mnemonic purposes - specially arranged stones, symbols carved in wood or earth, quipu-like ropes, tattoos, but little other than the most durable carved stones has survived to modern times and we can only speculate about their existence based on our observation of still existing 'hunter-gatherer' cultures such as those of Africa or Oceania.
Many businesses benefited from the additional communication options that became available after the invention of the telephone.
His competitor Elisha Gray registered a similar patent just a few hours after he did.
The telephone came about because they were trying to improve the capabilities of the telegraph.
This system allowed other individual lines to be connected with each other through a central station. An individual would need to manually connect the wires to each other through the switchboard. Many phones would go to a doctor’s office, police station or to a bank.
Individuals could subscribe to the switchboard for a monthly fee that gave them access to the telephone network.