Telephony has revolutionized the way people communicate, shaping human interactions, enterprise operations, and technological advancements. From its early beginnings with Alexander Graham Bell’s invention of the telephone in 1876 to the delicate cellular networks and digital communications of at this time, telephony has advanced into a essential part of worldwide https://docs.google.com/file/d/1e5LdeuodRPjMw2uHlI-vZwsgt-TC8Hl_