Telephony has revolutionized the way in which people talk, 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 subtle mobile networks and digital communications of as we speak, telephony has evolved into a essential element https://docs.google.com/spreadsheets/d/1teK7cKOwO3hL_NuYIG16FWw0aH-u2AvrJ8C9Y6sRxFg/edit