Telephony has revolutionized the way people talk, shaping human interactions, business operations, and technological advancements. From its early beginnings with Alexander Graham Bell’s invention of the phone in 1876 to the subtle mobile networks and digital communications of as we speak, telephony has evolved into a crucial component of world https://drive.google.com/drive/folders/1z6u8cxVg-4Faks70a7La5x6WY55ZNxkx