Telephony has revolutionized the way in which people communicate, 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 delicate cellular networks and digital communications of as we speak, telephony has evolved right into a essential https://drive.google.com/drive/folders/1LsG7GELSh90ZTRa2kTzn_NU1fhrEjco0