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 phone in 1876 to the subtle cell networks and digital communications of today, telephony has advanced into a important part of world connectivity. In https://docs.google.com/presentation/d/1tTf-gH7g9cCmgvLRO5weQAOh2xFzm8etJBmkGITGNEw/edit