Voice calls are a method of communication that allows people to talk to each other in real-time using telephones or mobile devices. This technology converts sound waves from a person's voice into electrical signals, which are then transmitted over a network to the recipient's device. Voice calls can be made through traditional landlines or through mobile networks, including cellular and Voice over Internet Protocol (VoIP) services. During a voice call, both parties can hear each other and respond instantly, making it a direct and personal way to communicate. Voice calls are commonly used for personal conversations, business meetings, and customer service interactions. They can also be enhanced with features like call waiting, voicemail, and conference calling, allowing multiple participants to join the conversation.