Call formats refer to the structured ways in which telephone calls are conducted, often categorized by their purpose and method. Common types include voice calls, video calls, and conference calls. Each format serves different communication needs, such as one-on-one conversations or group discussions. In addition to these basic types, call formats can also vary based on technology used, such as landline, mobile, or VoIP (Voice over Internet Protocol). Understanding these formats helps users choose the most effective method for their communication, ensuring clarity and efficiency in their interactions.