Which technology is primarily used to send voice communication over packet networks?

Voice over Internet Protocol (VoIP) is the technology that enables the transmission of voice communication over packet networks. It converts voice signals into digital packets and transmits them over the Internet or other IP networks, allowing for efficient and scalable communication. This method leverages the advantages of digital transmission, such as reduced costs, improved functionality, and the ability to integrate with other multimedia services.

VoIP works by using various protocols to facilitate the setup, management, and termination of voice calls, making it a robust choice for not only personal use but also for businesses looking for cost-effective communication solutions. Its ability to use the existing Internet infrastructure for voice communication stands out as a major advancement over traditional telephony systems, which rely on circuit-switched networks.

The other options, while they reference methods of voice communication, either do not exist as commonly accepted technologies being widely used today or are less accurate representations of the primary technology employed in this context. As such, VoIP is recognized universally for its ability to handle voice traffic over data networks effectively.