The process allows an individual to connect two separate telephone numbers into a single, live conversation. This functionality enables simultaneous communication among three different parties using a traditional landline. For example, a user can speak with one person, place that person on hold, dial a second person, and then merge both calls into a single conference.
This feature enhances communication efficiency when multiple parties need to be involved in a single discussion without the need for in-person meetings. Historically, it provided a convenient alternative for quick decision-making and information dissemination before the widespread adoption of mobile phones and digital conferencing platforms. Its utility lies in its simplicity and accessibility for users without access to more advanced communication technologies.