A conference call is a service that allows three or more participants to hold a voice conversation simultaneously. It is widely used in business for real-time discussions with remote team members. Even as video conferencing tools (Zoom, Microsoft Teams, Google Meet) have become mainstream, the simplicity of a phone-based conference call remains valuable when on the move or when video is unnecessary.
There are three main methods for conference calls. First, carrier three-way calling services - a standard feature on mobile phones that lets you add another number during a call for a three-way conversation, typically costing about 200 yen per month. Second, dedicated conference call services where the host issues a dial-in number and PIN code, and participants call in to join. These support meetings of dozens to hundreds of participants and include recording and mute controls. Third, the audio call feature of web conferencing tools - using the "join by phone" option in Zoom or Teams allows participation via phone line even without an internet connection.
Tips for running effective conference calls include establishing a rule that participants state their name before speaking when there are more than five people. To prevent background noise, participants who are not speaking should mute themselves. Designate a note-taker in advance or use call recording to review the content later.
Companies using cloud PBX can also initiate conference calls directly from extension numbers. VoIP-based conference calls are free or low-cost, keeping expenses down even for international meetings. See Business Phone Number Guide for how to set up a corporate phone environment.