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Conference call

technology Maturity 11-13 Next article →

A conference call lets many people share a single telephone line at the same time.

Conferencecallphone
Conferencecallphone

This is also called an audio teleconference. These calls can be set up in different ways. Sometimes, everyone on the call can talk to each other. Other times, the call is set up so that some people only listen. They cannot speak during the meeting. This helps people stay organized during a large talk. It is a very useful way to connect people from far away.

There are a few ways these calls work. One simple way is called three-way calling. First, two people make a normal phone call. Then, one person tells the other they will add a third person. They press a button called a hook flash or a recall button. After they dial the third person, they press the button again. This connects all three people together instantly. This method does not need a special conference server. All the mixing of the sound happens right at the phones.

Conferencecallphone
Conferencecallphone

For larger groups, people use a conference bridge. A conference bridge is a special piece of equipment that links many telephone lines. Many companies use a service provider to manage this bridge. These providers give out telephone numbers and PIN codes for people to dial. They can even dial out to people to introduce them to the group. An operator can also help manage the call. They can mute certain lines or record the whole meeting for later.

Conferencecallphone
Conferencecallphone

Businesses use these calls every single day. They use them for sales presentations, team meetings, and training classes. It helps companies save money because workers do not have to travel. In the United States, almost all public corporations use these calls. They use them to report their quarterly results to people called stock analysts. These are known as earnings calls. During these calls, a CEO or CFO will read a report. Then, the call is opened for questions from the analysts.

Conferencecallphone
Conferencecallphone

Today, many people use conference calls with the internet. This is often called a web conference. During a web conference, people can share documents or presentations on a screen. This allows everyone to see the same data at the same time. It is helpful because the presenter can explain details while others watch. Some people even use these calls for podcasting or social networking. You can even watch a live stream of a call. This lets a huge audience listen without needing to dial into a bridge.

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