A conference bridge allows a group of people to participate in a phone call. The most common form of a bridge allows participants dial into a virtual meeting room from their own phones. Bridges can be used to hold a meetings with employees, talk to a customer as a group, conduct an interview with potential employees or whatever else you may need a virtual meeting place for.
With a Silicon Maine conference bridge you can schedule dates and times that your bridge is available. With the use of a PIN you can allow only the people you want to enter the bridge. As an administer you can even drop people off of the call if you choose. Sometimes you may even want for only some people to hear what is being said or to disallow others from speaking, using the deaf and mute options within the web portal you will help you accomplish this as well.