Conference call and Three-way calling

Conference call noun - A telephone call in which more than two people participate.

Three-way calling and conference call are semantically related. in group telephone meeting topic. In some cases you can use "Three-way calling" instead a noun phrase "Conference call".

Three-way calling noun - A way of adding a third party to your conversation without the assistance of a telephone operator.

Conference call and three-way calling are semantically related. You can use "Conference call" instead a noun phrase "Three-way calling".