With call conferencing, you can enjoy a telephone call with up
to 4 other people regardless of your various locations.
Usage
To set up a conference call, connect to the first
number, put the call on hold and connect to the next number
until all of the 5 numbers are connected. Once this is done,
from the option menu of your phone, select 'conference'.
For further information, consult your handset
manufacturer's guide.