The telephone system supports multiple conference calls, with additional parties addable to any conference call until the system's conference capacity is reached. A maximum of 64 parties in any particular conference call is supported.
If you are the only internal user in the conference, depending on your telephone system's configuration, dropping yourself might end the conference. Consult your system administrator for details.
On J159 telephones, in addition to the Conf soft key, conference functions can be accessed using the key.