Nortel Meridian 1 Administration And Maintenance page 45

Add a conferee The ISDN BRI user can add a conferee with Consultation
Hold, add a held call to an active conference, or add an active call to a held
conference providing:
— the Conference Controller (an ISDN BRI user who is subscribed to
Conference) is connected to only one active speech or 3.1 kHz audio call
— both the active call and the held call have been answered
— neither the active call nor the held call is undergoing call clearing
— the controller's conference size is not exceeded
— the B-channel to which the Conference Controller is connected can be
used to complete the conference
— both calls are not conference calls
Conference disconnect If the controller requests a disconnect signal, the
network disconnects the entire conference if:
— only one party will remain after the controller disconnects
— none of the calls that will remain has been answered
— only two parties remain and both are outgoing trunk calls
— more than two parties remain and all are trunk calls
Otherwise, only the controller is disconnected and the rest of the conferees
remain.
Call Transfer during Conference Using the Conference feature, a Call
Transfer can be achieved in the following way:
Ann makes a call to Bob. Bob answers the call and conferences Carl. After
Carl answers the call, Bob completes the conference. Then Bob can
disconnect himself from the conference, thus transferring Ann to Carl.
The same conditions that determine whether the remaining parties in a
conference should be dropped when one party disconnects from the
conference apply here. For example, Bob makes a call to Ann. Then Bob
conferences in Carl. If both Ann and Carl are on a remote node (that is, both
calls made by Bob to Ann and Carl are outgoing trunk calls), then as Bob
disconnects from the conference, both Ann and Carl will be dropped as well.
Call Transfer cannot be achieved in this scenario.
Option 11C
Chapter 2 — Feature descriptions
ISDN BRI Administration and Maintenance
Page 31 of 492