McDewey

Figure 2: Negotiation of Conference INFO Package Having negotiated use of the INFO conference package, the endpoint must be ready to receive conference INFO at any time during the life of the dialog. It may find itself in and out of conferences throughout the life of the dialog. The end of the conference does not guarantee that the endpoint will not receive more conference updates. The call could transit from 3 way to 2 way and back to 3 way. Figure 3: Creating 3-way Conference, on page 35 depicts creation of a 3 way conference: SIP Line Messaging Guide (Standard Edition) for Cisco Unified Communications Manager 34 SIP Standard Line Interface INFO Conference Package Negotiation