The demand for Internet packet teleconferencing has arrived. Yet, an infrastructure to support the demand is barely in place. Conference control is one component of the infrastructure, and may be defined as the management and coordination of multiple sessions, and their multiple users in multiple media. The Conference Control Working Group is chartered to design a session layer protocol to perform these functions. Toward this end, the Working Group will catalogue existing approaches to conference control, identify the requirements for providing these services across the general Internet, then define a small, but broad set of conference styles that are most useful to support. For instance, we anticipate the need to accommodate both loose- and tightly-controlled sessions. Ultimately, the WG will work to specify, implement and deploy the confctrl protocol within IETF teleconferencing software over the MBONE. While scalability will be a critical design goal, the full implication of security is likely to be addressed at later stages in the effort. This Working Group falls under the supervision of the Remote Conferencing Architecture steering group. As such, it will provide an interface to the Realtime Transport Protocol proposed in the Audio/Video Transport Working Group. In addition, this Working Group will track the progress of other groups as they relate to the confctrl effort: directory services for cataloguing users and conferences, resource reservation and management at the network level, schemes for multicast address allocation.