Jack Jachner

Calendar interface for digital communications

System and method for representation of user preference and policy in contact list

System and method for representation of presentity presence states for contacts in a contact list

Communication system and method for determining next joint availability using presence information

System and method for controlling access to conference calls

Presence and preference enabled voice response system and method

Multi-threaded instant messaging

System and method for managing user groups in presence systems

System and method for providing feature customization for a communications device based on an active communications session

Telephony/conference activity presence state