The image shows a BPEL process on the left, a human task service component in the middle, and client applications on the right. The BPEL process has invoke and receive activities, as well as a human task with incoming and outgoing arrows from and to the human task service component in the middle. The human task service component is divided into three boxes from left to right: service interface, task deadline, and client interface. The task deadline box shows roles and assignments, deadlines and escalations, and presentations. Connecting to the human task service component from the bottom is a database labeled Identity Directory (LDAP, for example). The client application section on the right has the following entries top to bottom: Oracle BPM Worklist, Portals, Email and RSS Clients, and Phone and other notification channels. Each entry has incoming and outgoing arrows from and to the client interface part of the human task service component.