Service collaboration system

摘要

A user interaction type service collaboration system, in which a user terminal (US) calls Web service provisioning servers (WS) in sequence via a Web portal server (WP) and a service scenario execution server (SES), and each Web service provisioning server (WS) carries out interaction processing with the user terminal (US), is provided with a callback control server (CCS) having: a callback control part (CC) responding to reception, from the Web service provisioning server (WS), of the callback request accompanied by a callback user ID, and transmitting an interaction processing start request to the user terminal (US) using an ID identifying the user terminal (US) or a session due to the user terminal (US); and a callback ID management (CIM) part associating and managing IDs and callback user IDs and acquiring IDs corresponding to callback user IDs.