AUTOMATIC CONNECTION SYSTEM FOR TRIPARTITE SPEAKING

摘要

PURPOSE:To quickly and automatically execute connection by originating a call to one communication terminal by providing a function to automatically connect terminals for tripartite speaking in a digital communication network like an INS. CONSTITUTION:After establishing a call between a first user communication terminal 1 and a second user communication terminal 2, the instruction of mixing with a third user communication terminal 3 and the call number of the terminal 3 are transmitted from the terminal 1 to the terminal 2 by using a control channel B. Afterwards, the terminal 2 receives the mixing instruction from the terminal 1 by an identification part 11, and a mixing mode is activated through a call control part 17 to the network. Therefore, the terminals 1 and 2 are turned to a held state, and the call number is originated from the terminal 2 to the terminal 3. Afterwards, when the response of the terminal 3 is detected by a response detection part 14 of the terminal 2, holding between the terminals 1 and 2 is canceled by outputting a mixing request to the network. Thus, connection for tripartite speaking is automatically executed.