JPH0435433A - Call connection/disconnection method - Google Patents

Abstract

PURPOSE:To grasp the connection/disconnection relation of other terminals in respective terminals by permitting the specified terminal to inform all subscribing terminals of same information showing a terminal priority order. CONSTITUTION:When a terminal controlling a priority relation on the connection/disconnection of a call is assumed to be A, the terminal A connects the call to all the terminals B, C and D which are to be subscribed. Then, connected channels 201, 202 and 203 copy and transmit terminal priority order control tables for the number of connection points to the terminals B, C and D. When respective terminals receive the control tables, they check connection conditions with the terminal whose priority order is lower than the self terminal in the sequence of the content of the control table. When it is not connected, the call is connected. When a disconnection request is received, the call with the terminal whose priority order is lower than the self terminal is disconnected based on the terminal priority order control tables which respective have. Thus, respective terminals can grasp the connection/disconnection conditions of all the terminals.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a call connection and call disconnection method when, for example, a plurality of terminals at multiple locations hold a conference through multipoint communication.

"Prior art" Conventionally, call connection between any two points in multipoint communication,
When disconnecting a call, there was no management of connection/connection, disconnection/disconnection, and calls could be connected or disconnected from any connected terminal.

This conventional method does not manage priority relationships for connection and disconnection of calls in multipoint communication, so the connection format is a star type, and the connection relationships are centrally managed at the node. There is no problem if the disconnection direction is known, but if the multipoint connection format is a mesh type, for example, as shown in Figure 11, terminals A, B, C, D
If the user is in a conference call, the terminal can autonomously
3. When disconnecting 105.106 and exiting the conference, terminals A, B, and C can recognize that the call has been disconnected between themselves and the terminal, but the terminal cannot communicate with other terminals. There was a problem in that it was not possible to grasp the fact that the project had ended. In other words, there is a problem in that, for example, terminal A cannot determine whether the other terminal has left the conference or whether only the connection with terminal A has been severed.

SUMMARY OF THE INVENTION An object of the present invention is to provide a call connection/disconnection method that allows each terminal to grasp connection/disconnection relationships of other terminals in inter-point communication using a mesoche connection type.

"Means for Solving the Problem" According to the present invention, the priority relationships for connection and disconnection of calls among all participating terminals are managed by a specific terminal, and the specific terminal uses the same information indicating the terminal priority order. The notification is sent to all participating terminals, and all participating terminals understand the connection and disconnection directions of calls between all participating terminals from the received terminal priority information, and all participating terminals can connect and disconnect calls from a specific terminal. In response to the disconnection notification, the call is connected/disconnected to a terminal whose terminal priority is lower than that of the own terminal.

"Example" The method of the present invention will be specifically described below with reference to the drawings. FIG. 1 shows the connection status at the start of communication between multiple points. Assuming that there are eight specific terminals, that is, terminals that manage priority relationships regarding call connection and disconnection, terminal A first sends a message to participating terminals B, C, and Dc: 7201.202.203 in order to perform inter-point communication. The call is connected in the directions shown in .

Next, through the connected communication paths 201, 202, and 203, the terminal priority management table shown in FIG. 2, for example, is copied and transmitted to each of the terminals B, C, and D for the number of connection points. At this time, terminal A also has the same terminal priority management table.

When each terminal receives this management table, it checks the connection status with a terminal whose priority is lower than its own terminal in the permutation of the contents of this management table, and if it is not connected, it decides to make a call connection. Further, when a disconnection request is received, the call with a terminal having a lower priority than the own terminal is disconnected based on the terminal priority management table possessed by each terminal. Management and transmission of this management table is limited to specific terminals. The timing for transmitting this management title is only when the connection state of a call for inter-point communication is changed, or when there is a change in the terminal having the right to manage the table.

Therefore, terminals B and C that received the terminal priority management chillful message shown in FIG.
A call connection is made in the directions indicated by 5 and 406.

Next, a call connection situation when terminal E is added to inter-point communication during communication will be described. After terminal A establishes a call connection with terminal E in the direction shown at 507, the terminal
For example, as shown in FIG. 5, a terminal priority management file is created by inserting E between A and B in the previous management table shown in FIG. Send to. Terminal E, which has received this, connects a call to a lower-level terminal as shown in FIG. 8. Terminals B and C
Since a connection has already been made to a lower-level terminal, there is no connection processing for the communication paths 701 to 707.

On the other hand, when disconnecting, for example, if only terminal C leaves the multipoint communication, terminal C notifies terminal A of leaving. For example, after redistributing the terminal priority management table with Munich C at the top, as shown in FIG.
A disconnection request (permission to leave) is given to terminal C. According to the management table shown in FIG. 7, terminal C assigns 902.90, 1 .
906.909 to disconnect the call. On the other hand, terminal A is
The terminal priority management table shown in FIG. 9 is redistributed to terminals B, D, and H.

Following this situation, if all communications are to be terminated, terminal A sends a disconnection request to terminals B, D, and E, and each terminal then performs the following operations according to the management table shown in FIG. 9 that it owns: Calls are disconnected in the direction shown by arrows 1101 to 1106 in FIG. 10 for terminals with lower priority than the own terminal.

``Effects of the Invention'' As explained above, the present invention makes it possible to manage call connection/disconnection priority relationships at specific terminals even in inter-point communication where the connection type is a mesh type, and to maintain the same terminal priority relationship. A ranking management table is sent to all terminals, and each terminal uses the same table to grasp the connection/disconnection priority relationship for calls between all terminals participating in communication, and to connect/disconnect calls from a specific terminal. By connecting/disconnecting calls to terminals lower than its own terminal in response to notifications, terminal A can grasp the connection/disconnection status of all terminals, and can inquire of terminal A of other terminals. You can know by

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the call connection direction at the start of communication between multiple points in an embodiment of the present invention, FIG. 2 is a diagram showing a terminal priority management table, and FIG. 3 is based on the management table in FIG. 2. Figure 4 is a diagram showing the call connection direction when a communication participant is added midway, Figure 5 is a diagram showing the terminal priority management table, and Figure 6 is the management table in Figure 5. 7 is a diagram showing the terminal priority management table, and FIG. 8 is a diagram showing the call disconnection direction when a communication participant leaves midway based on the management table of FIG. 7. Figure 9 is a diagram showing the terminal priority management system, Figure 1.
Figure 0 shows the call disconnection direction at the end of all communications based on the management table shown in Figure 9, and Figure 11 shows the problem when applying the conventional call connection/call disconnection method to mesh type multipoint communication. It is a figure showing a point.

Claims (1)

[Claims] (1) In multipoint communication where the connection type is mesh type, a specific terminal manages the priority relationship of call connection/disconnection between all participating terminals in the multipoint communication, and that specific terminal has terminal priority. The same information indicating the ranking is notified to all the participating terminals, and each of the participating terminals grasps the connection direction and disconnection direction of the call between all the participating terminals from the received information indicating the terminal priority, and all the participating terminals The call connection/disconnection method is characterized in that a call is connected/disconnected to a terminal whose terminal priority is lower than that of the own terminal in response to a call connection/disconnection notification from the specific terminal.
Cutting method.