KR950022648A - Method of Conference Call in Circuit-Switched Network - Google Patents

Abstract

A conference call method of a circuit switched network including at least two exchanges for storing predetermined conference group information is disclosed. According to the present invention, in a circuit switching network composed of a plurality of exchanges, a predetermined conference group is formed with subscribers in the main exchange and subscribers in another exchange, and each conference group performs a conference call at the selection of conference requesters registered in the conference group. It has the advantage to do it.

Description

Conference Call Method in Circuit-Switched Networks

Since this is an open matter, no full text was included.

6 is a flow chart of a conference call in a main exchange in accordance with the present invention.

7 is a subroutine execution flow diagram of performing a call routing routine in the call flow of FIG.

8 is a flow diagram of another exchange that responds to a subscriber discovery signal of a main exchange during the flow of FIG. 6;

9 is a flow chart of another exchange corresponding to the status check signal of the main exchange during the flow of FIG. 6;

Claims (6)

A conference call method in a rotary switching network comprising at least two exchanges storing predetermined conference group information, comprising: a conference group number receiving step of receiving, by a main exchange, a conference group number from a subscriber requesting a conference function; A subscriber retrieval step of retrieving whether a subscriber is connected to a child node by accessing information of subscribers registered in the corresponding conference group from the conference group information according to a group number; A self-node subscriber information storing step of storing the subscriber's information and call line information in the service work area and sending a status check signal to the subscriber; and if it is found that the child node is not corresponding to the subscriber searching step, the subscriber is transferred to another exchange. A search signal transmission step of transmitting a search signal, and the subscription A presence response step of receiving a subscriber discovery signal by the second exchange connected to the subscriber station and transmitting an existence response signal; and responding to the subscriber discovery signal in response to the child node subscriber information storage step and the discovery signal transmission step. A presence response signal receiving step of retrieving a signal reception, storing information of a second exchange in response to receiving a presence response signal in the conference group service work area, and transmitting a status check signal; Receives a check to check the status of the call of the subscriber and outputs a status check response signal including the information of the call of the subscriber, sends a ring tone to the subscriber, the hook-off signal in response to the call signal from the subscriber Is received, sends a response signal to the main exchange, and then connects the call path of the corresponding subscriber of the main exchange. A status check response step, the main exchange receiving the status check response signal, and receiving a status check response signal for storing information on a call of the subscriber in a conference group service work area, and the main exchange receiving the response signal; A call connection step of connecting the answer subscriber with the conference call path and searching whether the connection of the subscribers registered in the conference group is completed in response to the call connection step; A conferencing call in a circuit-switched network, characterized in that it comprises a complete search step that transitions to a search step. 2. The method of claim 1, wherein the presence response step includes a receiving step in which the second exchange receives a subscriber discovery signal from the main exchange, and the second exchange responding to the received subscriber discovery signal in the corresponding node. A subscription search step of searching for subscription, a first transmission step of transmitting a presence response signal to the main exchange when the corresponding subscriber is found corresponding to the subscription search step, and corresponding to the subscription search step. And a second sending step of sending out the subscriber search signal to another exchange except the main exchange if the subscriber is found not to be subscribed. The method according to claim 1 or 2, wherein the status check response step includes a status check signal receiving step of receiving a status check signal from the main exchange by a second exchange, and a state of a corresponding subscriber call of the received status check signal. A state check response sending step of transmitting a state check response signal including information on a call to the main exchange when the corresponding subscriber is found to be idle in response to the call searching step and the call searching step; A response search step of transmitting a ring tone to the subscriber in response to the status check response signal transmission in the status check transmission step and searching for a hookoff signal of the subscriber; and if a hookoff signal is found from the subscriber, a response signal to the main exchange. It is characterized in that consisting of the subscriber connection step of transmitting the and the main exchange and the subscriber's call path How the conference call from the circuit-switching network. A conference call method in a rotary switching network comprising at least two exchanges storing predetermined conference group information, comprising: a conference group number receiving step of receiving, by a main exchange, a conference group number from a subscriber requesting a conference function; A subscriber retrieval step of retrieving whether a subscriber is connected to a child node by accessing information of subscribers registered in the corresponding conference group from the conference group information according to a group number; A self-node subscriber information storing step of storing the subscriber's information and call line information in the service work area and sending a status check signal to the subscriber; and if it is found that the child node is not corresponding to the subscriber searching step, the subscriber is transferred to another exchange. A search signal transmission step of transmitting a search signal, and the subscription An existence response step of receiving a subscriber discovery signal and transmitting an existence response signal, and a presence response signal, a state check signal, and a response in response to the discovery signal transmission step or child node subscriber information storage step; A reception search step for searching for reception of a signal; and if a reception of the presence response signal is detected in the reception search step, a node number of the corresponding exchange transmitting the existence response signal is present in the presence response signal search step; In response to a result, adding a node number of the exchange to the subscriber information, storing the state number in the conference group service work area, and sending a state check signal including connection channel information with the exchange to the corresponding exchange; And when it is detected that the status check signal is received in the reception searching step, the status check signal is transmitted. A trunk channel information storage step of storing trunk channel information in the exchange in a conference group service table; and when a response signal is detected in the reception retrieval step, connecting the conference subscriber to the conference call with the response signal; In response to the conference call connection step and the call path connection step, it is searched whether the call is completed by the call of the subscribers registered in the conference group. Conferencing call method in a circuit-switched network characterized in that the configuration. 5. The method as claimed in claim 4, wherein the presence response step includes a reception step in which the second exchange receives a subscriber discovery signal from the main exchange, and the second exchange corresponds to a subscriber discovery signal in the corresponding node in response to the received subscriber discovery signal. A subscription search step of searching for subscription, a first transmission step of transmitting a presence response signal to the main exchange when the corresponding subscriber is found corresponding to the subscription search step, and corresponding to the subscription search step. And a second sending step of transmitting the subscriber search signal to another exchange except the main exchange when the subscriber is found not to be subscribed. 6. The method according to claim 4 or 5, wherein the status check response system receives a status check signal receiving step from which the second exchange receives a status check signal from the main exchange, and retrieves the status by a corresponding subscriber call of the received status check signal. A state check response sending step of transmitting a state check response signal including information on a call to the main exchange when the corresponding subscriber is found to be idle in response to the call searching step and the call searching step; A response search step of transmitting a ring tone to the corresponding subscriber and searching for the hook-off signal of the subscriber in response to the status check response signal transmission in the check-out step; and if the hook-off signal is found from the subscriber, the response signal is sent to the main exchange. Characterized in that it comprises a subscriber connection step of transmitting and connecting the main exchange and the subscriber's call path Method of conference call in circuit-switched network. ※ Note: The disclosure is based on the initial application.