JPH05207145A - System for processing call in callee busy line - Google Patents

Abstract

PURPOSE:To prevent the repetition of recalling and unnecessary holding due to the repetition of recalling on a relaying path, etc., when a caller subscriber calls during the calling of a callee subscriber. CONSTITUTION:In a caller side exchange 20, a busy line message transfer mark is provided in a message storage reproducer 25 and a caller service record area 40. When the caller subscriber 11 who registers the service of busy call message transfer calls during the calling of the callee subscriber 12, the caller side exchange 20 connects the caller subscriber 11 to the message storage reproducer 25 so as to store a message. When a callee side exchange 30 receives the service call, an on-hook detecting part 34 monitors the callee subscriber 12 so as to detect on-hook and the call connecting device 32 of the callee side exchange 30 calls back the caller side exchange 20, calls the message storage reproducer 25 and connects the callee subscriber 12. The message storage reproducer 25 receives calling so as to reproduce and output the applying message.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a called party busy call processing system for processing a call when a called party is busy in an automatic switching system.

[0002]

2. Description of the Related Art Conventionally, this type of called party busy call processing system sends a busy signal to the calling side when the exchange detects that the called party is busy, and the calling party is busy. It was configured to listen to the sound.

[0003]

The above-described conventional called party busy call processing system is configured to simply notify the calling subscriber of the busy state of the called party by the busy tone. There are problems that the calling procedure is repeated until the calling subscriber calls the called party, and unnecessary traffic for holding the trunk line increases.

An object of the present invention is to connect a message accumulating / reproducing apparatus to a calling subscriber to store a message when the called party is busy, and to store this message when the called party becomes empty. Another object of the present invention is to provide a called party busy call processing system which solves the above problems by connecting to a reproducing device and reproducing and transmitting a message.

[0005]

SUMMARY OF THE INVENTION The basic configuration of a called party busy call processing system according to the present invention is a called party busy call processing for processing a call when a called subscriber is busy in an automatic switching system. In the system, the exchange sets the busy message transfer indicator in the calling service recording area for each calling subscriber, guides the message service by the instruction of the message recording, records the received message, and instructs the message sending. A message storage / reproduction device for reproducing and transmitting the recorded message, and a busy message transfer / incoming call recording area for recording predetermined information about a called subscriber who is busy when a call including the busy message transfer sign is received. The calling subscriber is connected to the message accumulating / reproducing device when the called subscriber for the call from the calling subscriber having the busy message transfer indicator in the caller service recording area is busy. While instructing message recording, the called The incoming caller is recorded in the busy message transferer incoming call recording area and the end of call is monitored, and when the called party who is busy ends the call, the called party stores and reproduces the busy message. Connect and drive to instruct message transmission.

[0006] One of the specific configurations added to the exchange described in the above basic configuration is a busy detection unit for detecting a called party busy signal that the exchange receives in response to a call to another station. , A call-end detection unit that detects the call-end of the called subscriber during a call according to an instruction, and the call-out subscriber makes a call to another station with a busy message transfer indicator in the call-out service recording area. When there is a call, a call setting request having this busy message transfer sign is transmitted to the called side, and when a called party busy is received as a result, this calling subscriber is connected to the message storing and reproducing apparatus. When a message storage is instructed, and then a call setup request including a message storage / transfer call return indication and a calling party number is received from the called side, the message storage / reproduction device is connected to this call to drive it, and a message is transmitted. While receiving a call setup request including the busy message transfer sign, There the call termination detecting unit connected to the line busy when busy, the message store and forward call return indication and the calling party number when detecting a call termination issues a request for call setup to the destination.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention.

As shown in the figure, a calling subscriber 11 is accommodated in a calling exchange 20 and calls a called subscriber 12 accommodated in a called exchange 30.

The calling side exchange 20 has a switch 21, a call connection device 22, a storage device 23, a busy detection section 24, and a message storage / reproduction device 25.

The called side exchange 30 has a switch 31, a call connection device 32, a storage device 33, and a call end detection unit 34.

The storage device 23 stores caller service recording area 4
0, and records the busy message transfer indication and the device number of the message storing / reproducing device 25 for each calling party number.

The storage device 33 has a busy message transfer / incoming call recording area 50, and records the calling party number and the number of the call termination detecting section 34 for each called number of the busy party.

These functions and connection states will be described in the following operation procedure.

FIG. 2 is a flow chart showing an example of the main operation procedure of the calling side exchange shown in FIG.

First, the calling side exchange 20 determines the calling subscriber 11
The call connection device 22 receives the call setting signal via the switch 21 (101). Although the call connection device 22 is included in the call setup signal, the busy message transfer in the caller service recording area 40 of the storage device 23 is performed by the caller number of the calling subscriber 11 detected from the accommodation position of the calling subscriber. Examine signs (10
2) Do.

When there is a busy message transfer indication (103),
The call connection device 22 forms a calling connection path 61 to the called side exchange 30 accommodating the called subscriber 12 and transmits (104) a call setup signal including a busy message transfer indication to call the called subscriber. 1
2 is called, and the calling connection 61 is connected to the calling subscriber 11 and the busy detection unit 24 by controlling the switch 21 (105).

When the called party 12 of the other party is idle, the ringing tone is received by the calling party 11, but when busy, a busy tone or a busy signal is received. The busy detection unit 24 detects (106) and notifies the call connection device 22.

Upon receiving the busy detection, the call connection device 22 releases the calling subscriber 11 and the busy detection unit 24 from the calling connection path 61 (107), and the calling subscriber 11 is transferred to the message storing / reproducing device 25. The connection is changed (108) and the device number (or the address of the recording area) is recorded in the caller service recording area 40. The message storage / reproduction device 25 provides voice guidance to the calling subscriber 11 when receiving and storing the message, and records (109) the message from the calling subscriber 11.

When the disconnecting state of the calling subscriber 11 is detected (110), the call connecting device 22 releases all connection of the switches (111) and waits for a call setting signal for call back from the called exchange 30. (112).

Upon termination of the called subscriber 12, the calling exchange 20 includes the caller ID of the calling subscriber 11 at the busy message transfer call return indication and the destination via the call return connection path 62. Since the call setting signal is received as a call (121), the message storing / reproducing device 25 is called (122) from the caller service recording area 40 with the caller number and connected to the call return connection path 62, and the message is transmitted. Instruct to play.

The message accumulating / reproducing device 25 receiving the call responds (123) and then reproduces and transmits (124) the accumulated message, so that the message is transmitted via the call return connection path 62 to the called side exchange 30. Sent to.

The call connection device 22 receives the disconnection signal (12
5) release all connections of switch 21 (1
26) to recover.

Next, the main procedure of the called side exchange will be described with reference to FIGS. 1 and 2 in FIG. FIG. 3 is a flowchart showing an example of a main operation procedure of the called side exchange.

First, the call connection device 32 that has received a call setting signal having a busy message transfer indication through the call connection 61.
Records the called party number and the calling party number in the busy message transfer / incoming call recording area 50 (201) and checks the called party status (202).

If the called party 12 is empty in step 202, the call connecting device 32 enters the calling operation procedure of the called party and erases the corresponding record in the busy message transfer / incoming call recording area 50 ( 220).

On the other hand, when the called party 12 is busy in step 202, the call connection device 32 connects the ending party detecting section 34 to the line of the called party 12 who is talking (203) to end the called party. Wait (204).

Of course, even if there is no hardware for the call end detection unit 34, the call connection device 32 confirms the reception of the disconnection signal via the switch 31 to detect the call end (205).
Is possible.

The call-end detecting unit 34 which has detected the call-ending, informs, for example, by voice, that there is a message.
(206) and the call connection device 32 is notified of the end of the call.

Upon reception of the call termination, the call connection device 32 displays the caller number of the calling subscriber 11 who has accumulated the message from the called party number of the called subscriber 12 in the busy message transfer / incoming call recording area 50. The indexing (207) is performed, the end-call detection unit 34 is released (208), and the call return connection path 62 to the calling side switching device 20 of the calling subscriber 11 is formed (209).

Next, the call connection device 32 uses the call return connection path 62.
A call setting signal including the calling party number of the calling subscriber 11 is transmitted (201) to the busy message transfer call return sign and the destination via the call origination operation.

The calling exchange 20 that receives this call connects the message storing / reproducing device 25 to the call return connection path 62 and responds, so that the call connecting device 32 receives the response signal (211).

Upon receiving the response signal, the call connection device 32 controls the switch 31 to connect the call return connection path 62 to the called subscriber 12. Accordingly, the message from the calling subscriber that is received following the response signal can be received and listened to (212) by the called subscriber 12.

The call connection device 32 detects the disconnection signal (21
3) Know the ending episode and release all connection settings (214)
To do.

In the present embodiment, the detection unit for only busy and end of call has been shown and described, but when applied to ISDN (Integrated Services Digital Network), it can be detected by the call connection device by message transmission, so voice notification etc. Limited to the functions of.

Although the call between the exchanges on the calling side and the called side has been illustrated and described, interconnection services within the same exchange are also possible.

Further, the storage area added according to the present invention can be included in each of the detection units. in this way,
The above description is not meant to limit the invention.

[0037]

As described above, according to the present invention, when the subscriber who has registered the provision of the busy message transfer service makes a call and the called subscriber is busy, the calling subscriber is stored and reproduced. When the called subscriber ends the call while connected to the device, the called subscriber connects to the message storage / playback device to play and listen to the message, thereby It is effective in preventing redialing and preventing traffic increase due to unnecessary holding of trunk lines.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a flowchart showing an example of a main procedure on the calling side in FIG.

FIG. 3 is a flowchart showing an example of main procedures on the called side in FIG.

[Explanation of symbols]

 11 Calling Subscriber 12 Called Party 20,30 Switch 22,32 Call Connection Device 24 Busy Detecting Unit 25 Message Accumulation / Reproducing Device 34 End Call Detecting Unit 40 Caller Service (Recording Area) 50 Busy Message Transfer Incoming Call Call (recording area)

Claims (2)

[Claims] 1. A called party busy call processing method for processing a call when a called party is busy in an automatic switching system, wherein a switch is busy in a calling service recording area for each calling party. Set the message transfer indicator, guide the message service with the message recording instruction to record the received message, and play back and transmit the message recorded with the message sending instruction, and the busy message transfer indicator. Including a busy message transfer / incoming call recording area for recording predetermined information about a called subscriber who is busy when receiving a call including a calling subscription having a busy message transfer indication in the caller service recording area. When the called party for the call from the person is busy, the calling party is connected to the message storage / playback device to instruct message recording, while the busy called party is busy. Record the call in the incoming call recording area of the message transferer and end the call. The called party is connected to the called message accumulating / reproducing apparatus to drive the called party, and the called party is instructed to send the message. Busy call processing method. 2. The busy exchange detecting section for detecting a called party busy signal received in response to a call to another station, and the exchange detecting an end of call of the called party who is talking on the basis of an instruction. A call termination detection unit, and when there is a call from a calling subscriber having a busy message transfer indicator in the call-out service recording area to another station, a call setting request having the busy message transfer indicator is made. Is sent to the called side, and when the called party is received as a result, this calling subscriber is connected to the above-mentioned message storing / reproducing apparatus to instruct message storing, and then the called side stores the message storing / transferring call back. When a call setup request including a sign and a calling party number is received, the message storage / reproduction device is connected to the call to drive the call, and an instruction to send a message is given, while a call setup including the busy message transfer sign is provided. When the called subscriber who received the request is busy, connect the call-end detection unit to the line in use and Called party busy call processing method according to claim 1, wherein the transmitting a request for the message store and forward call return indication and the calling party number when it detects call set destined for.