JP2730016B2 - Transfer function release processing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer function release processing method in a switching system which enables a service for transferring a transmission from a calling terminal to a transfer registration terminal (a transfer source terminal) to a transfer destination terminal.

[0002]

2. Description of the Related Art Conventionally, in a switching system, for example, a so-called CFU for unconditionally transferring a call arriving at a transfer source terminal from a calling terminal to a third party (a transfer destination terminal) during a certain period.
A transfer service such as a (Call Forwarding unconditional call transfer) function is enabled.

In the conventional switching system, it is recognized that only a user who can register a transfer function releases a transfer function by inputting a function access code according to a procedure shown in FIG. Was.

More specifically, a procedure of a conventional transfer function release processing method will be described with reference to FIG. 10. First, a user (transfer source user) who has registered a transfer function transmits a function release code, for example, # 211 #. When input from the ISDN terminal (operation in the figure), the network (switching system based on the stored program control system) receives the telephone number (access code) (operation in the figure) and translates this access code. (Operation in the figure), and cancels the transfer function (operation in the figure). When this transfer function is released, the network sends a release completion notification to the ISDN terminal that has input the function release code (operation in the figure), and the ISDN terminal receives this and transfers the transfer service to the terminal.
The release of the service (function) is displayed (operation in the figure). You
The user confirms that the release of the transfer function has been completed by this display (operation in the figure).

[0005]

As described above, in the conventional transfer function release method, a user who can transfer and register (a transfer source user).
Only its release is allowed. On the other hand, the transfer source user
The user has registered the transfer function without the permission of the transfer destination user. The destination user of the transfer destination has no means of recognizing whether the incoming call is a general call that is not a transfer or a transfer call, and has no right to reject the transfer call.

[0006] Therefore, in the case of transfer due to erroneous operation or malicious intention of the transfer source user, there has been a problem that the transfer destination user is inconvenienced. However, the conventional method does not take measures against the erroneous operation or malice of the transfer source user into consideration, and there has been a long-awaited desire to develop a system capable of solving such inconvenience.

[0007]

FIG. 1 shows a principle diagram of the present invention, and FIGS. 2 and 3 show a procedure of a transfer function release processing system of the present invention.

In FIG. 1, 1 is a switching network which is a time division network, 2 is a subscriber concentrator, 3 is a line terminator,
Reference numeral 31 denotes a subscriber's circuit, which is a switching center up to this point. As home equipment, the line connection control device 4 and the ISDN terminal 5
A, 5B and 5C are connected. Reference numeral 6 denotes a call processor included in the network 1, which internally includes a central control unit 7, a main storage unit 8, a channel control unit 9, and a file storage unit 1.
It has 0. The transfer function is registered in the file storage means 10 in accordance with an instruction from the terminal 5A capable of transfer registration, and the number of the transfer destination terminal (for example, 5B) is registered.

[0009]

Next, the procedure for confirming the notification of the transfer call to the transfer destination user by the central control means 7 will be described with reference to FIG. When the central control means 7 receives the communication from the calling terminal 5C to the transfer registration terminal 5A and identifies that it is a transfer call based on the transfer function registered in the file storage means 10 (operation in the figure), Based on the registered transfer destination terminal 5B number,
Before the call is received by the transfer destination terminal 5B, the fact that the call is a transfer call is notified (operation in the figure). Indicates the telephone number of the transfer source terminal 5A) (operation in the figure). The destination user at the transfer destination sees the transferred call display, confirms that the call is a transferred call, confirms the transfer source user (operation in the figure), and can judge whether the transferred call is approved or rejected (FIG. Operation during).

Next, a processing procedure for releasing the transfer function due to the rejection of the transfer call of the called user will be described with reference to FIG. When the called user recognizes that the incoming call has arrived by the transfer call and does not accept it, no operation is performed (operation in the figure). When the transfer call is rejected, a transfer call rejection code such as "# 211 * 9821002 #" is input to the terminal 5B so as to normally transmit (operation in the figure). The network 1 receives this telephone number (access code) (operation in the figure), translates this access code (operation in the figure), cancels the transfer function (operation in the figure), and transfers the data. The transfer terminal release notification is sent to the registration terminal (transfer source terminal) 5A (operation in the figure), and the transfer function release is displayed on the transfer registration terminal 5A (operation in the figure). The transfer source user can confirm that the transfer function has been canceled by viewing this display.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. First, the confirmation processing method of the transfer call to the transfer destination user is shown in the connection sequence diagram of FIG. 4 and the call processor 6 of FIG.
This will be described with reference to the flowchart of FIG. Here originating terminal 5
The telephone number of C is 982-1001, the telephone number of the transfer registration terminal (source terminal) 5A is 982-1002, the telephone number of the transfer destination terminal 5C is 982-1003, and the network 1 is an ISDN exchange network. I do.

First, the calling user dials the telephone number of the user who wants to receive a call from the calling terminal 5C, in this case, the telephone number of the transfer registration terminal 5A of the transfer registration user, and sets a call setting message (SETU).
P) to the network 1, the network 1 sends a call setup message (S
Call setup acceptance message (C) indicating acceptance confirmation of ETUP
ALL PROC) is returned to the calling terminal 5C, and in step 100, this telephone number is received (operation in the figure).
In step 101, the telephone number is translated (operation in the figure).

Next, the network 1 confirms whether the telephone number (982-1002) received in step 102 is a transfer registration subscriber (user) (operation in the figure). As means for identifying the transfer registration, reference is made to the subscriber data 200 stored in the file storage means 8 of the call processor 6, and processing for confirming whether or not the subscriber is a transfer registration subscriber is performed in step 103.

In this case, since transfer registration has been made by the transfer source user, a transfer call notification process is performed in step 104 (operation in the figure). Notification of a transfer call
This is performed by adding the call setup message (SETUP) notified from the network 1 to the transfer destination terminal 5B (step 1).
05).

In this case, the call setup message (SETU
P) includes a common unit 300 and an individual unit 301 as shown in FIG.
01 as a display information element 302.

The transfer destination terminal 5B sends a call setup message (SE
TUP), a display as shown in FIG. 6 is displayed on the terminal. In the figure, 9821001 is the telephone number of the calling user, CFU98
21002 indicates the telephone number of the transfer registration user (transfer source). As a result, the called user can identify that the call has been transferred, and can determine whether to accept or reject the transfer based on the telephone number of the transfer registered user.

At this time, the transfer destination terminal 5B transmits a call message (ALERTING) to the network 1, and the network 1
Send a call message (ALERTING) to C.
At this stage, if the called user accepts the transfer and responds, the terminal 5
B sends a response message (CONNECT) to the calling terminal 5C via the network 1, and the channel is connected to the terminals 5B and 5C.
Communication between C starts. Thereafter, communication and disconnection are performed by the general procedure of circuit switching as shown in FIG.

Next, a transfer function release processing method by the transfer destination user rejecting the transfer call will be described with reference to the connection sequence diagram of FIG. 7 and FIG.
Will be described with reference to the flowchart of the call processor 6 of FIG.

When the called user who can recognize that the incoming call has arrived in the transfer call determines that the transfer call is rejected, and executes the transfer rejection, the transfer call rejection code "# 211 * 98" is used as if dialing normally.
21002 # "and call setting message (SE
TUP) to the network 1. Net 1 is step 106
While receiving this telephone number (access code) (operation in the figure), it returns a call setting acceptance message (CALL PROC) indicating confirmation of acceptance of the call setting message (SETUP) to the calling terminal 5C. Next, at step 107, the code for rejecting the forwarded call is translated (operation in the figure), and step 108 is performed.
Use to confirm that the transfer function is canceled. If it is determined in step 109 that the telephone number is the transfer function release telephone number, the transfer function release processing is executed in step 109 (operation in the figure).

As means for canceling the transfer function,
The transfer refusal code is received from the transfer destination user, and the telephone number of the transfer registration user (982-1002) is received in step 110.
Is referred to the subscriber data 200 stored in the file storage means 8 of the call processor 6 based on the
In step 1, the power generation number (982-1003, release request source) and the transfer destination telephone number (982-1003) are compared and collated, and since they match, release of the transfer function is permitted (operation in the figure).

The network 1 guarantees only the user (982-1002) who has registered the transfer function and the called user (transfer destination user, 982-1003) who can cancel the transfer function. To prevent the function from being released by an unauthorized person. This relationship is also guaranteed in the case of multi-stage transfer.

After canceling the transfer function, step 1
At 12, the transfer registration terminal 5A (transfer source terminal) is notified of the release of the transfer function (operation in the figure). The notification of the completion of the transfer function release is performed by adding the call setup message (SETUP) notified from the network 1 to the transfer registration terminal 5A (step 113).

In this case, the call setup message (SETU
As shown in FIG. 8, P) includes a common unit 400 and an individual unit 401, and a release completion notification is added to the facility unit of the individual unit 401 as a display information element.

Upon receiving the call setup message (SETUP), the transfer registration terminal 5A of the transfer source performs a display as shown in FIG. 9 on the terminal. The figure indicates that the transfer function (CFU) has been released by the transfer destination user (982-1003). Thereby, the transfer registration user can confirm that the transfer function has been canceled by the transfer destination user.

After that, the network 1 sends a response message (CONN
ECT) to the transfer destination terminal 5B, and thereafter, disconnection is performed by a general circuit switching procedure as shown in FIG.

Although the embodiment has been described with reference to the image within the own station, the same sequence can be applied between the stations. For example, a rejection code or the like is a call setup message (SET
UP), and sends it to the partner station so that the partner station (network) cancels the transfer function. Further, the transfer function release completion notification is
It may be added to the call setup message (SETUP) and notified / displayed from the partner station to the transfer function registered user (transfer source).

In the embodiment, unconditional call transfer (CF
Although the present invention is applied to U), the present invention is not limited to this, and the present invention is also effective for call forwarding during busy (CFB) and call forwarding when there is no response (CFNR).

[0028]

As described above, in the present invention,
The transfer destination destination user can recognize whether the call is a general call or a transfer call at the terminal, reject the transfer call, and release the transfer function of the network by remote control. This makes it possible to take measures against the transfer service based on erroneous operations, malicious intentions, etc., and to contribute to the improvement of the transfer service in the switching network.

[Brief description of the drawings]

FIG. 1 is a principle diagram of the present invention.

FIG. 2 is a diagram showing a procedure for confirming notification of a transfer call to a transfer destination user;

FIG. 3 is a view for explaining a processing procedure for releasing a transfer function due to rejection of a transfer call by a called user;

FIG. 4 is a connection sequence diagram for explaining a transfer call confirmation processing method to a transfer destination user;

FIG. 5 is a flowchart of a call processor for explaining a transfer call confirmation processing method to a transfer destination user;

FIG. 6 is a diagram showing a display example on a transfer destination terminal.

FIG. 7 is a connection sequence diagram for explaining a transfer function release processing method by rejection of a transfer call by a transfer destination user.

FIG. 8 is a flowchart of a call processing processor for explaining a transfer function release processing method by rejection of a transfer call by a transfer destination user;

FIG. 9 is a diagram showing a display example on the transfer registration terminal.

FIG. 10 is a diagram illustrating a procedure of a conventional transfer function release processing method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Switching network 5A ISDN terminal 5B ISDN terminal 5C ISDN terminal 6 Call processor 7 Central control means 10 File storage means

Claims (3)

(57) [Claims] 1. A switching system comprising a switching network (1) and a processor (6), and executing a connection between terminals (5) through the switching network (1) under the control of the processor (6). in the processor (6), in response to an instruction from the transfer registration terminal (5), the transfer function of transferring the transmission to the transfer registration terminal (5) to a specific <br/> transfer destination terminal (5) And a control unit for transferring a transmission from the calling terminal (5) to the transfer registration terminal (5) to the transfer destination terminal (5) based on the registered transfer function. Central control means (7) for performing the switching from the calling terminal (5).
If there is a transmission to the transmission registration terminal (5), the transfer
The transmission is transferred according to the transfer function for the registration terminal (5).
For the transfer destination terminal to be sent (5), the transfer register
Performs a notification that the information and transfer the call of the terminal (5), said from the transfer destination terminal (5) in response to the notification
The information of the transfer registration terminal (5) and the transfer refusal request are sent out.
Was the time, the transfer register end based on the transfer refusal request this
A transfer function release processing method for releasing a transfer function of transferring a transmission to the terminal (5) to the transfer destination terminal (5) . 2. The information of the transfer registration terminal (5) is
2. The transfer function release processing system according to claim 1, wherein the transmission function registration terminal is a terminal number of the transmission registration terminal . Wherein said central control means (7), when releasing the said transfer function, to said transfer registration terminal (5)
2. The transfer function release processing method according to claim 1 , wherein notification of the release of the transfer function is performed.