JPH07105845B2 - switch - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in telephones and other exchanges for communication lines. The present invention is suitable for use in an extension telephone exchange. The present invention relates to call forwarding services. In particular, it relates to regulation of call forwarding when the call forwarding destination goes through a pay line.

[0002]

2. Description of the Related Art Incoming call transfer services include busy transfer, which transfers an incoming call to another terminal line designated in advance when the called terminal line is busy, and called terminal line. When there is no answer to a ringing for a certain period of time, the incoming call is forwarded to another designated terminal line, and the incoming call is designated in advance regardless of the usage status of the called terminal line. There is an unattended transfer to transfer to another terminal line that was made. In addition to this, there are many types of transfer under various conditions, but the operation of transferring an incoming call to another terminal line before the called terminal line responds is generically called incoming transfer.

As for the call transfer device, there are a system in which a small-scale device is individually provided in the terminal line and a system in which a large-scale device is provided inside the exchange (Japanese Patent Laid-Open Nos. 63-16775 and 63-63). 78651, JP-A-1-101769
Japanese Patent Laid-Open No. 2-142267, Japanese Patent Laid-Open No. 3-1
3046 gazette).

[0004]

In such a call transfer device, the caller usually calls the callee without knowing in advance that the call is to be transferred. If the calling party and the called party belong to the same extension telephone network, the line charge is usually free. However, if the called party designates a terminal line belonging to the public line network as the call transfer destination, the caller is notified of the call made to the called party belonging to the free extension telephone network. It is transferred to the terminal line belonging to the pay public line network without it. Even if the caller intends to make a call to the toll-free line, the call is transferred to the pay line to be charged, and it becomes difficult to manage the call charge depending on the intention of the caller.

In order to solve this problem, a method has been proposed in which the caller is notified in advance that the incoming call is transferred by using a signal sound different from the normal ringing sound and the information of the transfer destination (Japanese Patent Application Laid-Open No. 2000-242242). Japanese Patent Laid-Open No. 62-159962, Japanese Patent Laid-Open No.
-81551 gazette, Unexamined-Japanese-Patent No. 2-285761 reference).

However, these methods only notify the caller of the call transfer destination, and whether the transfer destination is charged or free is determined in a short time after the caller receives the information of the transfer destination. Moreover, the interruption of the transfer is extremely inconvenient because the caller has no choice but to quickly hook the handset of the telephone terminal device before the call transfer procedure is executed.

The present invention has been made against such a background, and notifies a caller that a call is forwarded to the caller before the call is forwarded. If the forwarding destination is a pay line, the caller is called. It is an object of the present invention to provide an exchange capable of performing a call transfer service that allows a person to decide whether or not to transfer a call.

[0008]

SUMMARY OF THE INVENTION The present invention comprises a main switch that accommodates a plurality of terminal lines and performs mutual switching connection, and a call control device that controls switching connection of the main switch. Is an exchange having a call transfer means and a storage device connected to the call control device and having a memory area for storing the call transfer registration information.

Here, a feature of the present invention is that the call forwarding destination registered for the terminal line is provided with a memory for pre-registering whether or not to regulate forwarding when the call forwarding destination goes through a pay line, The control device includes means for inquiring the memory when an incoming call transfer destination of an incoming call passes through a pay line, and means for prohibiting transfer for a terminal line for which transfer restriction is registered for the time being.

The call control device includes means for transmitting a signal tone indicating that the incoming call transfer destination is charged to the terminal line of the calling side for a call whose transfer is prohibited by the transfer prohibiting means. Is desirable.

The call control device sends a transfer execution permission request signal tone to the terminal line of the calling side for a call for which transfer is prohibited by the transfer inhibiting means for the time being, and means for responding to this permission request. Means for performing a transfer when a response signal indicating permission is received from the terminal line.

[0012]

[Function] The line user can set the transfer of the incoming call to his / her terminal line by the operation instruction. Further, when the transfer destination is via a pay line, it can be set so that whether or not to perform the transfer can be selected.

The regulation information when the incoming call is transferred to the pay line is registered in the incoming call transfer information memory of the exchange. When an incoming call from a terminal line that is registered as "restricted" in this incoming call forwarding information memory is forwarded, if the forwarding destination is a free line, the call is immediately forwarded, but the forwarding destination is a pay line. In case of, the transfer is not performed. Further, with respect to an incoming call from a terminal line registered as "no restriction", if the transfer destination is a pay line, the caller is permitted to transfer the call before the transfer is restricted.

As a result, the caller is notified that the call is forwarded before transfer, and if the transfer destination is a pay line, it is determined whether or not the caller will transfer the call. can do. Therefore, the call charge can be managed according to the will of the caller.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a block diagram of an apparatus according to the present invention.

The present invention comprises a main switch 8 for accommodating the terminal lines 1 to 3 and performing a switching connection with each other, and a call control device 9 for controlling a switching connection of the main switch 8. An exchange including a call transfer unit and a main storage device 10 connected to the call control device 9 and including a memory area for storing call transfer registration information.

Here, a feature of the present invention is that whether or not transfer restriction is to be registered in advance when an incoming call transfer destination registered corresponding to the terminal lines 1 to 3 passes through the station line 7 which is a pay line. Call transfer information memory 11
For the time being, the call control device 9 refers to the means for inquiring of the incoming call transfer information memory 11 when the incoming call transfer destination of the incoming call passes through the station line 7 and the terminal lines 1 to 3 for which transfer restrictions are registered. And means for prohibiting the transfer.

The call control device 9 sends a signal tone indicating that the incoming call transfer destination is charged to the calling terminal lines 1 to 3 for the call whose transfer is prohibited by the transfer prohibiting means. And a means for transmitting a transfer execution permission request signal tone to the caller side terminal lines 1 to 3 for a call for which transfer is prohibited for the time being, and permission from the terminal lines 1 to 3 for this permission request. Means for performing a transfer when a response signal indicating is received.

The transmission register trunk 4 includes terminal lines 1 to 1.
It receives a call from 3 or sends various control sounds to the terminal lines 1 to 3. The call signal trunk 5 includes terminal lines 1 to 3
A ringing tone is sent when a call is received. The corporate telephone network is a free line and is accommodated in the exchange by the relay line 6, and the public telephone network is a pay line and is accommodated in the exchange by the office line 7. The processing operation of the call control device 9 is executed by making full use of programs and data stored in the main storage device 10 in advance. The call transfer information memory 11 is the terminal line 1
The call transfer information can be registered or deleted by an operation from the telephone terminal device connected to any one of the above-mentioned items 3 to 3 or an operation from the input device by the maintenance person of the exchange. Main memory 1
The same applies to the call transfer registration information of 0.

Next, the operation of the embodiment of the present invention will be described with reference to FIG. FIG. 2 is a flow chart showing the operation of the embodiment of the present invention. Here, a call from the terminal line 1 to the terminal line 2 is transferred to another terminal line 3 which is a free line or the relay line 6 by the call transfer registration of the terminal line 2, or is transferred to the station line 7 which is a pay line. The case will be described. When the call control device 9 detects a call from the terminal line 1 (101), the terminal line 1 and the calling register trunk 4
And are connected, and a dial tone indicating completion of dial reception preparation is transmitted (102). Next, the dial code for calling the terminal line 2 to which the called terminal is connected is received (1
03).

The call control device 9 reads the data in the main storage device 10 and determines whether or not the terminal line 2 to which the called terminal is connected has registered the call forwarding (104). If the terminal line 2 does not register the call transfer, the call signal trunk 5 is connected to the terminal line 2 to call the called terminal (110). Here, it is assumed that the incoming call transfer is registered as an absent call transfer. Since the call is forwarded, regardless of whether the terminal line 2 is busy or not answering, the incoming call transfer procedure is started at the same time as the terminal line 2 is called.

It is determined whether the call charge to the call forwarding destination is pay or free (105). Here, if the call transfer destination of the terminal line 2 is a terminal of the corporate telephone network connected by the terminal line 3 or the relay line 6, the charge is free and the call transfer destination terminal line 3 or the relay line 6 is used. The terminal of the corporate telephone network is called through (109). If the call transfer destination of the terminal line 2 is a terminal of the public telephone network, the call charge is charged, and it is determined whether the call transfer is restricted or not according to the information in the call transfer information memory 11 (106). ).
The incoming call forwarding information in the incoming call forwarding memory 11 is the terminal lines 1 to 3
It is provided to correspond. If the content of the call transfer information corresponding to the terminal line 1 is stored so as to be restricted in the case of a pay line, it means that the user of the terminal line 1 does not want to talk to the pay party. The call control device 9 sends a restriction sound to the terminal line 1 to which the calling terminal is connected (111). As a result, the caller of the terminal line 1 is notified that the incoming call is restricted because it is transferred to the terminal of the station line 7.

However, if the content of the call transfer information corresponding to the terminal line 1 is stored so as not to be regulated in the case of paying, it is determined whether or not the call transfer destination is called at each call transfer. It is determined by the execution permission signal of the call transfer from the line 1. For this reason, the call control device 9 sends an execution permission request signal for incoming call transfer from the outgoing register trunk 4 to the terminal line 1 to which the calling terminal is connected as a special sound (107). Here, if the caller does not want to make a call with the paying party, he / she may hook the handset of the telephone terminal connected to the terminal line 1. However, if a call is to be made even if there is a charge, the caller sends out a dial code corresponding to the execution permission signal of the call transfer from the terminal line 1 and when the exchange receives the dial code (108), the call control device 9 The public telephone network terminal, which is the transfer destination, and the terminal line 1 are connected to the station line
Connect through. If the telephone terminal connected to the terminal line 1 does not perform a dial operation within a fixed time, a restriction sound is sent to the terminal line 1 (111) and the call transfer procedure is stopped.

[0024]

As described above, according to the present invention, when a call is transferred, the caller is notified that the call is transferred, and the transfer destination is a pay line. In this case, it is possible to decide whether or not to perform the transfer at the will of the calling party. Therefore, the call charge can be managed according to the will of the caller.

[Brief description of drawings]

FIG. 1 is a block configuration diagram of an apparatus according to an embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the embodiment of the present invention.

[Explanation of symbols]

 1-3 Terminal line 4 Outgoing register trunk 5 Ringing signal trunk 6 Relay line 7 Station line 8 Main switch 9 Call control device 10 Main storage device 11 Call transfer information memory

Claims (3)

[Claims] 1. A main switch for accommodating a plurality of terminal lines for mutual exchange connection, and a call control device for controlling exchange connection of the main switch, the call control device including a call transfer means, In a switch equipped with a storage device including a memory area for storing incoming call transfer registration information, which is connected to the call control device, whether or not to restrict transfer when the incoming call transfer destination registered for the terminal line passes through a pay line The call control device is provided with a memory for pre-registering a call, and the call control device refers to the memory when an incoming call transfer destination of an incoming call goes through a pay line and a terminal line for which transfer restriction is registered for the time being. And a means for prohibiting the exchange. 2. The call control device includes means for transmitting a signal tone indicating that a call is transferred to a terminal line on the calling side of a call for which transfer is prohibited by the means for prohibiting transfer, to the terminal line of the calling side. The exchange of claim 1 including. 3. The call control device, for a call for which transfer is prohibited by the transfer prohibiting means for the time being, sends a transfer execution permission request signal tone to a terminal line of the calling side, and the permission request. 3. The exchange according to claim 2, further comprising means for executing transfer when a response signal indicating permission is received from the terminal line.