JP2888234B2 - Malicious call recording 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 malicious call recording system in a digital electronic exchange.

[0002]

2. Description of the Related Art Conventionally, when a malicious call is recorded on a telephone or the like, recording is performed by manually activating a recorder attached to each telephone, or an automatic recording device attached to a digital electronic exchange is provided with a special number from the telephone. Automatic recording was performed by connecting to the call path by operation.

[0003]

However, in such a system in which a recording device is added to each telephone, the operation method differs for each type of recording device, and it is necessary to add a recording device for each telephone. There is also a problem that the functional efficiency of the telephone is reduced. On the other hand, in a system in which an automatic recording device is added to the digital electronic exchange and recording is performed by a special number operation from the telephone, only the called subscriber can hear the recorded content, and a third party other than the called subscriber can listen to the recorded contents. (For example, a maintenance person of a digital electronic exchange) could not hear the malicious call. SUMMARY OF THE INVENTION The present invention is intended to solve such a problem, and records a malicious call during a call, and allows a maintenance person of the digital electronic exchange to hear the malicious call as well as the called subscriber. The purpose is to provide a recording method.

[0004]

In order to achieve the above object, a malicious call recording method according to the present invention is provided by installing a memory means in a toll line trunk of a digital electronic exchange to control a called subscriber. Thus, the voice from the originating subscriber is recorded in the memory means as a digital signal. With this configuration, the present invention can easily record a malicious call.

[0005]

Next, one embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of the present invention. As shown in the figure,
The telephone 9 of the calling subscriber is connected to the telephone 1 of the called subscriber via the exchanges 2 and 8, which are digital electronic exchanges, the transit exchange 5, and the toll line trunks 3, 4, 6, and 7.

[0006] Further, the exchange 2 in which the called subscriber is accommodated.
Is connected to a maintenance management device 10 used by a maintenance person of the exchange.

Further, the toll line trunk 4 is an EEPR
RO for voice recording constituted by memory means such as OM
M4a is provided, and is configured so that voice during a call can be recorded as a digital signal by a special number operation (for example, hooking + input of a special number) from a called subscriber.

Next, the operation of the malicious call recording system shown in FIG. 1 will be described. When the calling subscriber dials the telephone 1 of the called subscriber using the telephone 9, a call can be made between the calling subscriber and the called subscriber.

That is, the exchange 8 accommodating the calling side subscriber, the transit exchange 5 and the exchange 2 accommodating the called side subscriber are respectively provided with the toll line trunks 3 and 3 provided therebetween.
A communication path (hereinafter, referred to as a malicious call communication path 12) is formed by being connected via 4, 6, and 7.

[0010] If this call is a malicious call, the called subscriber uses the telephone 1 to operate a special number (hooking +
By arbitrarily executing the special number, a malicious call can be recorded.

That is, the exchange 2 accommodating the receiving side subscriber who has received the special number operation transmits a command for instructing the toll line trunk 4 on which the voice recording ROM 4a is mounted to start recording. In the toll line trunk 4, upon receiving the recording start instruction, the malicious call channel 12 is received.
The voice transmitted via the voice recording is recorded in the voice recording ROM 4a as a digital signal over a predetermined time. The recording time is set in the exchange 2 in advance, and is transmitted together with a recording instruction.

Further, in the maintenance management device 10, the occurrence of a malicious call is notified from the exchange 2 via the malicious call communication channel 11, and the telephone number of the called subscriber who has performed the above-mentioned special number operation and the line number of the line used. You can check the trunk number.

Therefore, the administrator of the exchange can easily know the telephone number of the called subscriber who has received the malicious call and the trunk number used.

Further, a voice recording RO in which a malicious call is recorded is provided.
If the M4a is detached from the toll line trunk 4 and attached to the audio reproducing device 13, the reproduced malicious call 14 can be heard.

[0015]

As described above, according to the present invention, unlike the conventional method of adding a recorder to each telephone, it is not necessary to add a recorder for each telephone, so that the function efficiency of the telephone is reduced. And provide a malicious call recording service to many subscribers. Further, according to the present invention, since it is only necessary to attach a voice recording ROM to a toll line trunk, a low cost malicious call recording service can be provided as compared with a conventional automatic recording device.

[Brief description of the drawings]

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

[Explanation of symbols]

1 ... Telephone of the called subscriber, 2,8 ... Exchange, 3,4
6, 7 ... Toll line trunk, 4a ... Voice recording ROM,
5: relay exchange, 9: calling party's telephone set, 10: maintenance management device, 11: malicious call communication path, 12: malicious call communication path, 13: voice reproduction device, 14: malicious call.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) H04M 3/00 H04M 3/16-3/20 H04M 3/38-3/58 H04M 7/00-7 / 16 H04Q 1/54-1/56 H04Q 3/42 H04Q 3/58-3/62 H04Q 3/70-3/74

Claims (4)

(57) [Claims] 1. A memory means is provided in a toll line trunk of a digital electronic exchange, and voice from a calling party is recorded as a digital signal in said memory means under the control of a called party. Malicious call recording method. 2. The digital electronic exchange according to claim 1, further comprising a maintenance device, wherein a subscriber number of the called subscriber and a trunk number of a used line are controlled according to control of the called subscriber. Is notified to the maintenance management device. 3. The malicious call recording system according to claim 1, wherein said memory means is a ROM for voice recording. 4. The malicious call recording system according to claim 1, wherein the control of the called subscriber is performed by a special number operation.