JPH0254660A - Telephone exchange - Google Patents

Abstract

PURPOSE:To make it unnecessary to provide recorders to all extension telephone sets by adopting the constitution such that a voice store and forward device storing the content of speech is accessible from all extension telephone sets. CONSTITUTION:When the content of speech is stored while extension telephone sets A, B are in talking, the extension telephone set A is hooked to hold the extension telephone set B and a hold tone V1 is sent to the telephone set B. The extension telephone set A dials a voice storage special number 1. When an idle area exists in the voice store and forward device 110, a CPU 106 uses a voice synthesizer 108 to synthesize the area number in voice and to send repetitively a message of 'the call is reserved at so-and-so number' and connects the extension telephone set A to the voice store and forward device 110. On the other hand, the extension telephone set applies hooking again to restart the speech with the extension telephone set B and the voice is stored in the reserved area of the voice forward and store device 110.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a telephone exchange, and more particularly to a telephone exchange equipped with an audio storage device for storing audio of the contents of a call.

[Conventional technology]

In conventional telephone exchanges of this type, audio recordings of telephone calls are recorded using recording devices prepared in advance for each of the connected telephones. Furthermore, voice storage devices used for voice storage were used only for storing and transmitting messages.

[Problem to be solved by the invention]

In the conventional telephone exchange mentioned above, the recording device that records the audio content of calls must be prepared for each telephone, which is expensive, and if a memo is used without a recording device, there is a risk of mishearing or mistakes. There was a problem with having to listen again.

The present invention was made in view of these circumstances, and
To provide a telephone exchange capable of accurately knowing the contents of a call without omission without providing a recording device for each of a plurality of extension telephones connected to the telephone exchange.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a telephone exchange that is connected to a plurality of extension telephones via telephone lines and controls the connection of these telephone lines, and that transmits audio indicating the content of calls made between extension telephones. During a call between the voice storage device to be stored and an extension telephone, the voice storage device is accessed and the contents of the call are stored in a predetermined area of the voice storage device based on a voice storage request special number issued from one extension telephone. It is also characterized by having a control means for taking out a message from a predetermined area of the voice storage device when a special number and a message number to be taken out are specified for taking out a message from an extension telephone.

According to the present invention, there is no need to provide a recording device for each of a plurality of extension telephones connected to a telephone exchange.
Costs can be reduced and the content of the call can be accurately known.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the configuration of an embodiment of a telephone exchange according to the present invention. In the figure, the telephone exchange includes a line interface 100 that interfaces extension telephones A, B, . , a CPU interface 104 that interfaces between the exchange switch 102, the line interface 100, the exchange switch 102, and the CPU 106;
106, a voice synthesizer (VH2) 108, a voice storage device (VMM) 110, and a tone circuit 112.

FIG. 2 is a state transition diagram during operation of the embodiment of the present invention shown in FIG. With reference to Figures 1 and 2,
A case where extension telephones A and B record the contents of the call during a call will be described. First, by performing a hooking operation on extension telephone A, extension telephone B is placed on hold.
Hold tone V1 is sent to telephone B. Extension telephone A
Then, listen to dial tone DT and dial voice storage special number 1.

At this time, the CPU 106 determines that this is an audio storage request, and searches for an empty area in the audio storage device 110.

If there is an empty area in the audio storage device 110:
The CPU 106 sends the area number to the speech synthesizer 108.
For example, if the vacant area is number x, the message "Reserved for number x" is repeatedly sent to the extension telephone, and the voice storage device 110 is sent to extension telephone A. Connect.

On the other hand, when the extension telephone A side is able to confirm the area number of the vacant area of the voice storage device 110, by performing the hooking operation again, the call with the extension telephone B side is resumed, and the voice storage device 110 The audio will be stored in the reserved area.

On the other hand, when extension telephone B goes on-hook, the CPU 106
repeatedly sends the voice stored in the reserved area of the voice storage device 110 to the extension telephone A, and ends its operation when the extension telephone A goes on-hook.

Furthermore, if there is no free area in the audio storage device 110, C
The PU 106 sends a message v2 to the extension telephone A via the speech synthesizer 108 saying "reservation not possible" and resumes the conversation with the extension telephone B.

Next, the case of retrieving messages stored in the voice storage device 110 will be explained using FIGS. 1 and 3. It is assumed that the message is retrieved using the extension telephone @C.

First, the user takes the extension telephone C off-hook and dials the message retrieval special number 2 followed by the area number of the voice storage device 110 in which the message is stored. By this operation, the CPU 106 determines that a message is to be retrieved, and then receives the area number and searches for the area of the audio storage device 110 specified by the area number. If a message is accumulated in the corresponding area, the CPU 106 repeatedly sends the message to the extension telephone C, and ends the operation when the extension telephone C turns on.

Further, if there is no message in the corresponding area of the voice storage device 110, the CPU 106 sends a message v3 saying "There is no corresponding message" to the extension telephone C.

〔Effect of the invention〕

As explained above, in the present invention, by configuring the voice storage device that stores the contents of calls so that it can be accessed from all extension telephones, there is no need to prepare a recording device for each extension telephone, thereby reducing costs. It becomes possible to save.

Furthermore, since voice can be stored during a call, it can be used in place of a message memo, and by accessing the contents of the message to the voice storage device, it is possible to prevent omissions or errors in message contents.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of a telephone exchange according to the present invention, FIG. 2 is a state transition diagram during a recording operation of the telephone exchange shown in FIG. 1, and FIG. FIG. 6 is a state transition diagram during a message retrieval operation. 10...Telephone exchange, 100...Line interface (LIF)
)102...Replacement switch (SW), 112.
...Tone circuit, 104...CPU interface (CIF)
106...cpu. 108...Speech synthesis device (VR3), 110.
...Voice storage device (VMM), A, B, C...
・・・Extension telephone, PBR・・・PB receiver. Applicant NEC Corporation Representative Patent Attorney Umeo Yamauchi

Claims (1)

[Scope of Claims] In a telephone exchange that is connected to a plurality of extension telephones via telephone lines and controls connection of these telephone lines, a voice storage device that stores sounds indicating the content of calls made between the extension telephones. and, during a call between the extension telephones, based on a voice storage request special number issued from one of the extension telephones, the voice storage device is accessed and the contents of the call are stored in a predetermined area of the voice storage device; 1. A telephone exchange characterized by comprising: control means for retrieving a corresponding message from a predetermined area of a voice storage device when a message retrieval special number and a message number to be retrieved are designated by a telephone.