KR100419151B1 - Apparatus of Offering Automatical Repeating Service in the PBX System - Google Patents

Abstract

The present invention relates to a PBX embedded automatic relay service apparatus, and more particularly, to a PBX embedded automatic relay service apparatus that provides various additional services using call switching by an automatic response in a PBX system.

The apparatus of the present invention includes a system matching unit for transmitting and receiving a message by connecting to the main processor of the PBX system; A main control unit which processes a message for call control, state management, or maintenance received through the system matching unit; A signal processor for detecting dual tone multi-frequency (DTMF) tones, various call progress tones, and fax call tones from PCM (Pulse Code Modulation) data input through the system matching unit; A fax processor for transmitting and receiving fax data by processing a fax signal applied through the system matching unit according to the control of the main controller; A data storage for storing data for voice guidance and the fax data; According to the control of the main control unit, the voice data applied through the system matching unit is processed and stored in the data storage unit, and comprises a voice processing unit for synthesizing the voice data of the data storage unit and sent out as a voice announcement.

Description

PBX embedded automatic relay service device {Apparatus of Offering Automatical Repeating Service in the PBX System}

The present invention relates to a PBX embedded automatic relay service apparatus, and more particularly, to a PBX embedded automatic relay service apparatus that provides various additional services using call switching by an automatic response in a PBX system.

In general, an automatic relay service may be performed by connecting an IVR system or a VMS (Voice Mail System) to the PBX system. A structure for performing the automatic relay service may be formed as shown in FIG. 1.

Here, the input / output relay line is interlocked with the PSTN (Public Switched Telephone Network), and the call entered as the representative number through the PBX system 11 is connected to the IVR system 12 or the VMS 13, and the corresponding IVR system ( You will hear the announcement of 12) and the automatic relay service is performed accordingly.

However, the PBX system 11 and the IVR system 12 / VMS 13 are connected to separate systems so that information necessary for call routing (that is, information such as outgoing line or subscriber status) is converted into a call. Since it is necessary to transmit / receive through other signaling paths, the configuration becomes complicated and a lot of connection time is required.

On the other hand, the IVR system 12 is a system that provides a service according to a subscriber's request after automatically answering an incoming call and accesses the call. The IVR system 12 analyzes the data input by the user and sends out an appropriate announcement. If necessary, request data from the host computer, and when the user hangs up the phone, receives a busy tone from the PBX system, and disconnects the telephone line from the user. 2, the relay line matching unit 12-1 in charge of the telephone line input / output, the signal processing unit 12-2 for processing the digital relay line signal, and the media providing the IVR service are illustrated. (Media) The switching processing unit 12-4 which connects the relay line matching unit 12-1 and the signal processing unit 12-2 or the media processing unit 12-3 to each other under control. ), And each phrase A main processor 12-5 for controlling the operation of the sex block, and a memory unit 12-6 for storing data necessary for the main processor 12-5 and storing data to be transmitted and received. consist of.

The operation of the IVR system 12 configured as described above is as follows.

First, the relay line matching unit 12-1 is in charge of input / output of a telephone line, and a digital relay line (ie, E1 or T1) and an analog relay line are connected to the main control processor 12-5. Accordingly, the digital processing line signal system is connected to the signal processing unit 12-2 through the switching processing unit 12-4, and the IVR service is connected by reconnecting to the media processing unit 12-3 at the beginning of the call path. To provide.

At this time, the signal processor 12-2 processes the R2 register signaling method and the common channel signaling (CCS) method, which is a CAS (Common Associated Signaling) method.

In the case of an analog subscriber, after the two-wire and four-wire conversion of the telephone line purification circuit, analog / digital conversion and TDM (Time Division Multiplex) conversion are performed, and then the media processing unit passes through the switching processor 12-4. (12-3). In general, the ring signal is processed by the relay line matching unit 12-1.

Accordingly, the subscriber connected to the media processing unit 12-3 hears the announcement under the control of the main processor 12-5, and transmits DTMF (Dual Tone Multi-frequency). Here, the announcement is sent from the memory unit 12-6 connected to the main processor 12-5.

At this time, the connection of the memory unit 12-6 is made of various protocols, that is, Small Computer System Interface (SCSI), and the like, and the detection of DTMF signals is performed by the media processing unit 12-3. It is made from a Pulse Code Modulation (PCM) signal that is input over a call.

A series of operations as described above are performed under the control of the main processor 12-5 to provide an IVR service.

Then, the conventional automatic relay processing operation will be briefly described with reference to the flowchart of FIG. 3.

First, the main control unit within the board for the automatic relay service receives a call reception through the system control unit and requests the voice processing request to the voice processing unit. The voice processing unit then prepares the tone processing to the signal processing unit and guides it. Send comments to the system control.

Then, when a DTMF tone is input through the system control unit, the signal processor receives and processes the DTMF tone and reports it to the main control unit.

Accordingly, the voice processor sends the announcement again, and the main controller requests the system controller to request a call transfer.

However, since the conventional PBX system and the IVR system or the VMS are connected to separate systems and need to transmit / receive information required for call routing through a signaling path other than a call path, there is a problem in that the configuration is complicated and a lot of connection time is required.

In addition, in the IVR system, there was no fax tone detection function in the signal processing device and the fax signal processing device could not be performed because there was no fax signal processing device, that is, voice and fax service by one representative number was impossible.

As described above, in order to provide additional services such as voice and fax using a conventional IVR system or a VMS as described above, a separate signal channel is required, and thus there is a problem in that configuration and processing procedures are complicated.

In order to solve the problems as described above, the present invention is to determine whether the subscriber registration, billing state required when the call transfer using the call transfer by the automatic response in the PBX system used as a switching device for providing a voice call The purpose of the present invention is to provide a variety of additional services, such as service restriction, voice guidance according to the called party's condition, and voice message delivery, quickly and conveniently.

1 is a block diagram showing a structure for performing a conventional automatic relay service (Service).

FIG. 2 is a block diagram illustrating an inter-active voice response (IVR) system in FIG. 1; FIG.

3 is a flowchart showing an automatic relay processing operation in FIG. 1;

4 is a block diagram showing a private branch exchange (PBX) built-in automatic relay service device according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

21: subject control section 22: data storage section

23: voice processing unit 24: signal processing unit

25: fax processing unit 26: system matching unit

In accordance with another aspect of the present invention, there is provided a PBX-embedded automatic relay service apparatus, including: a system matching unit configured to access a main processor of a PBX system and transmit and receive a message; A main control unit which processes a message for call control, state management, or maintenance received through the system matching unit; A signal processing unit for detecting DTMF tones, various call progress tones, and fax call tones from the PCM data input through the system matching unit; A fax processor for transmitting and receiving fax data by processing a fax signal applied through the system matching unit according to the control of the main controller; A data storage for storing data for voice guidance and the fax data; According to the control of the main control unit, the voice data applied through the system matching unit is processed and stored in the data storage unit, and comprises a voice processing unit for synthesizing the voice data of the data storage unit and sent out as a voice announcement.

The present invention provides a PBX embedded automatic relay service apparatus that processes various additional services, and allows the corresponding PBX embedded automatic relay service apparatus to perform fax service processing. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 4, the PBX-embedded automatic relay service apparatus according to an embodiment of the present invention includes a main control unit 21, a data storage unit 22, a voice processing unit 23, a signal processing unit 24, And a fax processing unit 25 and a system matching unit 26.

The main controller 21 includes a central processing unit (CPU), a program memory, and a data memory, and performs a function of controlling the entire board, and the system matching unit 26. It is responsible for handling messages for call control, status management or maintenance received from the system.

The data storage unit 22 is used for voice data storage and fax data storage for voice guidance, and can store a large amount of data using a dynamic random access memory (DRAM) or a flash memory. .

The voice processor 23 is a block that performs a voice coder function and may be processed using a digital signal processor (DSP) chip. That is, the main controller 21 receives a command of the main controller 21 and receives voice data from the data storage 22 to transmit a voice announcement by voice synthesis. Here, the output voice data is output through the system matching unit 26 in the form of PCM and delivered to the subscriber as a voice announcement.

The signal processing unit 24 includes various call progress tones and DTMF tones such as busy tone, ring back tone, and ringing tone in the PCM data input from the system matching unit 26. And a function of detecting a Fax Calling Tone.

The fax processing unit 25 is a block for processing a fax signal input from the system matching unit 26 and processes the fax protocol to perform fax data transmission and reception. Here, a fax modem chip may be used to process the fax signal.

The system matching unit 26 may be used using a dual port memory or the like as a buffer for transmitting and receiving messages between the main processor of the system and the main controller 21 in the board. It is in charge of input / output of PCM signal.

Referring to the operation of the PBX built-in automatic relay service apparatus according to an embodiment of the present invention.

First, in the related art, an automatic relay service apparatus having no device unit for processing a fax signal, and when a user is connected to the automatic relay service, listens to the announcement from the automatic relay service apparatus and uses the corresponding service. Without this, the call could be diverted from the auto-relay service device to the extension number entered by the user (typically using DTMF tones). However, if the corresponding input call was a facsimile device, there was no fax tone detection function and there was no device for fax signal processing.

Therefore, the present invention provides an automatic relay service device in a PBX to add a fax tone detection function to a signal processing unit and to add a fax processing unit to process a fax milling service. It will be able to handle all services.

First, the system matching unit 26, which is a passage connecting the main processor of the PBX system and the main controller 21 in the PBX-embedded automatic relay service apparatus of the present invention, has the main controller 21 and the call processing and board states. It transmits and receives data necessary for management and maintenance, and connects PCM highway to which time-divided PCM data of PBX system is connected. Here, the PCM highway provides a bandwidth of 2048 (Kbps) providing 32 time slots in units of 8 (KHz).

At this time, the data is inputted to the signal processing unit 24 through a signal from a relay line or an extension subscriber through the system matching unit 26 as a signal such as voice or fax to process a desired voice guidance and fax service or DTMF tone input. Done.

That is, the signal processor 24 detects whether the DTMF signal reception and the fax call tone for voice and fax service are received through the system matching unit 26 under the control of the main controller 21, thereby providing the user with the user. Find out what services you want.

In addition, the voice processor 23 reads the voice announcement from the data storage unit 22 and transmits the voice announcement to the subscriber through the system matching unit 26 under the control of the main controller 21, and if necessary, input voice. Record it and store it in the data storage unit 22. Here, the voice signal input through the PCM highway is stored as a PCM sample of 64 (Kbps), or when the stored voice signal is reproduced to perform voice guidance, the amount of data is too large. It is used and sent to subscriber in the compressed voice. In addition, as the voice compression, a voice coder having a compression rate of ADPCM (Adaptive Differential PCM) or lower is processed.

On the other hand, the fax processor 25 is connected to the G3 (Group 3) facsimile apparatus as a block for processing the fax signal received through the system matching section 26 in accordance with the fax call tone detected by the signal processor 24 It performs the facsimile protocol, that is, the facsimile data transmission / reception is performed by processing a modulation / demodulation and a facsimile image processing protocol and a facsimile transmission / reception protocol for a fax modem.

The above-described series of operations control the respective building blocks in the main controller 21 so that various additional services can be provided. In particular, the operations of the voice guidance and fax service are as follows.

First, when a call is input to the PBX system side, the main control unit 21 receives the call through the system matching unit 26, allocates a call to the automatic relay service device using a system data bus, and sends a announcement. Is applied to the voice processing unit 23. In this case, the main controller 21 prepares the signal processor 24 to detect an input DTMF tone or a fax call tone.

Accordingly, the voice processing unit 23 reads the voice announcements stored in the data storage unit 22 in response to the request to send the announcement of the main controller 21 to the subscriber through the system matching unit 26. Send it out.

Then, when the user is a selection signal (i.e., DTMF tone) or a fax device, the user inputs a fax call tone, so that the signal processor 24 receives the DTMF tone from the tone applied through the system matching unit 26. It detects whether or not a fax call tone is reported to the main control unit 21.

If the detected tone is a DTMF tone, the main controller 21 controls the voice processor 23 to send the announcement and to perform an automatic relay service for requesting a call transfer.

On the other hand, if the detected tone is a fax call tone, the main control unit 21 recognizes that the user is a fax device and reassigns an input call to the fax processing unit 24 to handle the fax data processing. That is, the fax processor 24 processes the fax signal received through the system matching unit 26 under the control of the main controller 21. A protocol for conversion / inverse conversion and fax image processing for a fax modem is performed. A protocol for transmitting and receiving a facsimile is processed and stored in the data storage 22.

In addition, if necessary, the fax processor 24 transmits the fax data stored in the data storage 22 to a designated fax machine and outputs the fax data (Fax Server). ) To be sent as a fax file for archiving or printing.

At this time, the fax server is connected to the PBX built-in automatic relay service apparatus according to an embodiment of the present invention capable of fax processing by TCP / IP (Transmission Control Protocol) / IP (Internet Protocol) to transmit and receive in the form of a fax file It is possible to conveniently send and receive faxes through the fax server.

As described above, various additional services can be provided quickly and conveniently by performing the PBX built-in automatic relay service function according to the present invention. In addition, by providing a storage function of the fax data by the present invention, additional services such as a fax mailbox function and fax data call forwarding are possible, so that functions such as indirect reception at other places can be used, and in conjunction with a fax server, the Internet (Internet Fax files can be sent and received via Intranet).

Claims (2)

A system matching unit for transmitting and receiving a message by accessing a main processor of the PBX system; A main control unit processing a message for call control, state management, and maintenance received through the system matching unit; A signal processing unit for detecting DTMF tones, various call progress tones, and fax call tones from the PCM data input through the system matching unit; A fax processor for transmitting and receiving fax data by processing a fax signal applied through the system matching unit according to the control of the main controller; A data storage for storing data for voice guidance and the fax data; PBX built-in type comprising a voice processing unit for processing the voice data applied through the system matching unit under the control of the main control unit, stored in the data storage unit, and synthesizes the voice data of the data storage unit and outputs the voice data as a voice announcement. Auto relay service device. delete