KR20000040080A - Apparatus and method for providing additional service - Google Patents

Abstract

PURPOSE: An apparatus and a method for providing an additional service are provided to simplify a structure of a bus by using an MVIP(Multi Vendor Integration Protocol) bus. CONSTITUTION: An apparatus for providing an additional service comprises a processor portion(10), a multitude of line interface portion(20,30), and a multitude of vocoder portion(40,50). The processor portion controls a whole system. The line interface portions converts input PCM(Pulse Code Modulation) data to ADPCM(Adaptive Differential Pulse Code Modulation) data or pre-stored ADPCM data to the PCM data. The vocoder portions converts the input PCM data to data adapted to internet or the data input from the internet to the PCM data.

Description

Apparatus and method for providing additional communication service

The present invention relates to an apparatus and method for providing an additional communication service, and more particularly, to a voice mail service (VMS) using a multi-vendor integration protocol (hereinafter referred to as MVIP) bus. Device for providing additional communication services such as FAX Mail Service (hereinafter referred to as FMS), Internet Phone, Internet Fax, and additional communication services such as Internet VMS and Internet FMS. And to a method.

In general, VMS is a service that stores a message in a voice mailbox for a subscriber's missed call or provides a guide service and a broadcasting service by using a voice mailbox, and FMS is a transmission / reception of a fax document, reading and receiving a message registered on a bulletin board. It is a service that provides a function to send a message received in its own mailbox to another mailbox subscriber.

1 is a block diagram showing a configuration of a conventional additional communication service providing apparatus.

Referring to FIG. 1, a conventional additional communication service providing apparatus includes an ADPCM (Adaptive Differential Pulse Code) and a processor unit 1, which is a main processor, which controls an entire system, and PCM (Pulse Code Modulation) data. A plurality of line interface units 2 and 3 for converting ADPCM data into PCM data with adaptive differential pulse code modulation) data, and converting the PCM data to G.723.1 and G.729 to be transmitted to the Internet network or vice versa. Internet Vocoder sections 4 and 5, which perform a function in a direction, connection of a T1 or E1 digital trunk, analog trunk connection, and R2-MFC (Multi Frequency Code). And a trunk processing unit 6 which processes a link access procedure on the D-Channel (LAPD) and a signaling method of SS7, and a plurality of PCM data input and output from the trunk processing unit. A switching unit 7 for switching to a line interface unit and the plurality of Internet vocoder units, and a storage unit 8 connected to the processor unit and a SCSI bus to store voice and data. .

Each unit is connected through a call message bus of the processor unit 1 and is operated by a control message of the processor unit 1. When an event occurs under the control of the processor unit 1, the respective unit is added. It will perform the function. In addition, the processor unit 1 may be connected to the storage unit 8 by the SCSI bus to read or write data of the storage unit. The data read from the storage unit 8 by the processor unit 1 is transmitted to the plurality of line interface units 2 and 3 and the plurality of Internet vocoder units 4 and 5 via the data bus. The processor unit 1 stores data input to the processor unit 1 from the interface units 2 and 3 and the plurality of Internet vocoder units 4 and 5 in the storage unit 8 via the SCSI bus. In this case, when the VMS or FMS function is performed, the data bus moves data stored or to be stored in the storage unit 8 and has a peripheral bus structure like the call message bus. In the highway bus, PCM data input and output to the trunk processing unit 6 is moved and has a serial bus structure. The plurality of Internet vocoder units 4 and 5 separately perform a fax relay function in order to perform the FMS function.

In the conventional supplementary communication service providing apparatus configured as described above, the VMS and the FMS providing method include the PCM data inputted to the trunk processing unit 6 through the T1 or E1 trunk from the GSTN (General Switched Telephone Network). The control unit is input to the switching unit 7 via the highway bus, and the switching unit 7 inputs the PCM data to the corresponding line interface unit. The line interface unit converts the input PCM data into 32 Kbps ADPCM data and transmits it to the processor unit 1 through the data bus under the control of the call message bus, and the processor unit 1 stores the ADPCM data in the storage unit 8 ). This function corresponds to the recording function of the VMS. In the method for transmitting voice or fax data to the GSTN, the processor unit 1 transmits ADPCM data stored in the storage unit 8 to the corresponding line interface unit through a data bus, and the corresponding line interface unit transmits the ADPCM data to the PCM. The data is converted into data and then transmitted to the switching unit 7. The switching unit 7 transmits PCM data input through the highway bus to the trunk processing unit 6, and the trunk processing unit 6 transmits the data to the GSTN through the T1 or E1 line. This function corresponds to the voice message transmission function of the VMS.

On the other hand, in the Internet phone service providing method, PCM data input from the GSTN through the T1 or E1 trunk is switched in the switching unit 7 and transmitted to the corresponding Internet vocoder unit through the highway bus under the control of the processor unit 1. The Internet vocoder unit converts the input PCM data into 8.0 Kbps, 5.3 Kbps, 6.3 Kbps by G.729 or G.723.1 coding, and then uses the internal 10 base-T according to the H.323 protocol. -T) Transmit to internet through port. The data of G.239 and G723.1 input from the Internet network are converted into PCM data through the corresponding Internet vocoder and then switched by the switching unit 7 and then through the T1 or E1 line of the trunk processing unit 8. Sent to GSTN

In the conventional additional communication service providing apparatus, each additional communication service providing method requires a switching operation to be performed separately when providing a VMS service or an Internet phone service, and is software-based due to a difference in coding schemes such as ADPCM or G.723.1 or G729. The size of data accessed through the data bus must be changed variably, and thus, when the VMS service and the Internet phone service are simultaneously implemented in one system, there is a problem that an overload occurs.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems of the prior art, and has a structure suitable for CTI (Computer Telephony Integrate) using an MVIP bus to provide various additional communication services in one system. It is to provide an additional communication service providing apparatus and method to support at the same time.

The present invention for achieving the above object is a processor unit for controlling the entire system, a plurality of line interface unit for converting the input PCM data into ADPCM data, and converts the pre-stored ADPCM data into PCM data, and the input And a plurality of Internet vocoder units for converting the PCM data into data suitable for the Internet network and converting the data input from the Internet network into the PCM data, wherein each unit is connected to and operated by an MVIP bus. An additional communication service providing apparatus is provided.

In addition, the present invention comprises the steps of transmitting the input data on the MVIP bus in the provision of the VMS service or FMS service, receiving the data on the MVIP bus, and converting the received data In the case of providing the Internet phone service or the Internet fax service, the method includes transmitting the input data to the corresponding line interface unit through the MVIP bus, and transmitting the transmitted data to the Internet network. In providing a service or an Internet FMS service, converting the input data into a High Level Data Link Control Procedure (HDLC) frame, and transmitting the HDLC frame to a processor unit. Extracting the input data from an HDLC frame. Provides additional communication service providing method, characterized in that formed.

Preferably, the step of receiving data on the MVIP bus may include a processor transmitting a call message to a line interface to receive data on the MVIP bus through a data bus, and transmitting the transmitted data to an internet network. If the transmitted data is fax data, the step of transmitting the data to the Internet without coding conversion and transmitting the HDLC frame to the processor unit is performed through a timeslot on the MVIP bus.

1 is a block diagram showing the configuration of a conventional additional communication service providing apparatus.

Figure 2 is a block diagram showing the configuration of the additional communication service providing apparatus according to the present invention.

3 is a diagram showing the structure of an MVIP bus in an additional communication service providing apparatus according to the present invention;

Explanation of symbols on the main parts of the drawings

10: processor unit 20: first line interface unit

30: n-th line interface unit 40: first Internet vocoder unit

50: n-th internet vocoder 60: trunk processing unit

70: storage unit

Hereinafter, the configuration and operation according to an embodiment of the present invention will be described with reference to the accompanying drawings.

2 is a block diagram showing the configuration of an additional communication service providing apparatus according to the present invention, and FIG. 3 is a view showing the structure of an MVIP bus of the additional communication service providing apparatus according to the present invention.

Referring to FIG. 2, the apparatus for providing an additional communication service according to the present invention includes a processor 10 for controlling an entire system, a plurality of input PCM data converted into ADPCM data, and a plurality of ADPCM data stored in advance. A line interface unit 20, 30, a plurality of Internet vocoder units 40, 50 for converting the input PCM data into data suitable for the Internet network and converting the data input from the Internet network into PCM data, and T1 or Trunk processing unit 60 for processing E1 digital trunk connection, analog trunk connection, R2-MFC, LAPD and SS7 signaling, and storage unit connected to the processor unit and SCSI bus to store voice and data And 70, each unit except the storage unit 70 is interconnected by an MVIP bus and a data bus, and is controlled by the processor unit 10. It is small. The data bus is a peripheral bus, which is a bus for transmitting data when an event occurs. In addition, a plurality of line interface units and a plurality of Internet vocoder units are provided with dual port RAMs, so that the plurality of line interface units and a plurality of local central processor units (CPUs) inside the plurality of Internet vocoder units are provided. The central processing unit is not affected by the processor unit 10.

Referring to FIG. 3, the MVIP bus structure includes a plurality of dsi and dso and a clock connected to the plurality of MVIP bus control boards 100 to 300.

The MVIP bus is a bus structure defined in H.110 and has a switching function and a clock-related function. The plurality of MVIP bus control boards 100 to 300 correspond to respective parts except for the storage unit 70. Accordingly, the processor unit 10, the plurality of line interface units 20 and 30, the plurality of internet vocoder units 40 and 50, and the trunk processing unit 60 may include a plurality of MVIP bus control boards 100 to 100. 300). In addition, the dsi and dso is a term referring to the highway bus by H.110, consisting of 32 64 Kbps timeslots. In FIG. 3, dsi and dso are 32 × 16 (dsi8 + dso8) = 512 timeslots when n is 8. And dsi and dso can be applied in both directions. This means that the channels on dsi and dso can be used for input to any MVIP bus control board or output from any MVIP bus control board. Here, the data format of the timeslots transmitted on the MVIP bus uses PCM and HDLC formats. Meanwhile, in order to use the MVIP bus, the plurality of MVIP bus control boards have an MVIP controller embedded therein, and the MVIP controller drives or receives a clock for driving the MVIP bus. The apparatus for providing an additional communication service according to the present invention is configured to be suitable for providing an existing VMS service, an FMS service, an Internet phone service, an Internet fax service, an Internet VMS service, and an Internet FMS service.

The operation of the additional communication service providing apparatus according to the present invention configured as described above is as follows.

First, in providing the VMS service or the FMS service, the PCM data input to the trunk processing unit 60 is transmitted using one of the time slots of dsi or dso of the MVIP bus, and the processor unit 10 transmits the data. The call message is transmitted through the data bus to the line interface that will receive the timeslot. The line interface unit receives a corresponding timeslot present on the MVIP bus, converts the time slot into an ADPCM, and transmits the ADPCM data to the processor unit 10 through the data bus. The processor unit 10 stores the ADPCM data. Store in On the other hand, in the case of transmitting voice or fax data, the reverse flow of the above process is performed.

In providing the Internet phone service or the Internet fax service, the PCM data input to the trunk processing unit 60 is transmitted to the Internet vocoder unit through the MVIP bus. If the PCM data is voice, the corresponding Internet vocoder converts the data into G.729 or G.723.1 data and transmits the data to the Internet network. On the other hand, voice or fax data input from the Internet goes through the reverse process of the flow of the above process.

On the other hand, in providing an Internet VMS service or an Internet FMS service, the approach is different from the method of providing a VMS service, an FMS service, an Internet phone service, or an Internet fax service. When the Internet VMS service or the Internet FMS service is to be used, the size of data stored and operated in the storage unit 70 depends on the service method and the coding method. In order to adapt to these various schemes, the present invention uses the HDLC format as the data format transmitted on the MVIP bus.

In providing the Internet VMS service, G.723.1 (5.3 Kbps or 6.3 Kbps) and G.729 (8.0 Kbps) data inputted to the corresponding Internet vocoder are converted into HDLC frames and are processed using the time slot of the MVIP bus. Transfer to section 10. The processor unit 10 extracts data from the HDLC frame present in the timeslot on the input MVIP bus and stores the data in the storage unit 70. On the other hand, in the case of transmitting the voice data, the process of the above process is reversed. The processor 10 reads the data from the storage unit 70 and converts the data into HDLC frames, and then MVIP bus. It transmits to the line interface unit through. The corresponding line interface unit transmits the HDLC frame to the Internet network.

In providing the Internet FMS service, the fax data input from the Internet is converted into HDLC frames by the line interface unit and transmitted to one time slot among the time slots of the MVIP bus, and the processor unit 10 transmits the MVIP one time. The data is received in the slot and stored in the storage unit 70. On the other hand, in the case of transmitting the fax data, the reverse flow of the above process is performed. Here, the PCM data input from the GSTN is coded through G.729 and G.723.1 in the corresponding Internet vocoder, and then converted into HDLC frames and stored in the storage unit 70 through the processor unit 10. A method of transmitting data input from the Internet network and stored in the storage unit 70 to the GSTN network through the corresponding Internet vocoder may be applied.

As described above, since the present invention uses an MVIP bus, the configuration of the bus can be simplified, and the number of boards for controlling a plurality of MVIP buses can be reduced, and it can be used not only with existing VMS and FMS services but also with Internet services. There is an effect that can be used.

In addition, since the present invention converts and uses various data sizes applied to each additional communication service into HDLC frames, the present invention can be easily integrated into a system.

Claims (5)

A processor unit for controlling the entire system, A plurality of line interface units for converting input PCM data into ADPCM data and converting prestored ADPCM data into PCM data; It includes a plurality of Internet vocoder unit for converting the input PCM data into data suitable for the Internet network, and converts the data input from the Internet network to PCM data, Each of the units is connected to each other by an MVIP bus, the additional communication service providing apparatus characterized in that the operation. In providing Internet phone service or Internet fax service, Transmitting the input data to a corresponding line interface unit through an MVIP bus; And transmitting the transmitted data to an internet network. The method of claim 2, wherein the transmitting of the transmitted data to the Internet network comprises transmitting the transmitted data to the Internet network without coding conversion when the transmitted data is fax data. In providing an Internet VMS service or an Internet FMS service, Converting the input data into HDLC frames; Transmitting the HDLC frame to a processor unit; And extracting the input data from the HDLC frame. The method of claim 4, wherein the transmitting of the HDLC frame to the processor unit comprises transmitting the HDLC frame through a timeslot on an MVIP bus.