KR19990059289A - Internet access system in the mail system - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mail system and an internet telephone gateway system. In particular, a line card for an internet telephone gateway is mounted in an existing mail system. The present invention relates to an internet access system in a mail system that directly links a system.

Conventionally, the mail system was operated in conjunction with a private exchange through a public telecommunication network. However, according to the present invention, a line card for an Internet telephone gateway is installed in an existing mail system to generate a control signal in the control logic under the control of the CPU module, thereby providing a highway. The interface module can monitor various data and messages, and at the same time interface the mail system and the Internet phone gate system in the DSP module, it is possible to provide a variety of additional services to the general subscriber.

Description

Internet access system in the mail system

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mail system and an internet telephone gateway system. In particular, a line card for an internet telephone gateway is mounted in an existing mail system. The present invention relates to an internet access system in a mail system that directly links a system.

As shown in FIG. 1, the conventional mail system is configured to operate the mail systems 13A and 13B by interworking with the private exchanges 12A and 12B through the public communication networks 11A and 11B. there was.

That is, when the subscriber requests a call, for example, when the subscriber A requests a call to the subscriber B through the public side A 11A, the corresponding party B through the corresponding public B network 11B. The call is provided to the subscriber of side B.

At this time, if the corresponding party B cannot use the other line because the subscriber B is using another line, the subscriber A can send the desired information to the party B mail system 13B through the private B exchange 12B. The message is stored, and at the same time, the B side private exchange 12B informs the B side subscriber of the arrival of the message through the B side public telecommunication network 11B.

Accordingly, the B-side subscriber can access the B-side private exchange 12B through the B-side public communication network 11B and check the message stored in the B-side mail system 13B.

However, the Internet telephone gateway system currently in use is relatively inexpensive than the public telecommunication networks 11A and 11B, and the mail system 13A and 13B cannot access the Internet telephone gateway system at all. Due to the structure, the expensive public telecommunication networks 11A and 11B were used.

In other words, in the related art, since the mail system was operated in conjunction with a private exchange through a public communication network, the subscriber had to use the mail system at a relatively high cost as compared to the Internet telephone gateway system.

In order to solve the problems as described above, the present invention is to install a line card for the Internet phone gateway in the existing mail system to directly link the mail system and the Internet phone gate system, thereby providing a variety of additional services to the general subscribers I want to be able to do that.

1 is a block diagram showing a configuration for operating a conventional mail system.

2 is a block diagram illustrating an Internet access system in a mail system according to an embodiment of the present invention.

3 is a block diagram showing the configuration of a line card in FIG. 2;

Explanation of symbols on the main parts of the drawings

21: public communication network 22: private exchange

23: Mail System 24: Luther

25: Internet network 30: Line card

31: CPU module 32: buffer

33: DSP module 34: highway interface module

35: RAM 36: control logic

37: monitoring module

In order to achieve the above object, the present invention provides a mail system, comprising: a line card for an internet telephone gateway for interworking an internet network with a mail system through Ethernet; The line card for the Internet telephony gateway includes a CPU module for controlling system-wide operations and performing external interface related operations; Control logic for receiving data from the mail system and generating a control signal and a control clock; RAM for temporarily storing data applied from the mail system; The input highway channel of the mail system is allocated as a monitoring channel or a data channel according to the control signal generated by the control logic to store recognition messages and data applied by the recording control of the CPU module, and a polling command of the CPU module. A highway interface module for outputting a message stored by; A DSP module for generating the recognition message by recognizing the DTMF tones carried on the data channel according to the control signal and the control clock generated by the control logic and interfacing data and messages between the mail system and the Internet network; A buffer for switching recognition messages and data generated by the DSP module according to the control of the CPU module; And a monitoring module for converting the data carried in the monitoring channel or the data channel into an analog signal according to the control clock generated by the control logic and transmitting the data to an external device using an earphone jack.

The present invention allows a mail system to be linked with the Internet through an Ethernet (Ethernet) using a line card for an Internet telephone gateway, which will be described below with reference to the accompanying drawings.

FIG. 2 is a block diagram showing an Internet access system in a mail system according to an embodiment of the present invention, and FIG. 3 is a block diagram showing the configuration of a line card in FIG.

In the mail system according to the embodiment of the present invention, as shown in FIG. 2, the public access network 21A, 21B, the private exchanges 22A, 22B, the mail systems 23A, 23B, and the router are shown in FIG. (Router; 25A, 25B) and the Internet network 25, the mail system 23A, 23B further includes line cards 30A, 30B for the Internet telephone gateway system.

Since the public communication networks 21A and 21B, the private exchanges 22A and 22B, the routers 25A and 25B, and the Internet network 25 are the same as in the conventional configuration, description thereof is omitted.

The mail system 23A, 23B delivers the call to the other party through the internet network 25 through the router 25A, 25B when the call of the subscriber calls, and the other party uses the line. If the client is busy, the message of the desired content is stored in the partner mail system 23A, 23B, and the subscriber provides the stored message when necessary.

The line cards 30A and 30B interface between the Internet network 25 and the mail systems 23A and 23B. As shown in FIG. 3, the CPU module 31 and the buffer are provided. And a 32, a DSP (Digital Signal Processor) module 33, a highway interface module 34, a RAM 35, a control logic 36, and a monitoring module 37. The DSP module 33 includes a memory 331, a DSP 332, and a RAM 333.

The CPU module 31 includes a timer, a serial input output (SIO), and a one-chip one chip direct access method (DAM) to control the overall operation of the line cards 30A and 30B for the existing Internet telephone gateway. It is responsible for main processing functions such as an external interface, and executes a polling command to read a message stored in the highway interface module 34 or to record data in the highway interface module 34 so as to record the DSP module. The message is exchanged between the 33 and the CPU module 31.

The buffer 32 stores recognition data applied from the DSP module 33 under the control of the CPU module 31 and outputs the recognition data to the highway interface module 34.

The DSP module 33 recognizes a DTMF tone on the data channel D_CH applied through the highway interface module 34, generates a recognition message, and applies the recognition message to the buffer 32. The mail system 23A According to the bus structure of 23B, data and messages are interfaced between the mail systems 23A and 23B and the Internet network 25.

The highway interface module 34 is composed of a switching mode and a message mode, and is executed by the mail system 23A or 23B by executing the corresponding switching mode according to the control signal CS applied from the control logic 36. Highway channels (RxHW, TxHW) are assigned to the monitoring module (M_CH) or data channel (D_CH) to the DSP module 33 and the monitoring module 37, the recognition message through the buffer 32 receives the corresponding message Invoke mode to save the acknowledgment message.

The RAM 35 temporarily stores data applied through the address bus and the data bus from the mail systems 23A and 23B, and then the DSP module 33 through the highway interface module 34 and the buffer 32. Send it out.

The control logic 36 is composed of address decode, interrupts, messages and control ports, and generates a signal for controlling the line cards 30A and 30B for the Internet telephone gateway.

The monitoring module 37 converts PCM data input and output from the line telephone lines 30A and 30B for the Internet telephone gateway into analog signals according to a control clock CC applied from the control logic 36 to use an earphone jack. Send to the outside.

In the mail system according to an embodiment of the present invention, the Internet access system performs the following operation.

First, referring to FIG. 2, the operation of interworking with the Internet network 25 through Ethernet using the line cards 30A and 30B for the Internet telephony gateway in the mail systems 23A and 23B will be described. When the side subscriber requests a call to the B side subscriber, the A side mail system 23A passes through the A side router 25A, the Internet network 25, and the B side router 25B through the Ethernet, and then the B side. The call will be provided to the subscriber.

At this time, when the B-side subscriber is using another line and cannot receive the call, the A-side subscriber sends a message of a desired content to the B-side mail system 23B via the Internet network 25. At the same time, the B side private exchange 22B notifies the B side subscriber of the arrival of the message through the B side public telecommunication network 21B.

Accordingly, the B-side subscriber can access the B-side private exchange 22B through the B-side public communication network 21B and check the message stored in the B-side mail system 23B.

In addition, the facsimile and ARS service can be performed by the same operation as described above.

Next, a line card 30A for an Internet telephone gateway, which is mounted in the mail systems 23A and 23B and interfaces between the Internet network 25 and the mail systems 23A and 23B, with reference to FIG. Look at the operation of 30B) as follows.

First, the CPU module 31 including the timer, the SIO, and the one-chip DAM controls the overall operation of the line cards 30A and 30B for the Internet telephony gateway, and performs main processing operations related to an external interface.

If the digital switching boards of the mail systems 23A and 23B apply the highway channels RxHW and TxHW to the line cards 30A and 30B for the Internet telephony gateway, the control logic 36 sends an address bus and data. DSP having a highway interface module 34, a memory 331, a DSP 332, and a RAM 333 configured as a switching mode and a message mode by receiving a data and a message through a bus to generate a control signal CS. It is applied to the module 33.

In addition, the highway interface module 34 executes the switching mode according to the control signal CS applied from the control logic 36 to input the highway channel input from the digital switching boards of the mail systems 23A and 23B. RxHW and TxHW are allocated to the DSP module 33 as the data channel D_CH, and the corresponding data channel D_CH and the monitoring channel M_CH are also assigned to the monitoring module 37 at the same time.

Accordingly, the DSP module 33 recognizes a DTMF tone carried on the data channel D_CH applied through the highway interface module 34, generates a recognition message, and applies the recognition message to the buffer 32. ) Stores the corresponding recognition message and outputs the recognition message to the highway interface module 34 under the control of the CPU module 31.

The highway interface module 34 receives the recognition message through the buffer 32 and executes the message mode to store the recognition message. In this case, the CPU module 31 designates a specific component and The message stored in the highway interface module 34 is read by a polling command instructing the part to transmit.

Accordingly, when the CPU module 31 wants to transmit a message to the DSP module 33, the CPU module 31 writes data to the highway interface module 34 to communicate with the DSP module 33. Since the exchange of messages between the CPU modules 31 is enabled, in the DSP module 33, between the mail systems 23A and 23B and the Internet network 25 in accordance with the bus structure of the mail systems 23A and 23B. Interfaces data and messages.

On the other hand, by generating a control clock (CC) in the control logic 36 to apply to the DSP module 33 and the monitoring module 37, the monitoring module 37 is applied to the control from the control logic 36 The PCM data is converted into an analog signal through the monitoring channel M_CH and data channel D_CH, which are inputted and outputted from the line cards 30A and 30B for the Internet telephony gateway according to the clock CC, and transmitted to the outside using an earphone jack. do.

In this way, it is possible to provide a variety of services using the Internet network relatively cheaper than the existing mail system and public communication network can satisfy the service to the subscriber.

As described above, according to the present invention, the line card for the Internet telephony gateway is mounted in the existing mail system to generate a control signal in the control logic according to the control of the CPU module, and monitor various data and messages in the monitoring module through the highway interface module. At the same time, it is possible to provide a variety of additional services to general subscribers by interfacing the mail system with the Internet phone gate system in the DSP module.

Claims (1)

In the mail system, A line card (30A, 30B) for internet telephony gateway for interworking the Internet network 25 and the mail systems 23A, 23B via Ethernet; The line cards 30A and 30B for the Internet telephony gateways include a CPU module 31 for controlling system-wide operation and performing external interface-related operations; Control logic (36) for receiving data from the mail systems (23A, 23B) to generate a control signal (CS) and a control clock (CC); RAM 35 for temporarily storing data applied from the mail systems 23A and 23B; According to the control signal CS generated by the control logic 36, the input highway channels RxHW and TxHW of the mail systems 23A and 23B are allocated to the monitoring channel M_CH or the data channel D_CH. A highway interface module 34 for storing the recognition message and data applied by the recording control of the module 31 and outputting the stored message by the polling command of the CPU module 31; Recognize the DTMF tones carried on the data channel D_CH according to the control signal CS and the control clock CC generated by the control logic 36 to generate the recognition message, and the mail system 23A and 23B. A DSP module 33 for interfacing data and messages between the Internet network 25; A buffer 32 for switching recognition messages and data generated by the DSP module 33 according to the control of the CPU module 31; The monitoring module 37 converts the data carried on the monitoring channel M_CH or the data channel D_CH into an analog signal according to the control clock CC generated by the control logic 36 and transmits the data to an external device using an earphone jack. Internet access system in the mail system, characterized in that consisting of.