KR100639854B1 - Interface method for electronic switching of FSK protocol - Google Patents

Abstract

The present invention relates to an interface method for processing the FSK protocol in an electronic switching system. An interface between an apparatus (FSKA board) and a PP (LSP or TLSP) for an FSK protocol required to perform a caller information display service is defined as TD-BUS. By making it possible to easily interoperate with the running flag of the DPRAM and the signal of the interrupt area, even if a new service is developed, the interface with the device for the FSK protocol can be easily developed.

Description

Interface method for electronic switching of FSK protocol in all electronic switch

1a and 1b show a processing procedure between an exchanger and an FSKA board according to the invention.

2A and 2B illustrate a channel MAP for communication in accordance with the present invention.

3 illustrates an FSK data area MAP in accordance with the present invention.

The present invention relates to an interface method for FSK protocol processing in an electronic switchgear, and more particularly, an apparatus (FSKA board) and a peripheral processor (PP: LSP or TLSP) for an FSK protocol required to perform a caller information display service. It is related to the interface method for FSK protocol processing in all electronic switchgear, which makes it easy to interwork the interface between the running flag (RUNNING FLAG) of DPRAM and the signal of interrupt area through TD-BUS.

Existing caller ID display service uses the DTMF to output only the calling party's telephone number, but this method uses a variety of information, that is, the name of the calling party or other information from other databases (stock information, weather information). There was a problem in that it could not be delivered to the user's various information needs because it could not be delivered.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, the interface between the device (FSKA board) and peripheral processor (PP: LSP or TLSP) for the FSK protocol required to perform the caller information display service The purpose of the present invention is to provide an FSK protocol processing apparatus and method in an all-electronic exchange that enables easy interworking with the running flag of the DPRAM and the signal of the interrupt area through the TD-BUS.

The present invention for achieving the above object is the first to periodically monitor the interrupt status of the FSKA board for the interface between the peripheral processor and the FSKA board to determine that the peripheral processor can read data from the FSKA board step; A second step of generating an interrupt indicating that the peripheral processor reads the data and writes the FSKA board if the data can be read from the DPRAM of the FSKA board as a result of the determination of the first step; A third step of determining that the FSKA board can store data in the DPRAM; And if the FSKA board is capable of storing data in the DPRAM as a result of the determination of the second step, storing the predetermined data in the DPRAM and generating an interrupt indicating that the peripheral processor can read. It features.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The caller information display service is a service for displaying the caller's telephone number and caller's name coming in before or during a call on the display terminal of the called service subscriber. In order to implement this, an interface between an apparatus for processing the FSK protocol and an apparatus for processing the FSK protocol through the TD-BUS is configured at the exchange.

Therefore, the present invention transmits a text to the caller's telephone number and the subscriber's name using the FSK protocol and displays it on the CPE terminal. In the future, the FSK signal may provide analog subscribers with various information services, such as stock information, weather information, and various search information.

The interface between the processor at the exchange to handle the caller ID service and the apparatus for processing the FSK protocol (hereinafter referred to as the FSKA board) is handled using TD-BUS and the MP (main processor) and PP (peripheral processor) at the exchange The interface between the two uses IPC, and the processing procedure is as shown in Figs. 1A and 1B.

As shown in FIG. 1A and FIG. 1B, when a caller information display request from the main processor MP to the peripheral processor PP is received during call processing, the peripheral processor PP converts to a predetermined FSK data message format through the TD-BUS. Data transfer to the FSKA board is made.

The main processor (MP: ASC, etc.) and the PP (LSP or TLSP) use the IPC used in the existing exchange, and the PP (LSP or TLSP) is the part where the interface function for the CID service is implemented. .

Peripheral processor (PP: LSP or TLSP) receives caller information display request using FSKDataWrtRQ for caller information display service and notifies FSKDataEndRP in response. The PP (LSP or TLSP) reads the status of the FSKA board periodically (8ms) for the interface with the FSKA board, determines that the PP can read data from the FSKA board, and reads and writes the received data. If an interrupt is generated, the FSK data is transmitted via the TD-BUS. Here, the functions of the procedure modules in the PP (TSP or TLSP) block will be briefly described as follows.

(1) Fsk_Sig_Read_Write: Periodic interface with device (FSKA board) for FSK protocol for CID (Calling Identity Delivery) service. Check interrupt area (0x800) and write data to write if read flag is HIGH and read_flag If is LOW, the detection mode is read.

Sending caller information through TD-BUS to FSKA (-N) board and detecting mode for sending caller information from FSKA board (notification of caller information transmission during call, notification of caller information transmission before starting call, TEST end notification, etc.) Follow the procedure to accept and notify the MP.

(2) Fsk_Read_signal: Receive the detection mode from the device for the FSK protocol (FSKA board), determine which detection mode is received in which channel among the 16 channels of the FSKA board, and execute Fsk_Receive_Proc.

(3) Fsk_Receive_Proc: Analyze the received data stored in fsk_sig_in_queue for each FSK channel and check the On-Hook Ring (when the called terminal is not busy) and On-Hook No Ring. However, if the ring signal is not output due to call forwarding, etc.) or Off-Hook (when the called terminal is busy), it performs the operation according to the called terminal status and notifies the result to MP. In case of off-hook, caller information display should transmit DTMF "D" ACK signal from CPE according to SAS and CAS tone transmission.

On the other hand, the interaction between the FSKA board and the peripheral processor (PP) is as follows.

Common memory of FSKA board provides 2Kbytes communication channel, communication channel can communicate bi-directionally, and PP (LSP or TLSP) and FSKA board communicate by hand-shake using running flag. It operates by interrupt method for stability.

2A and 2B show a channel map for communication for interfacing with a PP (LSP or TLSP) for explanation of the present invention. Interrupt method prevents each other's access from colliding and communicates with each other in communication between FSKA board and PP.

That is, when FSKA board and PP access the communication channel once, it reads all the new information sent by the other party since the previous access, sends all the new information that it needs to give and generates an interrupt to inform the other party that its access is over. Quit Access.

Figure 3 shows a Control & Information Area Map of the FSKA board for the caller information display for explanation of the present invention. Here, 0x000H address stores Running Flag and 0x001H address is not used, and 0x002H address indicates the number of pairs of CHs with current data during read / write, and 0x003H address does not use and 0x004H address to 0x07FH information address. Therefore, 0x004H and 0x005H are the address to save CH value and DATA. From 0x006H to 0x07FH, write area of FSK data to write and 0x080H ~ 0x0FFH is the detection mode read area from FSKA (-N) board to PP (LSP or TLSP).

The Running Flag prevents the access between FSKA-N and PP (LSP or TLSP) from colliding with each other and synchronizes each other's communication. However, Running Flag improves its accuracy by operating interrupt processing of the interrupt area.

Running Flag has one of two values and its meaning is as follows.

0xAA: PP (LSP or TLSP) indicates that access is over and the FSKA board can access the communication channel.

0x55: The FSKA board indicates that access is over and the PP (LSP or TLSP) can access the communication channel.

The information (s) is composed of one or more information having a variable size according to the type, the information and the information is connected without a space.

Type of information sent to PP (LSP or TLSP) by FSKA (-N) board is as follows.

0x02: Number of Information pairs

0x03: Not Used

0x04: CH number

0x05: Data

The CH number represents the FSK Channel Number and has a value from 0 to 15.

The GENERATION SIGNAL Information is used to designate a transmission signal for each CH. The PP (LSP or TLSP) shall send this to MLIB-B whenever the outgoing signal changes per CH. MLIB-B transmits a signal designated for each channel.

GENERATION SIGNAL Information values are as follows.

0x40: FSK signal during on-hook

0x50: CAS signal

0x60: SAS signal

0x70: FSK signal at off-hook

0x80: Loop Back Mode

And the type of information sent to PP (LSP or TLSP) by FSKA board is as follows.

0x02: Number of Information pairs

0x03: Not Used

0x04: CH number

0x05: Data

In addition, REPORT1 SIGNAL Information is used to report transmission completion by PP (LSP or TLSP) for each CH.

0x1E: FSK signal transmission completion at On-hook

0x2E: Send CAS signal

0x3E: Send SAS signal

0x4E: FSK signal transmission completion at off-hook

0x5E: Loop Back signal transmission completion

On the other hand, the interrupt processing operation is divided into the operation of the PP (LSP or TLSP) and the operation of the FSKA board.

When the PP (LSP or TLSP) is operated for the first time, it performs INITIAL and reads 0x7FFH area related to INT (R) when removing / mounting the FSKA board or power-on so that INT (R) becomes 'HIGH'.

PP (LSP or TLSP) operation checks interrupt signal of DPRAM 0x800H area (8ms) periodically and if INT (R) is recognized as "LOW", DUMMY READ 0x7FF area to convert INT (R) to "HIGH". And check RUNNING FLAG. For reference, the interrupt signal of DPRAM 0x800H area is managed by INT (R) and INT (L), and the INT (R) is switched when READ or WRITE is performed at 0x7FFH, and INT (L) is read from Ox7FEH. Or the state is switched when WRITE is performed. PP checks RUNNING FLAG after INT (R) becomes "HIGH" when INT (R) is "LOW".

If the RUNNING FLAG is "0x55", the PP reads the data written by the FSKA board, WRITE the DATA and the RUNNING FLAG in the FSKA mode, then writes the NULL DATA in the Ox7FEH area of the FSKA board to INT (L). Let this transition to "LOW". At this time, PP WRITE "0xAA" to RINNING FLAG.

The FSKA board checks INT (L), which is the interrupt signal of DPRAM periodically, and if INT (L) is recognized as "LOW", DUMMY READs the 0x7FE area to switch INT (L) to "HIGH" and then checks RUNNING FLAG. do.

If the RUNNING FLAG is "OxAA", the FSKA board reads the PP written WRITE data, WRITE the DATA and RUNNING FLAG with the FSKA board, then writes the NULL DATA in 0x7FF area and INT (R) is "LOW". Let's transition to.

On the other hand, when Time Out occurs between PP and FSKA board, Peripheral Processor (PP) sends a signal (FSKDataEndRP) indicating that caller information display function is abnormally terminated to the corresponding process requesting caller information display and IDLE information of corresponding CH of FSKA board. Make a ho.

In case of an error, the caller information display procedure distinguishes between On-hook and Off-hook. In Off-hook, the error of SAS tone and CAS tone and the ACK signal error of DTMF "D" coming from CPE are different. It notifies the MP so that it knows in which operation an error has occurred.

As described above, the present invention provides an interface between the apparatus for the FSK protocol (FSKA board) and PP (LSP or TLSP) and the RUNNING FLAG of the DPRAM through the TD-BUS, which is required to perform the caller information display service. It can be easily interlocked with a signal, and even when developing a new service, there is an effect that can be easily developed by using an interface with a device for the FSK protocol.

In addition, preferred embodiments of the present invention are disclosed for the purpose of illustration, those skilled in the art will be able to various modifications, changes, additions, etc. within the spirit and scope of the present invention, such modifications and modifications belong to the following claims You will have to look.

Claims (7)

Periodically monitoring the interrupt status of the FSKA board for interfacing the peripheral processor with the FSKA board to determine that the peripheral processor can read data from the FSKA board; A second step of generating an interrupt indicating that the peripheral processor reads the data and writes the FSKA board if the data can be read from the DPRAM of the FSKA board as a result of the determination of the first step; A third step of determining that the FSKA board can store data in the DPRAM; And if the FSKA board is capable of storing data in the DPRAM as a result of the determination of the second step, storing the predetermined data in the DPRAM and generating an interrupt indicating that the peripheral processor can read. Interface method for FSK protocol processing in an all-electronic exchange. The method of claim 1, The peripheral processor (PP) is Periodic interface with FSKA for FSK protocol for CID (Calling Identity Delivery) service. Check interrupt area (0x800 address), write data to write if write flag is HIGH and detect mode if read_flag is LOW A Fsk_Sig_Read_Write module that reads, transmits caller information through the TD-BUS to the FSKA board, and receives a detection mode for sending caller information from the FSKA board to notify the main processor (MP); An Fsk_Read_signal module which receives the detection mode from the FSKA board and determines which detection mode is received in which channel among the 16 channels of the FSKA board to perform Fsk_Receive_Proc; And The Fsk_Receive_Proc module is provided to analyze the detection mode based on the received data stored in the fsk_sig_in_queue, which stores the received data for each FSK channel, perform an operation corresponding to the detection mode, and notify the main processor (MP) of the result. Interface method for processing the FSK protocol in the electronic switch, characterized in that. The method of claim 2, The detection mode is an interface method for the FSK protocol processing in the all-electronic exchange, characterized in that the caller information transmission termination notification during the call, the caller information transmission termination notification before the start of the call, TEST end notification. The method of claim 2, If the second detection mode is Off-Hook, the caller information display receives the DTMF "D" ACK signal from the CPE according to the SAS and CAS tone transmission to send the caller information. Interface method. The method of claim 1, In the first step, the peripheral processor checks the RUNNING FLAG of the FSKA board when the interrupt is detected, and determines whether the data can be read. In the third step, when the interrupt is detected, the FSKA board checks the RUNNING FLAG to determine whether data can be stored. The peripheral processor changes the state of the RUNNING FLAG after reading the data so that the FSKA board can store data, and after the FSKA board stores the predetermined data, the peripheral processor changes the state of the RUNNING FLAG. Interface method for processing the FSK protocol in the electronic switch, characterized in that to read the data. delete delete

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