KR0182691B1 - Call processing method in centrex/attendant console - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a call processing method in a centric / ethand console device suitable for processing call reception / outgoing in a centric / adherent console device connected to a DTS-1100A electronic switch. In the call processing of the Centrix / Attendant console device of the DTS-1100A switch, the call received in three forms according to each path can be properly processed to perform a function appropriate to each path.

Description

How to handle calls in the setx / attendant console device

1 is a block diagram illustrating an embodiment of a centric / adherent console device in accordance with the present invention.

2 is a block diagram illustrating an embodiment of a key input unit according to FIG. 1.

3 is a flow chart showing step by step an embodiment of a call processing method in a CENTRIX / Attendant console device according to the present invention.

* Explanation of symbols for main parts of the drawings

10: network termination device 12: U-line connection

50: terminal device 52: audio connection

54: ICC control unit 56: system control unit

58: storage 100: console

102: screen display unit 104: key input unit

106: decoder 108: buffer

The present invention relates to a call processing method in a CENTREX / ATTENDANT CONSOLE device, and more particularly, to a call reception in a CENTREX / ATTENTANT console device connected to a DTS-1100A (improved) electronic switch. A call processing method in a centric / attendant console device suitable for handling outgoing calls.

DTS-1100 Advanced Exchange is an international standard electronic switch that is used for local, local / Tandem and CENTREX of PSTN (Public Switched Telephone Network) and ultimately ISDN It has been developed to develop into a flexible exchange in various network types such as intelligent network (IN).

The DTS-1100 is an advanced system developed by applying the latest technologies in the fields of computer, semiconductor, communication, and software. It is suitable for all applications in terms of external size, performance, service flexibility, and adaptability to network environment.

The DTS-1100 advanced system is one of the existing and commercialized services such as voice (Local / Tandem), CENTREX, ISDN (2B + D, 30B + D), and common line signaling (CCS NO.7). It has been developed to play a major role in a comprehensive telecommunication network that can be accommodated by all systems.

The main design concept of the DTS-1100 retrofit is the open archi-tecture, which provides flexibility and modularity to make the system easy to expand and modify, and to easily improve the system as technology advances. ) Is adopted.

In other words, the system structure is designed to minimize the impact of technological development, and is designed in consideration of economics to provide advanced services to subscribers at a more economical price.

The main considerations in the design of the DTS-1100 advanced system are as follows.

* Simplify hardware by maximizing modularity

* Realization of economical efficiency by maximizing hardware usage efficiency

* Economic feasibility by maximizing software processing function

* Increased system configuration flexibility through subsystem combination

* Maximization of operation and maintenance by simplifying hardware

* High performance and high reliability

* Enhanced software implementation and maintenance

* Easy to add new features

The DTS-1100 retrofit is available in a variety of packages.

The DTS-1100 is a system that can accommodate up to 8,192 subscribers and 1080 channels of trunk lines, and has a distributed control concept that can handle 1,200 Erlang tracks and 150,000 Busy Hour Call Attempts (BHCH). The capacity is extended by 1500 lines.

The collection ratio may be 4: 1 or 8: 1.

Table 1 shows the main sources of the DTS-1100 Enhanced Exchanger.

Distributed control structure:

The DTS-1100 retrofit incorporates a redundant processor architecture with general purpose 32-bit and 16-bit microprocessors to increase modularity and improve reliability.

The control function is implemented in a control layer structure of two levels of the upper processor and the lower processor.

The upper processor, called the main processor (MP), performs higher functional tasks such as call processing, number translation, exchange control, multi frequency signal processing, system maintenance and operation, and the peripheral processor (PP). The subprocessor, called Peripheral Processor, performs tasks that require real-time processing of the lower layers, such as path detection, analysis, and line signal processing.

Function Distribution is performed by distributing various functions to the processors, and the PP and call processing processors adopt a load distribution method for easy addition as the system is expanded.

Operating system:

The operating system of the DTS-1100 enhanced system basically performs processor management by FIFO (First In First Out), and requires interrupt processing and real-time processing to perform urgent processing according to the case. The Real Time Clock is operated to perform the function.

In addition, interprocessor communication processing is performed, and control system redundancy processing is performed.

Programming language:

The DTS-1100 variant adopts C language for software programming, and Assemble language for hardware matching processing that requires real time.

Redundancy:

In order to increase system reliability, the main parts of the DTS-1100 retrofit, ie all control systems such as MP and PP, switches, network devices and signaling devices, are each doubled.

In this regard, the message queuing function in the Centrix / Etentant console device connected to the DTS-1100A electronic switch is a function in which the call is automatically transferred to the designated device after the call transfer is made. After receiving a certain message from the tendent console device, it informs the called party of the message waiting status and then notifies the waiting message upon request of the called party.

In addition, it performs the function of answering and receiving a message transferred to a Centrix / Attendant console device, delivering a received message on demand, and driving and releasing a message lamp of a subscriber telephone.

SUMMARY OF THE INVENTION An object of the present invention is to provide a call processing method in a centric / attendant console device which processes reception / outgoing call in a centric / attendant console device.

Hereinafter, with reference to the accompanying drawings an embodiment of the present invention for achieving the above object is as follows.

Referring to FIG. 1, FIG. 1 is a block diagram showing an embodiment of a CENTRIX / Attendant console device according to the present invention, and performs a U-line connection function with a preset electronic switch 200. FIG. 10, a terminal device 50 connected to the network termination device 10 to perform an audio connection function, an ISDN communication coordination function, and a system control function to the outside; and a user's key connected to the terminal device 50. And a console 100 that performs input and screen display functions.

Here, the network termination device 10 connects the U-line connecting portion 12 performing the U-line connecting function and the U-line connecting portion 12 and the electronic switch 200 in a 2B + D U-line manner. It comprises a Trans (T1).

In addition, the terminal device 50 is connected to the U-line connection unit 12 receives a digital voice signal input from the B channel of the ICC, converts it into an analog signal, and outputs it or receives an analog signal from the handset as a digital signal. It is connected to the audio connection part 52 which converts and outputs, the audio connection part 52, and the U-line connection part 12, is connected to the ICC control part 54 which controls IEC-Q, and the ICC control part 54, The system control unit 56 enables serial communication with a general terminal and a separate device, and the storage unit controlled by the system control unit 56 allows the system control unit 56 to maintain the setup contents of the device even when the power is turned off. Including 58.

The console 100 includes a screen display unit 102 for displaying a screen according to data from the system controller 56, and a key input unit 104 for key input to the system controller 56.

The present invention thus made will be described with reference to FIGS. 2 and 3 as follows.

First, Network Termination (NT) 10 performs a U-line connection function (ISC Echocancellation Circuit (IEC-Q)) with a preset DTS-1100A electronic switch 200, and a terminal device. Equipment (TE) 50 is connected to the network termination apparatus 10 to perform an audio connection function (ARCOFI-SP), an ISDN communication controller (ICC (ISDN Communication Controller)) and a system control function.

In addition, the console (Human Interface; HI) 100 is connected to the terminal device 50 to perform a key input and screen display function of the user, the electronic switchboard 200 is a Line Interface (LI) (ISDN subscriber) Board), Protocol Control (PC) and Service Control (SC).

Here, the U-line connection 12 in the network termination device 10 is composed of the ISDN subscriber access controller IEC-Q (PEB2091) and ICC (PEB2070), where the IEC-Q is a full duplex that satisfies CCITT I.430 A 2B1Q block coding scheme is used as the 2B + D U-interface transceiver, and the transformer T1 connects the U-line connector 12 and the electronic switch 200 in a 2B + D + U-line scheme.

Next, the audio connection unit (ARCOFI (Audio Ring Codec Filter With Speakerphone Function)) 52 in the terminal device 50 is composed of ARCOFI-SP (PEB2165), which is an Audio Ring Codec Filter (IC), U- Connected with the line connection unit 12, the digitalized audio signal input from the B channel of the ICC is applied to convert into an analog signal or the analog signal from the handset is converted into a digital signal and outputted. It is performed by DSP (Digital Signal Processing) technique and has a built-in tone generator to generate various tones (ring tone, busy tone, dial tone, DTMF tone).

In addition, an external microphone and a speaker may be provided at the audio connection unit 52 so that both the handset and the headset can be used to enable the speakerphone function.

In addition, the ICC control unit 54 is connected to the audio connection unit 52 and the U-line connection unit 12 to interface with the B / D channel control and the CPU 68302 to control the IEC-Q.

Next, the system control unit 56 is connected to the ICC control unit 54 and uses a 16-bit micro-controller as the main processor, and has a RS 232C port for device test and program development, and serial communication with a general terminal and a separate device. This made it possible.

In addition, a separate control unit 58 controlled by the system control unit 56, for example, the EEPROM is set up so that the system control unit 560 can maintain the setup contents of the device in addition to the program ROM and the data RAM even when power off. In order to maintain a separate storage unit 58, for example, the EEPROM to maintain the setup data, in addition to the data RAM, it can be installed to maintain the data at power off to install an optional backup battery.

In addition, the screen display unit 102 in the console 100 is configured using an LCD (Liquid Crystal Display) module. The LCD module includes an LCD panel, a driver, and a controller IC, so that external control signals and data of the system controller 56 may be used. Only enter and set the internal registers to display the desired screen on the LCD panel.

In addition, the key input unit 104 is composed of 45 keys as shown in FIG. 2, and the decoder 106 decodes an address A4-A2 and uses it as an input of a key scan. That is, the data input at the address input is used as a key scan output value to confirm the pressed key, and the buffer 108 temporarily stores the data D0-D7 according to the pressed key and outputs it.

The predetermined power supply unit (not shown) is configured to use both a commercial AC power supply (AC 110V-230V) and a DC -48V power supply from the exchanger, and replace only the power pack according to the use of the power supply. Can be used.

In this case, the network termination device 10 and the terminal device 50 may be configured on the main board.

Accordingly, the present invention is a call processing method for processing a call reception / outgoing call in a Centrix / Attendant console device of a DTS-1100A switch, and a received call is received in three types according to each path, and a function suitable for each path is used. This should be done accordingly.

Internal calls received within the Centrix Group or inside the Concierge, outside calls (Trunk) received outside the Centrix Group or outside the Concierge (national exchange), and calls that re-sent after a call transfer. The treatment should be divided into three types.

For this purpose, it is possible to design an appropriate message type and to perform each processing while sending and receiving messages with the system.

3 is a flowchart showing step by step an embodiment of a call processing method in a CENTRIX / Attendant console device according to the present invention.

First, in a case where a call is received from outside the Centrix group / guide, if the call is not answered, the lamp of the preset [TRK] key of the device repeats blinking at a predetermined period, for example, 0.5 second or 1 second period. The call reception status is displayed on the preset LCD panel.The call waiting number (CW) is displayed in the first place of the call waiting number up to three magnifications (300, 310, 320), and the [TRK] key is pressed to answer the call. When pressed, the lamp of the [TRK] key is fixed to light and a response state is displayed on the LCD panel to allow a call to be made (330, 340, 350).

At this time, when a new call request is received while the answer key [TRK] is not pressed, the number of counters increases so that the next call waits for answering after the first call ends.

Next, in the case where a call is received from inside the Centrix group / guide, if the call is not answered, the lamp of the preset [STA] key of the device repeats blinking at a predetermined period, for example, 0.5 second or 1 second period. The call reception status is displayed on the preset LCD panel.Up to three call waiting numbers are displayed in the second digit of the call waiting number (CW) (300, 310, 320), and the [STA] key is pressed to answer the call. When pressed, the lamp of the [STA] key is fixed to be lit and a response state is displayed on the LCD panel to make a call (330, 340, 350).

At this time, when a new call request is received while the answer key [STA] is not pressed, the number of counters is increased to allow the next call to wait after the first call ends.

In addition, when the incoming call is received according to the Centrix Group / Guide, if the call is not answered, the lamp of the preset [REC] key of the device is repeatedly flickered for a predetermined period, for example, 0.5 second or 1 second period. The call reception status is displayed on the preset LCD panel.Up to three call waiting numbers are displayed in the third digit of the call waiting number (CW) (300, 310, 320), and the [REC] key is pressed to answer the call. When pressed, the lamp of the [REC] key is fixed to light and a response is displayed on the LCD panel to allow a call to be made (330, 340, 350).

At this time, when a new call request is received while the answer key [REC] is not pressed, the number of counters is increased to allow the next call to wait after the first call ends.

In the Centrix Group / Guideline call handling process, there are two ways to call a subscriber from the device. One is to enter the number and press the [ACT] key to make a call request to the system. Press [ACT] key and press numbers one by one. The former number data is sent at once in 'SETUP' message, the latter number is sent in 'INFORMATION' message after 'SETUP' message.

In the Centrix Group / Guideline Call Forwarding process, if a call is successfully made by the system or the device side and the call is to be disconnected while the call is in progress, the call must be cut at the device side to successfully disconnect the call.

Even if the call is made by the call request on the system side, the call cannot be cut off on the system side, and only on the device side.

To disconnect a call, press the [DISC] key. At this time, the number of call waiting is checked. If the next call is waiting, the call is disconnected and the call is connected to the waiting call.

As described above, the present invention relates to a call processing method in a centric / attendant console device of a DTS-1100A switch, and suitably performs a function appropriate to each path for a call received in three forms according to each path. It can be handled.

Claims (3)

In a case where a call is received from outside the preset centric group / guide, if the call is not answered, the lamp of the preset [TRK] key of the device repeats blinking at a predetermined cycle and the call is received on the preset LCD panel. The status is displayed, which causes the call waiting number to be displayed in the first digit of the call waiting number (CW) (300, 310, 320). When the [TRK] key is pressed to answer the call, the lamp of the [TRK] key is fixed to ON and the LCD panel is displayed. Displaying (330, 340, 350) a call by displaying a response state on the call; In a case where a call is received from inside the Centrix group / guide, if the call is not answered, the lamp of the [STA] key of the device is repeatedly blinked at a predetermined cycle and the call is received on the preset LCD panel. The status of the call is displayed, and the call waiting number is displayed on the second digit of the call waiting number (CW) (300, 310, 320). When the [STA] key is pressed to answer the call, the lamp of the [STA] key is fixed to ON and the LCD is turned on. Displaying the response status on the panel to make a call (330, 340, 350); When the incoming call is received according to the Centrix Group / Guide, if the call is not answered, the lamp of the preset [REC] key of the device repeats the blinking at a predetermined period and the call is received on the preset LCD panel. To display the call waiting number on the third digit of the call waiting number (CW) (300,310,320) .If you press the [REC] key to answer the call, the lamp of the [REC] key is fixed to ON and the LCD panel is displayed. And (330, 340, 350) displaying the response status on the call so that the call can be made. 2. The call processing method of claim 1, wherein the predetermined period is 0.5 seconds or 1 second. The method according to claim 1, wherein the number of call waiting is displayed up to three.