KR100606361B1 - Apparatus and method for optimizing of caller identification display in key phone system - Google Patents

Abstract

The present invention is to provide an optimized caller information display device and method of the key phone system, MPB performing the main function of the key phone system; An LCO unit installed in the MPB and configured to receive a CID signal from the switching center by connecting to the switching center; A CSLIB unit installed in the MPB to control a CID signal level by connecting a CID telephone; A DTIB unit installed in the MPB and configured to connect with the digital telephone; An RS-232C installed in the MPB and connected to a PC; A memory installed in the MPB and having a FSK level table and a CAS level table, including a memory storing CID information to perform optimized caller information display, thereby enabling CID for each CID capable telephone in the keyphone system and the PBX system. By adjusting the frequency level flexibly, it is possible to accurately receive the CID signal and data even in the surrounding noise environment, poor track environment, and long distance installation conditions, thereby forming an optimal CID data reception condition.

Description

Apparatus and method for optimizing of caller identification display in key phone system}

1 is a block diagram of a caller information display apparatus of a conventional key phone system;

2 is a flowchart illustrating a caller information display method of a conventional key phone system;

3 is a block diagram of an optimized caller information display device of a key phone system according to the present invention;

4 is a flowchart illustrating an optimized caller information display method of a key phone system according to the present invention;

5 is a table showing an example of the configuration of the FSK level and CAS tone level for each terminal used in the present invention.

Explanation of symbols on the main parts of the drawings

20: digital telephone 30: CID telephone

31: regular telephone 40: key phone system

41: MPB 42: LCO part

43: CSLIB section 44: DTIB section

45: RS-232C 46: memory

47: FSK level table 48: CAS level table

51: PC 52: Printer

The present invention relates to an optimized caller identification display (CID) device of a keyphone system and a method thereof, and more particularly to a CID frequency (CAS) for each CID capable telephone in a keyphone system and a private branch exchange (PBX) system. Flexible control of customer premise equipment alerting signal (FSK) and frequency shift keying (FSK) signals ensures accurate reception of CID signals and data even in ambient noise, poor track conditions and long distance installations The present invention relates to an optimized caller information display apparatus and method for a keyphone system suitable for forming an optimal CID data reception condition.

In general, a key phone system is an efficient simple exchange system designed to be used by several people at the same time by installing a limited trunk line in the key phone main unit and connecting a key phone and a regular phone. Such a key phone system may be connected to a trunk line and an extension to perform a voice guidance function, an interrupt function, a broadcast function, a reception rejection function, a remote maintenance function, and the like.

In addition, the Caller Identification Display (CID) function is a function that displays the information of the calling caller (phone number, time of call, etc.) on the LCD (Liquid Crystal Display). You can save and search the information, and you can make one-touch calls after searching in the standby mode.

1 is a block diagram of a caller information display apparatus of a conventional key phone system.

As shown here, reference numeral 10 denotes a back plane of a keyphone system such as a private exchange (PX) or a private automatic branch exchange (PBX) or a private automatic branch exchange (PABX) that performs an exchange function, 20 is a digital telephone connected to the keyphone system backplane 10 and 30 is a CID generic telephone connected to the keyphone system backplane 10.

In addition, reference numeral 11 in the keyphone system backplane 10 is a power supply unit for supplying power to the keyphone system backplane 10, 12 to 15 are boards for performing various functions in the keyphone system 10, 16 is the CSLIB (Caller Identification Display Single Line Interface Board) board is connected to the CID general telephone (30) to transmit the CID data to transmit subscriber information, 17 is connected to the key phone system backplane 10 and the digital telephone (20) A digital key board for performing a digital line interface, 18 is a main processor board (MPB) for controlling the operation of the key system 10.

Thus, the conventional key phone and the PBX system perform each function by allowing each board to be plugged in the key phone system backplane 10.

2 is a flowchart illustrating a caller information display method of a conventional key phone system.

As shown in this figure, the MPB 18 is installed in the system, the CSLIB board 16 is installed, the CID desk phone 30 is connected, and then a call is received from the outside and another call is made while in a call. Determining whether CID type II can be performed by the CID telephone (30) (ST1 to ST5); Displaying CID data normally during a call, if CID type II can be performed in the CID telephone (30); If CID type II is not executable in the CID telephone 30, step ST7 of not displaying CID data is performed.

Here, the CID type I refers to receiving the CID in the idle state, and the CID type II refers to receiving the CID data in the busy state.

Referring to the operation of the prior art in detail as follows.

1) The MPB 18 is installed in the system (ST1).

2) The power supply unit 11 for supplying power to the system is installed.

3) A digital key board 17, which is a digital subscriber interface board, is installed in the system.

4) The digital telephone board 17, which is a digital subscriber interface board, and the digital telephone 20 are connected to 330m with two wires.

5) The main power of the key phone system backplane 10 is supplied from the power supply unit 11.

6) The user of the digital telephone 20 makes a phone call to another extension subscriber or an external subscriber.

7) The CID general telephone 30 supporting the CID function connected to the CSLIB board 16 sends CID data to the telephone when a telephone is called.

8) If the CID type II function, which means receiving CID data while on a call, is not supported, CID data will not be displayed.

However, this conventional technology has the following problems.

First, there was a problem that the CID reception rate is significantly reduced in the ambient noise or poor track environment.

Second, in the case of long distance installers, they often failed when receiving more CID data depending on the surrounding environment.

Third, in the case of Southeast Asian imported phones or CID early domestic development models, there were many problems that the reception of CID data was not properly performed.

Accordingly, the present invention has been proposed to solve the above-mentioned conventional problems, and an object of the present invention is to enable flexible adjustment of the level of the CID frequency for each CID capable telephone in the keyphone system and the PBX system. The present invention provides an optimized caller information display device and method for a keyphone system that can accurately receive CID signals and data even in a noisy environment, poor track environment, and long distance installation conditions, thereby forming an optimal CID data reception condition.

In order to achieve the above object, the optimized caller information display apparatus of the key phone system according to an embodiment of the present invention,

An MPB performing a main function of the key phone system; An LCO unit installed in the MPB and configured to receive a CID signal from the switching center by connecting to the switching center; A CSLIB unit installed in the MPB to control a CID signal level by connecting a CID telephone; A DTIB unit installed in the MPB and configured to connect with the digital telephone; An RS-232C installed in the MPB and connected to a PC; Technical features of the present invention include a memory installed in the MPB and having a FSK level table and a CAS level table to store CID information to perform optimized caller information display.

In order to achieve the above object, the optimized caller information display method of the key phone system according to an embodiment of the present invention,

A tenth step of determining whether CID type II can be performed on the CID landline by installing an MPB in the system, installing a CSLIB board, connecting a CID landline, and then receiving another call while the call is received from outside. Steps; In the tenth step, if the CID type II can be performed in the CID general telephone, the technical configuration includes a twenty step of detecting the CAS tone and the FSK data and displaying the CID data.

Hereinafter, an exemplary embodiment according to the present invention as described above, an optimized caller information display device of a key phone system and a method thereof will be described with reference to the accompanying drawings.

3 is a block diagram of an optimized caller information display device of the key phone system according to the present invention.

As shown therein, the MPB 41 performs the main function of the key phone system 40; A loop central office interface board (LCO) unit 42 installed in the MPB 41 to receive a CID signal from the switching center by connecting to the switching center; A CSLIB unit 43 installed in the MPB 41 for controlling the CID signal level by connecting the CID telephone 30; A DTIB unit 44 installed in the MPB 41 and performing connection with the digital telephone 20; An RS-232C (45) installed in the MPB (41) and performing connection with the PC (51); And a memory 46 installed in the MPB 41 and having a FSK level table 47 and a CAS level table 48 to store CID information so that optimized caller information display is performed.

In the above, the optimized caller information display device of the key phone system is connected to the DTIB unit 44 of the key phone system 40, and receives and displays the CID information from the external line and other stations through the trunk line. Wow; A CID telephone (30) connected to the CSLIB unit (43) of the key phone system (40) and supporting a call function and supporting a CID function; It is further configured to include a personal computer (PC) 51 connected to the RS-232C 45 of the key phone system 40 to adjust the CID signal level.

Here, reference numeral 31 denotes a general telephone connected to the CSLIB unit 43, and 52 denotes a printer connected to the MPB 41 of the key phone system 40.

In addition, the MPB 41 of the key phone system 40 may be connected to a local area network (LAN), which may be formed of 10 / 100M Ethernet.

In addition, the extension 100 is set as the digital telephone 20 connected to the DTIB unit 44, the extensions 101 to 103 are set as the CID telephone 30 connected to the CSLIB unit 43, and the extension 104 is the CSLIB unit 43. ) Shows an example of setting to a general telephone (31) connected to.

4 is a flowchart illustrating an optimized caller information display method of a key phone system according to the present invention.

As shown in this, install the MPB (18) in the system, install the CSLIB board 16, connect the CID telephone (30), then if the call from the outside and another call comes in the call A tenth step (ST11 to ST15) for determining whether CID type II can be performed in the CID land telephone (30); In the tenth step, if the CID type II can be performed in the CID general telephone 30, the CID type phone 30 includes detecting the CAS tone and the FSK data to display the CID data (ST21 to ST26).

The twenty-first step may include: a twenty-first step (ST21) of determining whether a CAS tone is detected if the CID type II can be performed in the CID telephone; A twenty-second step (ST22) if the CAS tone is not detected, increasing the CAS level (for example, increasing by 1 dB) and returning to the tenth step of waiting for another call when the call is busy; A twenty-third step (ST23) in which the phone sends out a predetermined tone (for example, a 'D' tone) when the CAS tone is detected to indicate that the CAS tone is detected; A twenty-fourth step of determining whether FSK data is detected after the twenty-third step (ST24); A twenty-fifth step (ST25) if the FSK data is not detected, increasing the FSK level (for example, by 1 dB) and returning to the tenth step of waiting for another call when in a call; If the FSK data is detected, a 26 th step (ST26) of displaying CID data normally during a call is performed.

The operation of the optimized caller information display device and method of the key phone system according to the present invention configured as described above will be described in detail with reference to the accompanying drawings.

First of all, the present invention is to enable flexible adjustment of the level of CID frequency for each CID capable telephone in the keyphone system and the PBX system.

The key phone system 40 thus has the structure of a basic exchange system, including a power supply and a ring generator.

In the key phone system 40, the LCO unit 42 is a line connected from the switching center, and can receive a tone and a CID signal for the basic call from the switching center.

The CSLIB unit 43 may connect the CID telephone 30 or the general telephone 31 supporting the CID function, and control the CID signal level of each telephone connected thereto.

The DTIB unit 44 may connect and use the digital telephone 20.

The memory unit 46 includes the FSK level table 47 and the CAS level table 48 for each gain, and then controls each gain by a user program.

The digital telephone 20 is a digital key phone telephone dedicated to the system and may receive CID information from an external line through a trunk line or receive CID information from another extension and display the same.

The CID phone 30 supports basic calls and the like, and the phone supporting the CID function may display information such as a user's telephone number and name.

The ordinary telephone 31 should be able to display the CID.

The PC 51 makes it easy to adjust the CID signal level through a user program.

The printer 52 makes it possible to output the content processed in the key phone system 40.

Referring to the operation of the present invention in more detail as follows.

5 is a table showing an example of the configuration of the FSK level and CAS tone level for each terminal used in the present invention.

For example, assuming that a call is made from the cellular phone 010-1234-1234 to the internal trunk line 031-450-4000, the operation will be described as follows.

First, the external exchange sends a ring signal to the key phone system 40 on the internal trunk line.

At this time, the exchange shall send CIN information between the first ring signal and the second ring signal to the internal trunk line.

Then, the CID detection chip of the LCO unit 42 detects valid CID data.

The CPU in the MPB 41 (not shown in the drawing) reads the CID data detected by the LCO unit 42 by the high-level data link control (HDLC) method, and stores the internal memory unit 46. ).

In addition, the MPB 41 transmits data stored in the internal memory 46 to each station (the digital telephone 20, the CID telephone 30 or the general telephone 31 capable of supporting the CID).

Since the digital telephone 20 transmits digital data through the DTIB unit 44, there is no particular problem.

The CID supportable CID telephone 30 or the general telephone 31 transmits an analog signal as an FSK signal through the CSLIB unit 43.

On the other hand, there are telephones that support many kinds of CID functions, including imported ones, and the line wiring of each building varies widely, and in some cases, there may be noisy lines.

Accordingly, the CSLIB unit 43 collects CID information according to CID type I (receive CID in the idle state) and CID type II (receive CID data during a call) in some cases, and sends a CAS signal to a general telephone that supports the CID function. When the FSK signal is transmitted through the analog line, the signal level can be flexibly changed so that the user can receive 100% CID information under optimized conditions.

Once again described sequentially as follows.

1) The initial setting value is -13dB as specified in each communication specification. When system power is turned on to internal registers (Lev_L, Lev_H) of codec chip of CSLIB unit 43, write "AC" and "1C". do. In the example of FIG. 5, since the value of CIS_LEV_L is "AC" and the value of CIS_LEV_H is "1C" at the FSK level at -13dB, this value is written.

In addition, the CAS level is -15dB so that "D0" and "8A" are written inside the internal registers (see values corresponding to -15dB of Tone gain1 and Tone gain2 in FIG. 5).

2) When the initial value is set, the CSLIB unit 43 sends out FSK and CAS signals of a predetermined level whenever CID information is sent to the telephone connected to the CSLIB unit 43 according to the value set in the register.

3) In some phones, the CID signal may not display or work well.

In most of these cases, when the line condition is bad or CID information is received during a call (Type II method), the reception rate decreases due to the ambient noise level.

4) In this case, you need to change the level through the program.

For example, suppose that the reception rate of a general telephone that supports only CID 101 (the CID telephone in FIG. 3) is not good.

Assume that the initial FSK signal level is -3dB and the CAS signal level is -5dB.

Then, program the level value of station 101 by increasing 5dB from the initial value to send -8dB FSK signal and -10dB CAS signal, and then press the Save button.

Accordingly, the MPB 41 corresponds to the FSK level value of -dB in the internal registers (Lev_L, Lev_H / Tone gain1, Tone gain2) of the codec chip corresponding to the telephone extension 101 connected to the CSLIB unit 43, respectively. "," "32" and "10" corresponding to the CAS level value of -10dB will be written.

After the end of the program, the CSLIB unit 43 transmits the signal of the FSK level and the CAS level of the increased intensity to the telephone extension 101 to the telephone.

In most cases, increasing the level by only 3 to 5 dB will result in a very good reception, which will satisfy the customer.

In addition, if you specify extension 101 to extension 104 in the program, you can increase the FSK level and CAS level at once.

In addition, the signal of the Subscriber Acknowledgment Signal (SAS), the CAS, the FSK level, and the respective durations may be flexibly adjusted as described above.

In addition, because each country's specifications are different and the frequency is also different, it is necessary to adjust the frequency variation slightly.

As such, the present invention enables the CID frequency level to be flexibly adjusted for each CID capable telephone in the keyphone system and the PBX system so that the CID signal and data can be accurately received even in the surrounding noise environment, poor track environment, and long distance installation conditions. Therefore, an optimal CID data reception condition is formed.

Although the preferred embodiment of the present invention has been described above, the present invention may use various changes, modifications, and equivalents. It is clear that the present invention can be applied in the same manner by appropriately modifying the above embodiments. Accordingly, the above description does not limit the scope of the invention as defined by the limitations of the following claims.

As described above, the optimized caller information display device and method of the keyphone system according to the present invention can be installed at a distance of several kilometers because the level can be increased through the program even if the signal strength is reduced because the installation distance is far away Even when the reception rate is increased, there is an effect.

In addition, the present invention also has the effect that can be flexibly directly respond to CID telephones having poor characteristics.

In addition, the present invention has the advantage that it is possible to cope with a remote failure because only the desired extension number can be modified through the program on the spot without fixing the hardware.

Furthermore, the present invention can improve the reception rate by increasing the levels of several telephones at the same time, thereby ensuring convenience.

In addition, the present invention has an effect that can significantly improve the reception rate by adjusting the level of the signal level in a factory or market with a large amount of ambient noise.

Claims (4)

An MPB performing a main function of the key phone system; An LCO unit installed in the MPB and configured to receive a CID signal from the switching center by connecting to the switching center; A CSLIB unit installed in the MPB to control a CID signal level by connecting a CID telephone; A DTIB unit installed in the MPB and configured to connect with the digital telephone; An RS-232C installed in the MPB and connected to a PC; And a memory installed in the MPB and having a FSK level table and a CAS level table, the memory storing CID information to perform optimized caller information display. The apparatus of claim 1, wherein the optimized caller information display apparatus of the key phone system comprises: A digital telephone connected to the DTIB unit of the key phone system for receiving and displaying CID information from an external line and another extension line through a trunk line; A CID telephone connected to the CSLIB portion of the key phone system and supporting a call function and supporting a CID function; Optimized caller information display device of the key phone system characterized in that it further comprises a PC connected to the RS-232C of the key phone system to adjust the CID signal level. A tenth step of installing an MPB in the system, installing a CSLIB board, connecting a CID desk phone, and determining whether CID type II can be performed in the CID desk phone when another call is received while a call is received from an outside and busy. Steps; If the CID type II can be performed in the CID regular telephone in the tenth step, and performing the 20th step of detecting the CAS tone and the FSK data to display the CID data, the optimized caller information of the key phone system Display method. The method of claim 3, wherein the 20th step is A twenty-first step of determining whether a CAS tone is detected if CID type II can be performed in the CID telephone; If the CAS tone is not detected, increasing the CAS level to return to the tenth step of waiting for another call when the call is in progress; A twenty-third step in which, when the CAS tone is detected, the phone sends out a predetermined tone to indicate that the CAS tone is detected; A twenty-fourth step of determining whether FSK data is detected after the twenty-third step; If the FSK data is not detected, increasing the FSK level to return to the tenth step of waiting for another call when the call is busy; And displaying the CID data normally during the call when the FSK data is detected.

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