KR930005595B1 - Line seizuring & dialing method in prearrangement - Google Patents

Abstract

The method reserves stationary line by registering a stationary line seizure digit and target phone number on a memory in a private branch exchange and dials the registered phone number automatically when stationary line is detected to be free. The method includes the steps of: (A) checking stationary trunk state; (B) sending busy tone to a transmitter when a trunk is occupied and checking that reserving key is input; (C) storing stationary line seizure and phone number on a memory when the reserving key is input; (D) checking trunk state periodically till a trunk becomes free; (E) checking that the reserved phone number is in idle state; (F) sending digit of the reserved phone number through a trunk when the reserved phone number is in idle state; and (G) sending ring signal and reserved phone number digits to a transmitter who reserving the phone number.

Description

CO line caesar and dialing method when booking CO line in private exchange

1 is a system configuration diagram of a private exchange.

2 is a flow chart in accordance with the present invention.

3 is a memory map diagram according to the present invention.

* Explanation of symbols for main parts of the drawings

10: CPM 20: switching network

30: ALI 40: ATI

50: MFM 60: CTM

70: LPM

The present invention relates to a CO line seizure and dialing method when a CO line is reserved at a private exchange, and in particular, to a CO line reservation when a CO line is reserved, a telephone number of a CO line Caesar digit and a calling party subscriber is reserved. The present invention relates to a CO line caesar and a dialing method for automatically dialing a causal line by registering.

In current private exchanges, CO lines are shared by many subscribers, and when the calling subscriber wants to make CO calls, the CO line procedure digits are dialed first, and then the phone number of the other party is dialed. At this time, if all of the CO lines connected to the private exchange are busy, the CO line can be reserved to allow the calling subscriber to make CO calls when the CO line becomes free.

Here, the CO line reservation is made by dialing the digit “1” after the hook flash if the calling subscriber's telephone is a regular telephone. In the case of a digital telephone, the hook flash key is pressed according to the telephone. Afterwards, CO line reservation is made by dialing digit “1” or pressing CO line reservation key.

1 is a general system configuration diagram of a private exchange, and is a main processing system of the system. The central processing module which stores the program and data of the system and controls the system as a whole CPM 10), a switching network 20 serving as a switching access path of the system under the control of the CPM 10, and an analogue for connection with an analog premises subscriber telephone ST. A log subscriber unit (hereinafter referred to as "ALI") 30 and an analog trunk trunk interface (hereinafter referred to as "ATI") 40 And a dual tone multi frequency (DTMF) sender and receiver to process the MFC when the subscriber ST is a multi-frequency code (MFC) type telephone. Multi-frequency processing unit quency module: A tone supply unit (hereinafter referred to as "MFM") 50 that is a tone source and supplies a tone generated through the switching network 20 under the control of the CPM 10. tone Module (hereinafter referred to as “CTM”) 60 and a line processing unit for controlling the state check and operation of the ALI 30, the ATI 40, and the MFM 50 under the control of the CMP 10. Line Processing Module (hereinafter referred to as "LPM") 70.

The configuration of FIG. 1 is a system configuration diagram of an analog line service of a general private information exchange that enables call service of an analog line and a digital line.

Referring to the configuration of FIG. 1, an operation example of a conventional trunk line caesar and reservation method will be described below.

First, when the subscriber in the premises receives a handset of the premises subscriber telephone ST of FIG. 1 and presses the CO line procedure digit, the CPM 10 checks the trunk of the ATI 40 through the LPM 70. In this case, the dialed digit of the premises subscriber telephone ST may be a dial pulse or a DTMF signal according to the telephone. In the case of the dial pulse, the CPM 10 may be connected to the ALI 30 and the LPM 70. Recognize this. The DTMF signal is decoded by the DTMF receiver of the MFM 50 through the ALI 30 and the switching network 20, and recognized by the CPM 10 through the LPM 70.

When the CPM 10 is free of the trunk check result of the ATI 40, the dial tone of the telephone company is connected to the subscriber subscriber station ST of the calling subscriber. The calling party then makes a call by dialing the phone number of the other party that they want to talk to.

On the other hand, if the CMP 10 checks all trunks of the ATI 40, the CMP 10 controls the CPM 60 to connect the congestion tone to the calling subscriber's ST. . Then, the calling subscriber hooks on or makes a trunk line reservation.

CO line reservations vary from phone to phone as described above.

When the trunk line reservation is made, the CPM 10 periodically checks the trunk of the ATI 40 and connects a reservation ring signal to the subscriber subscriber station ST of the calling subscriber through the ALI 30 when the trunk is free. Let it be.

The reserved call is made by listening to the reservation ring signal and the calling party hooks off the premises subscriber phone ST and dials the telephone number of the other party to call.

In addition, if you press “6” to designate the trunk line of “A” telephone station, if you press “9”, you can press the “C” telephone line of “B” telephone station. To specify.

As described above, when the CO line is reserved, the CO line caesar and dialing method is inconvenient to re-dial the desired phone number when the CO line becomes free after making a CO line reservation.

In addition, when the CO line was in Caesar state, it was not possible to know which phone line was picked up.

Accordingly, an object of the present invention is to provide a CO line caesar and dialing method capable of dialing a phone number automatically registered at a CO line caesar by registering a CO line Caesar Digit and a caller subscriber's phone number when making a CO line reservation at a private exchange. .

Another object of the present invention is to provide a CO line caesar and dialing method capable of reserving a plurality of subscriber phone numbers by allocating and registering a CO line Caesar digit and a CO line reserved telephone number in a predetermined memory area when making a CO line reservation.

It is still another object of the present invention to transmit a CO line digit and a CO line reserved telephone number registered at a caesar line after a CO line reservation to a calling subscriber's premises subscriber phone to display through a predetermined display device so that a calling line can be displayed at a call. It is to provide a trunk line caesar and dialing method that can know the phone number.

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

The private exchange to which the present invention is applied is configured as shown in FIG. 1 and has the same reference numeral.

2 is a flowchart of a CO line procedure and dialing function when a CO line reservation is made according to the present invention. When a hook-off is performed, a CO line call inspection process is performed to check whether a CO line call is input by inputting a dialed digit of a calling subscriber, and a CO line in the CO line inspection process. If the call is not in the premises call service process to perform the premises call service, the trunk line check process to check the trunk line call temporary trunk status in the trunk line call inspection process, the trunk status check result in the trunk line check process trunk pre-temporary trunk A trunk line dialing process of transmitting a telephone number digit, a trunk line reservation determination process of transmitting a runaway sound to a calling subscriber and checking whether a trunk line reservation key is input if the trunk is busy during the trunk line check process in the trunk line inspection process; When the reservation key is input during the reservation decision process, The trunk line reservation registration process of assigning and storing the trunk line scissor and phone number inputted in the call inspection process to a predetermined memory area, and the trunk line reservation inspection process of checking trunk status at regular intervals until the trunk becomes free after performing the trunk line reservation process; In the trunk line reservation check process, when the trunk is pre-paid, the reservation phone number idle check process checks whether the registered reservation phone number is idle, and when the reservation phone number is idle in the reservation phone number child check process. The trunk line reservation dialing process of transmitting a digit of the registered reserved telephone number to the caller; and after performing the trunk line reservation dialing process, a reservation ringing signal is sent to the calling party and the hooking is checked to check whether or not a hook-off occurs. Ring and digits to send a reserved reservation number Jung, made after the trunk dialing process and performing the reservation ring and the digits sent by a call process procedure of the communication service.

FIG. 2 is a flowchart of execution of the CPM 10 of FIG.

3 is a memory map diagram of a trunk line reserved telephone number according to the present invention, which shows that n predetermined trunk line telephone numbers are registered by allocating a predetermined memory area of the CPM 10. Where n is a nonzero natural number.

An operation example of FIG. 2 according to the present invention will be described in detail with reference to the system configuration diagram of FIG. 1 and the memory map diagram of FIG.

First, the CPM 10 of FIG. 1 checks in step A2 of FIG. 2 whether or not the “hook off” of the subscriber telephone ST connected to the ALI 30 through the LPM 70 is performed. When it is "hooked off" in step (A2), in step (A4), the digit to be dialed by the calling subscriber of the premises subscriber phone ST is input, and in step (A6), it is checked whether a trunk line call is made. At this time, whether or not a trunk line call is determined by a trunk line scissors digit, but if the trunk line scissors digit is not input, it is determined to be a premises call, and in step A36, the premises call service is performed and returned.

If the dialing digit is a CO line digit and a telephone number together, the dialing digit is determined to be a trunk line call, and the flow proceeds to step A8 to check the trunk state of the ATI 40 through the LPM 70.

Here, the input of the dialing digit is input and recognized by the CPM 10 through different paths according to the type of telephone as described above.

In step (A8), the trunk status is checked, and in step (A10), it is checked whether the trunk is free. In step (A38), the trunk proceeds to step (A38) to transmit a phone number digit to the trunk. Return after executing.

Meanwhile, in step (A10), when the trunk is busy, the control of the CTM (60) is performed in step (A12) to send a runaway sound to the calling subscriber, and in step (A14), it is checked whether a trunk line reservation key is input. In this case, the CO line reservation key input is as described above.

If the CO line reservation key is not input in step (A14), and the CO line reservation key is input, the dialing digit of the calling subscriber entered in step (A4), that is, the CO line scissor and telephone number, is entered. It registers in order in the predetermined memory area allocated as shown in FIG.

Next, the trunk state of the ATI 40 is checked through the LPM 70 at step A18 to check whether the trunk is free at step A20.

If the trunk is not free at step (A20), the above-described process is repeated at a predetermined cycle by looping to step (A18), and if the trunk is free, the registered reserved telephone number at step (A22). Children are checked in the order of registration as shown in FIG. 3, and it is checked in step (A24) whether the reservation telephone number is children.

If the children are not in step (A24), looping to the step (A22) and repeating the above-described process at regular intervals, and if the reservation telephone number is the children, the children of the trunk of the ATI 40 in step (A26). Send the digits of the reserved phone number. In step (A28), the reservation ring signal is transmitted to the premises subscriber telephone ST of the calling subscriber who made the reservation of the trunk line through the ALI 30, and the hook-off is checked in step A30.

Upon hearing the outgoing subscriber reservation ring signal and hooking up the handset of the premises subscriber telephone ST, the registered reservation telephone number digit is transmitted to the outgoing subscriber who has hooked off in step A32.

Accordingly, if the subscriber station ST is a phone having a predetermined number, the calling party and the telephone number currently connected are displayed on the display device of the subscriber station ST so that the calling subscriber knows. To be able.

Next, in step (A34), the call service is performed, and when the call is completed, the registered phone number is deleted and returned.

As described above, according to the present invention, the calling subscriber dials the telephone number of the CO line Caesar digit and the called party at a private exchange, regardless of whether the CO line is reserved or not. By registering a reservation and dialing the telephone number automatically registered at the CO line procedure, the calling party does not need to dial the telephone number again.

In addition, by registering and registering CO line Caesar digits and CO line reserved phone numbers in a predetermined memory area, a number of subscriber phone numbers can be reserved.In the case of domestic Caesar calls, an outgoing subscriber can know the CO line and phone number. .

Claims (1)

A central processing unit (10) for storing the programs and data of the system and controlling the system as a whole, and a switching network (20) serving as an exchange connection path of the system by the control of the central processing unit (10); An analog subscriber unit 30 for connection with an analog premises subscriber telephone, an analog trunk line relay unit 40 for connection with a telephone station trunk line, a DTMF sender and a receiver is provided for the subscriber to the multi-frequency code. In the case of a telephone system, a multi-frequency processing unit 50 for processing a multi-frequency code, and a tone supply unit 60 which becomes a tone source and supplies the tone generated through the switching network 20 under the control of the central processing unit 10. And the state check and operation of the analog subscriber unit 30, the analog trunk line relay unit 40, and the multi-frequency processing unit 50 under the control of the central processing unit 10. In a private line exchanger having a line processing unit 70, a trunk line caesar procedure and dialing method for reservation of a trunk line, wherein a dialed digit of a calling subscriber is inputted through the line processing unit to check whether the line is a trunk line call during a hook-off; In-line call service process to perform the premises call service when the CO line call is not in the trunk line inspection process, and trunk line inspection to check the trunk state of the analog trunk line relay unit through the line processing unit during the CO line call process in the CO line call inspection process A trunk line dialing step of transmitting the telephone number digit to a trunk check result trunk pre-temporary trunk in the trunk line check process; and a caller controlling the tone supply unit if the trunk is busy during the trunk line check process in the trunk line check process Send a runaway sound to the CO line reservation key A trunk line reservation determination process for checking whether an entry is made, a trunk line reservation registration process for allocating and storing a trunk line procedure and a telephone number input during the trunk line call inspection process when a trunk line reservation key is input in the trunk line reservation determination process; A trunk line reservation inspection process for checking trunk status with the analog trunk line relay unit at regular intervals until the trunk becomes free after the trunk line reservation process is performed, and the children of the registered reservation telephone number when the trunk is free during the trunk line reservation process. A reservation telephone number child checking process for checking whether a reservation telephone number is idle, a trunk line reservation dialing process for transmitting a digit of the registered reservation telephone number to the trunk of the trunk line relay when the reservation telephone number is idle in the reservation telephone number children checking process; The outbound subscription after performing the CO line reservation dialing process A reservation ring and digit transmission process for transmitting the registered reservation telephone number digit to the calling subscriber when the hookoff is sent by checking a hooking off and checking whether the hook is off; and the trunk line dialing process and the reservation ring and digit transmission process. Call line caesar and dialing method when the CO line reservation in the private exchange, characterized in that the call process to perform a call service after performing.