KR100198218B1 - Exclusive public mode switching method - Google Patents

Abstract

In a conventional telephone set connected to a private branch exchange such as a key telephone system, a user sets a connection mode for exclusive use of a trunk line when necessary, so that every time a user makes an outside call, The present invention relates to a method for switching a CO line dedicated mode of a key telephone system access terminal to solve the inconvenience that must be firstly pressed and stores reference data for switching an operation mode of the telephone into a CO connection mode, Determines whether or not the input key input data matches the reference data, and changes the predetermined state data level to the first level when the data input by the user and the reference data match, When the off-hook is detected in the state of level, it corresponds to the leased line number It is characterized in that to transmit the DTMF signal toward the host device.

Description

And a method for switching a mode for exclusive use of a trunk line of a key telephone system access terminal

FIG. 1 is a block diagram schematically showing an internal configuration of a general keyphone system. FIG.

FIG. 2 is a functional block diagram showing a mode switching device dedicated to CO line of a key telephone system access terminal according to an embodiment of the present invention; FIG.

DESCRIPTION OF THE REFERENCE NUMERALS

I: Keyphone system main controller A:

D: Digital terminal unit A1-An: Common telephone

D1-Dn: Digital terminal 1: Station terminal connection terminal

2: ring signal detection unit 3: ring generation unit

4: Loop circuit 5: Handset

6: Connection to call 7: Network circuit

10: Display section 11: Memory

12: Microprocessor 13: Keypad

14: Dual Tone Multi-Frequency (DTMF) generating circuit

16: Audio data storage unit 17: CODEC (coder-decoder)

18: Digital Signal Processing Processor (DSP)

41: CO line connection detecting unit 42: Interface circuit

51: Mouthpiece 52:

10a: light emitting display part 10b: display driving part

BF1, BF2: bidirectional buffer

The present invention relates to a telephone, and more particularly, to a telephone set connected to a private branch exchange such as a key telephone system and used as an old contents terminal, And a method for switching the mode of the key telephone system access terminal to a mode for exclusive use of a CO line system and a device therefor, which can solve the inconvenience of having to first press a dedicated line number.

In general, the key telephone system is one of the private exchanges developed to provide various services required for office automation. Currently, it is the most widely used exchange system ranging from schools and public institutions to medium and small businesses. Figure 2 is a schematic representation of the internal configuration of a typical keyphone system.

As shown in FIG. 1, a typical key phone system includes a plurality of analog conventional telephones A1-An connected to a subordinate, a plurality of digital terminals D1 to Dn (I), which performs the exchange function between the line and the extension or between the extension and the extension, including various additional services such as a multi-party call function, Respectively.

In FIG. 1, reference numeral 100 denotes a control unit for controlling overall operation of the master key I, 101 denotes a program storage unit for storing operation programs necessary for performing an exchange function including various supplementary services, 102 denotes a plurality of A data storage unit for storing registration information for subordinate terminals A1 to An and D1 to Dn and a dedicated line selection number for connection to a CO line, and an analog terminal 103 for analogue general telephone (A1-an) Reference numeral 104 denotes a digital subscriber module (DSM) for subscriber matching of digital terminals D1 to Dn; 105 denotes a digital subscriber module (DSM) Central Office Trunk Mosule (CTM).

Reference numeral 106 denotes a switch for performing a switching operation between the coaxial lines LINE 1 to LN and the subscriber stations A1 to An and D1 to Dn or an extension subscriber terminal according to a predetermined control command from the controller 100 107 denotes a mixer for executing a call mixing function such as a multi-party simultaneous call function, 108 denotes a dual tone multi-frequency (DTMF) signal transmitted from a CO or an extension terminal, And a DTMF receiver 109 for outputting code data. A real time clock (RTC) 109 generates a clock for generating real time data.

That is, according to the key telephone system configured as described above, when there is a call setup request from any extension subscriber terminal, the control unit 100 in the master device I determines whether the DTMF signal transmitted first is a leased line number And performs the exchange function between the CO line and the extension or extension by controlling the switching circuit 106.

However, each time the extension subscriber of the above-mentioned keyphone system wants to communicate with the external subscriber through the trunk line, he / she presses a dedicated line number set to '9' or '0' before the called subscriber number every time, It is troublesome to dial the number of the opponent subscriber as much as after confirming that the number of the calling party is dialed. For example, in the case of a user who frequently calls frequently with the outside subscriber, There was a problem that it felt to be.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an apparatus and a method for setting up a CO line dedicated connection mode by a simple key operation by a user, And to provide a method for switching a CO line dedicated mode of a key phone system access terminal and an apparatus therefor.

In order to achieve the above object, according to the present invention, there is provided a method for switching a CO line dedicated mode of a key telephone system access terminal, comprising: a mode conversion data storing step of storing and setting reference data for switching an operation mode of a telephone into a CO connection mode; Determining whether or not the input key input data matches the reference data, determining whether the input key input data matches the reference data, comparing the data input by the user with the reference data, And transmitting a DTMF signal corresponding to a leased line number to the master device when an off-hook is detected in a state where the level of the status data is the first level. do.

In order to achieve the above-mentioned object, a CO line dedicated mode switching device of a key telephone system access terminal includes an extension terminal connection terminal for connecting to an extension subscriber matching device of a key telephone system main unit, a number used for dialing or selecting a specific function And a DTMF generating circuit for outputting a DTMF signal corresponding to the key input of the user, wherein the telephone comprises: a memory for storing the agreed reference data for switching the operation mode of the telephone to the trunk line dedicated connection mode, A state storage unit for changing an internal state flag according to a predetermined control signal, a dedicated line number storage unit for storing a dedicated line number for CO line connection, The mode switching data storage unit, The flag in the state storage unit is changed to the first level, and when the flag becomes the off-hook state in the state of the first level, the flag is set to the private line connection terminal side based on the data stored in the dedicated line number storage unit And a control unit for controlling the transmitting unit to preferentially send out the information.

In other words, according to the present invention having the above-described configuration, it is possible to eliminate the inconvenience of first pressing a dedicated line number for a trunk line connection every time an outside call is made by setting a trunk line dedicated connection mode as needed through a simple key operation do.

Hereinafter, embodiments according to the present invention will be described with reference to the accompanying drawings.

FIG. 2 is a block diagram illustrating a mode switching apparatus for a CO line dedicated terminal of a key telephone system access terminal according to an embodiment of the present invention. Components having the same functions as those shown in FIG. 1 are denoted by the same reference numerals A detailed description thereof will be omitted.

In FIG. 2, reference numeral 1 denotes an extension terminal connection terminal for connection to the extension subscriber registration device of the key telephone system main unit I, and reference numeral 2 denotes an extension terminal connection terminal 3 is a ring generator for outputting a ringing tone of an audible frequency to a receiver on the basis of an applied ring signal and 4 is a counterpart terminal (hereinafter referred to as a counterpart) The loop circuit 4 includes a CO line detection unit 41 for detecting a connection state with a partner station, and a CO line detecting unit 41 for detecting a connection state between the CO line and the CO line. And an interface circuit 42 for performing an interface function of a signal between the apparatus and the apparatus.

Reference numeral 5 denotes a handset. Reference numeral 6 denotes a call connection unit for interrupting the call path in accordance with the ON / OFF state of the hook switch in cooperation with a hook switch which is turned on / off when the user lifts or releases the handset. When the user picks up the handset, the hook switch is turned on (OFF HOOK), and the handset becomes ready to talk.

Reference numeral 7 denotes a speaker for amplifying a voice signal of a sender applied from a game station or a voice signal of a user applied through the handset during a voice communication to a predetermined level via the interface circuit 42 and the call connection unit 6, tone, and the like. Reference numeral 10 denotes a display unit for informing the user of the current operating state of the telephone, and reference numeral 11 denotes a memory for storing data necessary for operation of the telephone.

Reference numeral 12 denotes a microprocessor as a control unit for controlling operation of the entire apparatus based on a signal detected by the ring signal detecting unit and the CO connection detecting unit 41. Reference numeral 13 denotes a microprocessor for performing dialing, And a keypad 14 having numeric keys and function keys used for selecting a DTMF (Dual Tone Multi) key corresponding to a control command of the microprocessor 12, -Frequency) signal.

Reference numeral 16 denotes a voice data storage unit for storing predetermined voice data for the voice message automatic reception and response function as coded digital code data. Reference numeral 17 denotes a voice data storage unit for decoding the voice data stored in the voice data storage unit 16 A coder-decoder 18 for outputting a voice signal as a voice signal or for encoding a voice signal applied from the network circuit 7 on the contrary; Digital signal processor (DSP) that processes signals.

Reference numeral 200 denotes a mode switching data storage unit for storing key input data for switching the operation mode of the telephone set to the trunk line exclusive connection mode. Reference numeral 201 denotes a key input data input unit, A status register 202 in which an internal status flag is changed and set according to whether or not the data is registered in the mode switching data storage unit 200; and 202, a dedicated line number storage unit for storing a dedicated line number for CO line connection.

Next, the operation of the apparatus having the above-described configuration will be described.

The mode change data storage unit 200 stores the 3 digit digits data such as '# 12', and the user can register the mode change data in the mode change data storage unit 200 through the keypad 13 The microprocessor 12 changes the state flag of the status register 201 from, for example, '0' to '1', thereby changing the operation mode of the telephone to the trunk line dedicated connection mode .

Thereafter, when the user enters the off-hook state as the handset 5 is loaded, the microprocessor 12 checks the status flag of the status register 201. At this time, if the status flag is '1' The DTMF generation circuit 14 is driven and controlled based on the data stored in the dedicated line number storage unit 202 so that the user sends the dedicated line number to the host I side before dialing, It is possible to directly connect the main line I to the CO line.

That is, according to the embodiment, the user can set the CO line dedicated connection mode according to the need, thereby eliminating the inconvenience of having to first press the exclusive line number for the CO line connection every time the CO line is made to the outside.

The present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the technical gist of the present invention.

As described above, according to the present invention, by setting a connection mode dedicated for CO lines through a simple key operation, it is possible to solve the inconvenience of first pressing a dedicated line number for a CO line connection every time an external call is made, It is possible to realize a method for switching the CO line dedicated mode of the system access terminal and its apparatus.

Claims (2)

A mode switching data storing step of storing and setting reference data for switching an operation mode of the telephone to a trunk line exclusive connection mode; a data matching judging step of judging whether key input data inputted by a user coincides with the reference data; A state storage step of changing and setting a predetermined state data level to a first level when the data input by the user matches the reference data in the data matching determination step, And transmitting a DTMF signal corresponding to the leased line number to the host side when the hook is detected. A key input unit provided with an extension terminal connection terminal for connecting to an extension subscriber matching device of the key telephone system main unit, a numeric and function key used for selecting a dialing or a specific function by the user, and a DTMF signal And a DTMF generating circuit for outputting the DTMF generated by the DTMF generating circuit, wherein the telephone includes a mode switching data storage unit for storing committed reference data for switching an operation mode of the telephone to a trunk line exclusive connection mode, And a status display unit for displaying status information of the status storage unit according to whether the data input through the key input unit coincides with the data registered in the mode switching data storage unit, The internal flag is changed to the first level and this flag is set to the first level And a controller for controlling to transmit the leased line number preferentially to the main terminal connection terminal based on the data stored in the leased line number storage when the mobile terminal goes into the off- Mode switching device.