CN1263274C

CN1263274C - Key telephone system capable of displaying plurality of outgoing telephone numbers included in incoming calls

Info

Publication number: CN1263274C
Application number: CN 98125605
Authority: CN
Inventors: 高田佳德
Original assignee: NEC Infrontia Corp
Current assignee: NEC Platforms Ltd
Priority date: 1997-12-19
Filing date: 1998-12-18
Publication date: 2006-07-05
Anticipated expiration: 2018-12-18
Also published as: AU9722398A; AU752475B2; JP3241652B2; CA2256837A1; CN1226112A; JPH11187434A; TW382171B

Abstract

In a key telephone system which is operable in response to a plurality of incoming calls sent through a plurality of subscriber lines and which has a plurality of key telephone sets, a plurality of outgoing telephone numbers which are included in the incoming calls are displayed on a display member of each key telephone set under control of a key service unit. Each of the subscriber line numbers may be displayed together with each outgoing telephone number in a time division fashion. A combination of the subscriber line number and the outgoing telephone number may be informed in the form of a synthesized audio signal synthesized by the use of a voice synthesizer.

Description

The KTS (key telephone system) that can show a plurality of telephone numbers

Technical field

The present invention relates to a kind ofly in response to the exercisable KTS (key telephone system) of an incoming call, this incoming call is as an outbound call that sends from an outbound user and comprise an out telephone number of distributing to this outbound user's telephone device.

Background technology

As a rule, an outbound call sends by a public switched telephone network (abbreviating PSTN usually as) from the outbound user, and is received by the incoming call user as an incoming call.In recent years, carried out a kind of business and made an out telephone number be sent to the Incoming user and be presented at a display unit, as LCD from out telephone device.By this business, before conversation, can confirm this outbound user in advance the Incoming user side.

Up to now, people proposed various about how out telephone number notice Incoming user's scheme.For example, open among the flat 7-203006 (203006/1995) disclosed Japanese patent laid-open 5-244286 (244286/1993) and spy about receiving from outbound user's incoming call and can keeping distributing to the KTS (key telephone system) of outbound call user's telephone number.Especially, in last piece of writing document a kind of electron type PBX that can register out telephone number and extension in a history table and history file is disclosed.So out telephone number may be displayed in the display unit and can be confirmed by the Incoming user.The Incoming user is by pressing specific button callback outbound user automatically.

On the other hand, in back one piece of document, a string interrupted ringing signal is delayed up to KTS (key telephone system) and receives out telephone number.In other words, after out telephone number was be sure of to be received, ring was repeatedly by ringing signal sound that sequence is shaken.This is because out telephone number is inserted between two adjacent ringing signals.

Meanwhile, KTS (key telephone system) has a plurality of subscriber's line and KTU key telephone units that are called the button service unit that comprise subscriber's line and be connected to many expansion circuits that are connected to public switched telephone network usually.In this case, a plurality of KTU key telephone units are connected to the expansion circuit and have display unit, as liquid crystal indicator.Before the receiver of each KTU key telephone unit was picked up, each KTU key telephone unit can show the out telephone number that comprises from outbound user's incoming call on each display unit.

By this structure, each KTU key telephone unit is shown on this display unit out telephone number respectively.This shows that an out telephone number is sent to each KTU key telephone unit from every subscriber's line by this button service unit.

Please note that a plurality of outbound calls arrive as incoming call simultaneously by many subscriber's lines that are contained in the KTS (key telephone system) here.When outbound call was accompanied by different out telephone numbers, this striking out telephone number was sent to different KTU key telephone units respectively and is shown.In other words, the display unit at each respective keys telephone device shows an out telephone number respectively.

This shows that remaining out telephone number can not be presented on the display unit of each all the other KTU key telephone unit.

In this case, suppose that a urgent call arrives wherein KTU key telephone unit away from everyone, unessential calling simultaneously arrives another nearer KTU key telephone unit.In this case, because the out telephone number of urgent call is not shown on any other telephone device, even then be difficult to promptly response be made in this urgent call when this striking out telephone number is shown on the described KTU key telephone unit yet.

Summary of the invention

An object of the present invention is to provide a kind of KTS (key telephone system) that receives the different incoming calls that comprise out telephone number of can handling simultaneously.

Another object of the present invention provides a kind of KTS (key telephone system) of described type, even also can react to it rapidly when making its KTU key telephone unit of keeping an eye on a no one receive a urgent call.

The 3rd purpose of the present invention provides a kind of KTS (key telephone system) of described type, makes it can show a plurality of out telephone numbers and can not increase cost.

KTS (key telephone system) of the present invention can combine with public switched telephone network, sends a incoming call as the outbound call that comprises an out telephone number to receive from the outbound user.This KTS (key telephone system) comprises the button service unit that joins with many subscriber's lines, and many subscriber's lines that join with this button service unit.According to the present invention, this KTU key telephone unit comprises that a display unit and one are connected with the button service unit and are provided at a plurality of out telephone number that sends on many subscriber's lines and the control section that shows to this display unit on display unit.

A plurality of KTU key telephone units can be contained in this KTS (key telephone system) to show the out telephone number that sends by many subscriber's lines.The demonstration of this out telephone number is preferably in the display unit of the viewing area with delegation and carries out by the time-division mode, but simplified structure like this.

On the other hand, this button service unit comprises that a plurality of a plurality of subscriber line circuits that are connected respectively to subscriber's line, a plurality of each subscriber line circuit that is connected to are used for detecting and send and be contained in the telephone number detector of the out telephone number of incoming call, a plurality of expanded circuit that is connected to this KTU key telephone unit, one by subscriber's line and be used for carrying out selectively being connected with the switching circuit that forms the interface channel between them and being used to control this switching circuit to form the controller of this interface channel between subscriber line circuit and the expanded circuit.

Accompanying drawing is described

Fig. 1 is the block diagram that is used for the button service unit of KTS (key telephone system) of the present invention;

Fig. 2 is the block diagram of the KTU key telephone unit of the first embodiment of the present invention;

Fig. 3 is the flow chart of operation that is used to describe the KTS (key telephone system) of the first embodiment of the present invention;

Fig. 4 is the block diagram of the KTU key telephone unit of the second embodiment of the present invention;

Fig. 5 is the flow chart of operation that is used to describe the KTS (key telephone system) of the second embodiment of the present invention;

Fig. 6 is the block diagram of the KTU key telephone unit of the third embodiment of the present invention;

Fig. 7 is the flow chart of operation that is used to describe the KTS (key telephone system) of the fourth embodiment of the present invention.

Embodiment

The key system of first embodiment of the invention can be used for the private exchange system of electron type as shown in Figure 1, abbreviates electronic switching system (ESS) as.KTS (key telephone system) shown in the figure comprises a central equipment, that is, a button service unit 1 wherein comprises the first subscriber's line L1-Ln to the n bar, they are connected to public switched telephone network (PSTN) (not shown), also link the first and second expansion circuits in the example shown.

In the example shown, this button service unit 1 have be connected to first to n bar subscriber's line L1-Ln first to n bar subscriber line circuit l1-ln, and first and second expanded circuits 14 and 15 that are connected respectively to the first and second expansion circuits, wherein the first and second expansion circuits are connected respectively to first and second push-button phones 2 and 3 again.Although in Fig. 1, do not illustrate, when three or more KTU key telephone unit is connected to this button service unit 1, also can in this KTS (key telephone system), adopt similar structure.

In Fig. 1, each first to n subscriber line circuit l1-ln is used to catch, connects or discharges every subscriber's line, and each first can be used for detecting each receiving dialed number that sends by each subscriber line circuit l1-ln from public phone exchanges network to n circuit number detector.In addition, being connected between each expansion circuit and subscriber's line of each first and second expanded circuit 14 and 15 controls.

This button service unit 1 also is included in the switched circuit 16 between first to n subscriber line circuit l1-ln and first and second expanded circuits 14 and 15, the memory 18 that is used for the controller 17 that the interface channel between subscriber line circuit l1-ln and expanded circuit 14 and 15 is switched and stores the control program of being carried out by controller 17.Shown controller 17 also can be operated and be used to handle the vacancy notice that sends from KTU key telephone unit 2 and 3.

In the illustrated embodiment, first is connected to this controller 17 to n telephone number detector 101 to 10n passes through first to the n subscriber line circuit l1-ln out telephone number that receives respectively to detect, and this telephone number can be called receiving dialed number respectively, obscures on " Incoming " and " striking out " these two speech so that avoid.

With reference to Fig. 2 and in conjunction with Fig. 1, each KTU key telephone unit comprises I/O (I/O) interface (I/F) circuit 20, telephone circuit 21, receiver, timing circuit 24 and memory portion 25.These I/O interface circuit 20 response bell signal, voice signal and similar signal, the interface of carrying out between button service unit 1 and the telephone circuit 21 is handled, and telephone circuit 21 amplifies transmission voice signal or received speech signal and handles sidetone of a telephone set.In addition, shown receiver is made of a microphone 22 and a loudspeaker 23, and timer 24 is determined showing a plurality of subscriber's line numbers of demonstration and a plurality of reception (striking out) telephone number on the firmware with time division way, and this will be described below.In addition, memory portion 25 temporary transient storages are from the subscriber's line number and the reception phone of 1 transmission of button service unit.

KTU key telephone unit 2 and 3 shown in each also comprises and resembles the such display unit 26 of LCD (LCD), keyboard 27 and the luminous component resemble the light-emitting diode 28.Keyboard 27 can be operated and be used for placing off hook state or hook state at transmit leg of calling out or recipient's KTU key telephone unit, and imports telephone number by well-known mode.As hereinafter will specifically describing, when a plurality of incoming calls are received simultaneously by many subscriber's line L1-Ln, shown in display unit 26 can show many subscriber's lines and a plurality of out telephone number by the time-division mode.In addition, luminous component 28 is luminous when transmission or receipt of call.

In addition, shown in KTU key telephone unit 2 or 3 also have the hard disc apparatus 40 that is used for when at every turn receiving each incoming call, storing this striking out telephone number, and be connected to the control section 29 of above-mentioned

parts

20,21,24,25,26,27,28 and 40 so that they are controlled.At this, please note that described control section 29 is used for when receiving incoming call by first to n bar subscriber's line L1-Ln, make to show a plurality of subscriber's line numbers and a plurality of out telephone number.More particularly, these a plurality of subscriber's line numbers and a plurality of out telephone number sequentially are presented on the single file viewing area of display unit 26 by the time-division mode.In other words, shown in display unit have the single file viewing area, thereby simplify the structure and reduce cost.

With reference to Fig. 1 and 2, the operating process of the KTS (key telephone system) of first embodiment of the invention will be described below.In button service unit 1 shown in Figure 1, first to n bar subscriber's line L1-Ln first to nth user's circuit l1-ln and the control of controller 17 under be hunted down, be connected and discharge.Each first to n telephone number detector 101-10n response is by first to n bar subscriber's line L1-Ln and detect out telephone number to produce the telephone number that is detected by the incoming call that the public switched telephone (not shown) receives.

The telephone number that detects is sent to controller 17, and is shown in a manner described on first and second telephone devices 2 and 3 by controller 17.In addition, controller 17 control first and second expanded circuits 14 and 15 are connected between this expansion circuit and the outside line them.

Commutation circuit 16 is switched the interface channel between subscriber line circuit l1-ln and expanded circuit 14 and 15 under the control of controller 17.In this case, controller 17 is operated according to the control program that is stored in the memory 18, with the handover operation of interface channel between execution subscriber line circuit l1-ln and expanded circuit 14 and 15, and the vacancy notice of sending from KTU key telephone unit 2 and 3 is set.This shows that controller 17 is according to the various operations that are stored in the control program control button service unit 1 in the memory 18.

In each telephone device 2 and 3 shown in Figure 2, input/output interface circuit 20 is executed in button service unit shown in Figure 11 relevant input/output interface and handles.In this input/output interface was handled, ring tone signal and voice signal were handled by interface circuit 20.21 pairs of signals from microphone 22 transmissions of this telephone circuit amplify with the signal that receives loudspeaker 23, and handle sidetone of a telephone set.

Shown in control section 29 response by first to the n bar subscriber's line L1-Ln incoming call that sends, on display unit 26, show a plurality of subscriber's lines of being contained in the incoming call number and a plurality of out telephone numbers.This display operation is carried out by the time-division mode.

In addition, when each out telephone number by on the time with time division way display unit 26, timing circuit 24 is measured the demonstration times or to showing the time timing.This demonstration time or measured time can for example, be provided with 1 second time by changing by the user is set to the operation of keyboard 27 or under the control of control section 29.

Shown in the KTU key telephone unit 2 or 3, these control section 29 control display units 26 show with time division way distributes to the subscriber's line number of subscriber's line L1-Ln and the out telephone number of incoming call, and makes luminous component 28 luminous when sending outbound call and receiving incoming call.In addition, keyboard 27 is operated in striking out or incoming call KTU key telephone unit 2 or 3 is placed off hook state or hook state, and the output telephone number, and hard disc apparatus 40 is used for each striking out (reception) telephone number that storage package is contained in each incoming call.

Referring to Fig. 3 and in conjunction with Fig. 1 and 2, specifically describe below when a plurality of incoming calls and by subscriber's line L1-Ln and receive button service unit 1 process by time-division mode explicit user circuit number and out telephone number when installing.When incoming call arrived button service unit 1 by the subscriber's line L1-Ln shown in Fig. 1, first to n telephone number detector 101-10n detected the telephone number that is contained in the incoming call by first to nth user's circuit l1-ln.The out telephone number that is detected is sent to controller 17 from detector 101-10n.

Make incoming call arrive KTU key telephone unit 2 by dialling in from the first subscriber's line L1.In this case, controller 17 makes first expanded circuit 14 send to the calling tone signal by the specified KTU key telephone unit 2 of this incoming call by control.

On the other hand, make incoming call indicate a representational telephone number.In this case, controller 17 monitoring first to nth user's circuit l1-ln, expanded circuit 14 and 15 and commutation circuit 16 to detect freephone in the KTU key telephone unit 2 and 3 the calling tone signal is sent to this freephone device.

When calling tone signal during from KTU key telephone unit 2 that this button service 1 sends to shown in Fig. 2, this push-button phone unit 1 is transmission package subscriber's line number (line number of the first subscriber's line L1) and out telephone number of being contained in the incoming call and sending by public switched telephone network simultaneously.As a result, calling tone signal, subscriber's line L1 and out telephone number send to described KTU key telephone unit 2.In KTU key telephone unit 2, under the control of control section 29, subscriber's line L1 and out telephone number are stored in respectively in storage area 25 and the hard disc apparatus 40.

In addition, the ring tone signal is sent to the loudspeaker 23 of KTU key telephone unit 2 to produce ring tone by telephone crosstalk 21.Can produce this ring tone with predetermined ring or loudspeaker.When producing ring tone, subscriber's line L1 and out telephone number are read and are shown on the display unit 26 from memory 25.The demonstration of this subscriber's line number and out telephone number can show according to for example mode of " 1.12345678 " in delegation.Like this, when the receiver off-hook, this hook state is applied off hook signal and sends to button service unit 1 by control section 29 and input/output interface circuit 20.

This button service unit 1 passes through expanded circuit 14 and off hook signal from KTU key telephone unit 2.In this case, commutation circuit 16 Be Controlled make subscriber line circuit 11 be connected to expanded circuit 14 to form the transmission channel between subscriber line circuit 11 and the expanded circuit 14.After this, between the user, begin voice communication by public switched network with closed voice channel.After voice communication finished, button service unit 1 sent an on-hook signal to discharge this voice channel.

Before this on-hook signal was by 1 reception of button service unit, KTU key telephone unit 2 continued with outbound user's conversation of sending incoming call and keeps the state of reception incoming call.This state is called as the accepting state of incoming call.In the accepting state of incoming call, suppose that other incoming call arrives other subscriber's line L2-Ln and comprises other out telephone number.In this case, this other out telephone number and other subscriber's line number are together sent to KTU key telephone unit 2.This KTU key telephone unit 2 is stored this other out telephone number or other subscriber's line number in memory portion 25.Like this, this KTU key telephone unit 2 is finished the preparation of demonstration.

In Fig. 3, KTU key telephone unit 2 is at first carried out the first step S101 that begins to show on display unit 26, and enters the second step S102 that activates timing circuit 24 and begin Measuring Time.And then third step S103 after this second step S102, in third step S103, whether timing circuit 24 Measuring Time also detect through one period scheduled time, for example 1 second.If in third step S103, timing circuit 24 does not detect and has passed through one period scheduled time, then enters the 4th step S104 from third step S103, in this step, displaying contents on display unit 26, and remain unchanged, turn back to third step S103 then.In the example shown, at the 4th step S104, the subscriber's line number (L1) and the out telephone number that are contained in the incoming call are shown on the display unit 26 continuously.

On the other hand, when at third step S103 through one section preset time, the five step S105 of control section 29 before being in the 6th step S106 is to timing circuit 24 zero clearings.Control section 29 is judged other subscriber's line of whether having stored in the storage area 26 except that shown line number and out telephone number number and other out telephone number in the 6th step S106.This means in the time of reception that in the 6th step S106, judges whether in current calling and receive other incoming call.Especially, in the storage area 25 storage any except subscriber's line number (L1) other subscriber's line number (L2-Ln) and other any out telephone number that will be received by this KTU key telephone unit 3 as new display data signal.

If do not store any new video data in memory portion, then enter the 7th step S107 from the 6th step S 106, in this step, current subscriber's line number (L1) and current out telephone number remain unchanged on display 26.This means that in the 7th step S107, displaying contents on display or current video data remain unchanged.

On the other hand, control section 29 is judged in memory portion 25, stored in the 6th step S106 and resembled new subscriber's line number (L2-Ln) and the new so new display data signal of out telephone number.

In this case, enter the 8th step S108 from the 6th step S106, in this step, control section 29 reads and sends to display unit 26 to new display data signal from memory portion 25.In addition, being presented on the display unit 26 that current display data signal under the control of control section 29 and new display data signal replace.For example, suppose that current display data signal represented by " 1.1234-5678 ", and new display data signal is represented by " 5.8765-4321 ", and it is to be combined with out telephone number " 8765-4321 " by the 5th subscriber's line number " 5 " that is contained in other incoming calls.In this case, current display data signal " 1.1234-5678 " and new display data signal " 5.8765-4321 " with the time division way Alternation Display on display unit 26.

In addition, when the incoming call of one of them renewal arrived another one subscriber's line L3-Ln, three subscriber's lines number and three out telephone numbers were shown on the display unit 26 with the time division way order.After above-mentioned demonstration is carried out by receiver being put down when making KTU key telephone unit 2 become hook state, promptly, when this on-hook signal when this KTU key telephone unit 2 sends, this on-hook signal is transferred to the expanded circuit 14 and the controller 17 of button service unit 1 by input/output interface circuit 20.The controller 17 of this button service unit 1 judges by detecting on-hook signal whether voice communication or conversation finish at the 9th step S109.In addition, this controller 17 is carried out processing procedure by on-hook determined at the tenth step S110.Specifically, the interface channel that controller 17 control commutation circuits 16 are cut off between subscriber line circuits 11 and the expanded circuit 14, and send on-hook signal to public switched telephone network by subscriber line circuit 11, to discharge this connection or voice channel.

Simultaneously, this display unit 26 is controlled by control section 29, to stop at the Alternation Display of being undertaken by the time-division mode among the 11 step S111.Then, this process is got back to the second step S102.

As indicated above, each KTU key telephone unit 2 and 3 has the display unit 26 of single file viewing area.The combination of the every pair of subscriber's line number and out telephone number automatically is presented on the single file viewing area by the time-division mode.By this structure, in the voice communication of carrying out other incoming call or communication process, judge whether to receive urgent call easily as new incoming call.In this case, can confirm easily when combining at subscriber's line number and out telephone number with this urgent call.

In display unit 26, subscriber's line number and out telephone number press the single file demonstration by the time-division mode.Therefore, can reduce the volume of display unit 26, and reduce cost.In other words, said structure has avoided adopting large-scale and expensive display unit.

With reference to Fig. 4, the KTU key telephone unit 2A of second embodiment of the invention or 3A are similar to device shown in Figure 2 in structure and operation, just function key 30 is attached on the controller 29a, has replaced timing circuit shown in Figure 2 24, and what this button service unit 1 can be with shown in Fig. 1 is identical.

In Fig. 2, KTU key telephone unit 2A shown in Fig. 4 or 3A have input/output interface circuit 20, telephone circuit 21, microphone 22, loud speaker 23, storage area 25, display unit 26, keyboard 27, luminous component 28 and hard disc apparatus 40.

In addition, function key 30 can be operated and is used for providing specific number to control section 29a, and control section 29a is used for handling this specific number by described mode hereinafter.Much less, the 29a of control section shown in resemble shown in Fig. 2 on display unit 26, show a plurality of subscriber's lines number and a plurality of out telephone numbers by the time-division mode.This in the example shown demonstration can be finished by handling keyboard 27 and function key 30.

With reference to Fig. 5 and in conjunction with Fig. 4, specifically describe be connected with button service unit 1 the KTU key telephone unit 2A of execution or the operation of 3A below.Shown in KTU

key telephone unit

2A or 3A operation the KTU key telephone unit 2 or 3 with shown in Figure 2 is identical basically.Specifically, each subscriber's line of an incoming call number (L1-Ln) and each out telephone number send to KTU

key telephone unit

2A or 3A according to the form of subscriber's line data-signal and out telephone number data signal from button service unit 1.This striking out telephone number is notified by public switched telephone network.

Subscriber's line data-signal and out telephone number data signal all are stored in storage area 25 and the hard disc apparatus 40, by handling keyboard 27 data-signal that is stored in the storage area 25 are shown on the display unit 26 by the time-division mode.

On display unit 26 when explicit user line number and out telephone number, at first in each KTU

key telephone unit

2A and 3A, press function key 30 to start show process, shown in the first step S201 as shown in Figure 5, and display unit 26 placed display mode, shown in the second step S202.

In the example shown, keyboard 27 has a plurality of first circuit keys to n bar subscriber's line L1-Ln that correspond respectively to.In this case, control section 29a monitors the signal of pressing from each circuit key transmission, and judges whether that at step S203 one of them circuit key is pressed.If be pressed without any the circuit key, this control section 29a does not obtain to press signal, then keeps current display data signal constant, shown in the 4th step S204.Then, turn back to the second step S202 from the 4th step S204.Otherwise, enter the 5th step S205 from third step S203, in the 5th step S205, judge whether to be stored in storage area 25 corresponding to the subscriber's line of the circuit key of pressing (L1-Ln) number and out telephone number.Whether in other words, control section 29a detects has display data signal to be stored in the address of distributing to the circuit key of pressing in the storage area 25.

If in storage area 25, do not store display data signal, then in the 6th step S206, keep current video data to remain unchanged, and continue to show.If in storage area 25, stored new display data signal, then in the 7th step S207, they are shown in the display unit 26 and replace current display data signal by the time-division mode.This new data shows signal may be to be contained in the subscriber's line number in the incoming call and the combination of out telephone number.

In other words, under control section 29a control, new display data signal is read from storage area 25, sending to display unit 26, and replaces the current data shows signal.Therefore, in the 7th step S207, current and new display data signal is switched by the time-division mode, and by in conjunction with the mode Alternation Display described in first embodiment on display unit 26.

Then detect the 8th step S208 that whether has on-hook signal after each the 6th and the 7th step S206 and the S207.After this, at the 9th and the tenth step S209 and S210 demonstration on the display unit 26 is handled and stopped to this on-hook signal, this is similar with S111 with the 11 step S110 to the shown in Figure 3 the tenth.

Therefore, can be in the second embodiment of the invention KTU key telephone unit by operating on the display unit 26 of KTU

key telephone unit

2A or 3A being shown a plurality of subscriber's lines number and a plurality of out telephone numbers.By this structure, each out telephone number that arrives every subscriber's line can be easy to detect in each incoming call.So just can react to each incoming call fast and selectively.

In addition, as in conjunction with described in first embodiment, the combination of the every pair of subscriber's line number and out telephone number shows along the single file viewing area on the display unit 26 by the time-division mode.Therefore, can reduce the size of display unit 26, and get rid of and adopt large-sized display unit.Thereby reduced the KTU key telephone unit cost.

With reference to Fig. 6, the KTU key telephone unit 2B of third embodiment of the invention or 3B are similar to KTU key telephone unit shown in Figure 2 in structure and operation.Just shown in comprise VODER 45 among KTU key telephone unit 2B or the 3B.Specifically, receiver, timing circuit 24, storage area 25, display unit 26, keyboard 27, luminous component 28 and hard disc apparatus 40 that 2B of KTU key telephone unit shown in or 3B have input/output interface circuit 20, telephone circuit 21, are made of microphone 22 and loud speaker 23.

In addition, the VODER 45 in KTU key telephone unit 2B or 3B is connected to volume controller VR controlling the volume of synthetic audio signal, and is connected to loudspeaker 46 to produce synthetic audio signal.As shown in Figure 6, VODER 45 is coupled with control section 29b, this control section 29b can operate this VODER 45 of control, makes a plurality of subscriber's lines number and a plurality of out telephone numbers be contained in the incoming call produce by the mode of time-division mode with synthetic audio signal.In addition, the 29b of control section shown in be used to resemble in other embodiments on display unit 26, show the combination of every pair of subscriber's line number and out telephone number by the time-division mode.Therefore button service unit 1 can, can omit in the figure with shown in Figure 1 identical.

At first, in conjunction with KTU key telephone unit 2B shown in Fig. 6 or 3B its operating process is described briefly.Similar to the KTU key telephone unit 2 or 3 shown in Fig. 2, be contained in a plurality of subscriber's lines number in the incoming call and a plurality of out telephone numbers by by time-division mode Alternation Display on the display unit 26 of KTU key telephone unit 2B shown in Fig. 6 or 3B.In this case, the combination of the every pair of subscriber's line number and out telephone number, the single file viewing area on the display unit 26 shows automatically.

In the example shown, this subscriber's line number and out telephone number sequentially are sent to VODER 45 with the form slave controller 29b of data-signal, and are converted to audio signal sequence by this VODER 45.This audio signal sequence carries out volume control by volume controller VR, sends to loudspeaker 46 then to produce as audio output signal.

Although VODER 45 and loudspeaker 46 combine with KTU key telephone unit 2 or 3 shown in Figure 2 in Fig. 6,, they also can be contained among KTU key telephone unit 2A shown in Fig. 4 or the 3A.

KTU key telephone unit 2B shown in Fig. 6 or 3B can be by the time-division mode with any frequency single file viewing area each subscriber's line of Alternation Display on the display unit 26 number and out telephone numbers.In addition, each subscriber's line number and out telephone number are all notified with the form of audio signal.Because this notice undertaken by voice-frequency signalling, so even when display unit 26 sizes very little, and when being not easy to read, also distinguish each subscriber's line number and out telephone number easily.

With reference to Fig. 7, the operating process of fourth embodiment of the invention KTU key telephone unit will be described below.Although hypothesis the 4th embodiment can be applied to the KTU key telephone unit shown in Fig. 2 in the following description, the 4th embodiment KTU key telephone unit structurally to Fig. 2,4 similar with the KTU key telephone unit shown in 6.

Now, each out telephone number sequentially is stored in the hard disc apparatus 40.Then, by to the operation of keyboard 27 and under the control of control section 29, the name corresponding to the outbound user of out telephone number also is stored in the hard disc apparatus 40.This name and corresponding number are rearranged, and sort (for example, pressing alphabetic order) by predetermined order, and can some the time retrieve out to dial automatically.

In Fig. 7 automatically dialing mode can be in first step S301 by to the input operation of keyboard 27 and under the control of controller 29, be provided with, in the second step S302, keyboard 27 is carried out manual operation to show whether retrieve an outbound user and a plurality of outbound user.In other words, by in the second step S302, utilizing keyboard 27 to carry out input operation to retrieve an outbound user and a plurality of outbound user.In the example shown, suppose the second step S302 by full name of certain outbound user of keyboard 27 input or all letter and import bebinning characters or first character to retrieve a plurality of outbound users with retrieval this single outbound user by keyboard 27.When only exporting bebinning character, can detect a plurality of out telephone number corresponding to the determined outbound user of this bebinning character.

When sending this retrieval indication from keyboard 27 when retrieving a plurality of outbound user, under the control of control section 29, on display unit 26, show outbound user's name and corresponding out telephone number (third and fourth step S303 and S304).In this case, this name and/or corresponding out telephone number can be used as piece image and show, and can be according to the volume screen indication of being sent by user or user, and the volume screen shows on display unit 26.In the 5th step S305, control section 29 judges whether to send the indication of volume screen from the user, if send the indication of volume screen, then enter the 6th step S306 from the 5th step S305, in the 6th step S306, the image that is shown on the display unit 26 is rolled up screen, to select required outbound user's name and corresponding out telephone number.In the 7th step S307, select required outbound user's name and corresponding out telephone number, and show at display unit 26.

Then, in the 8th step S308, judge whether to send automatic dialing indication from keyboard 27 by control section 29.

On the other hand, indicate, with the single outbound user of retrieval in the second step S302 from the retrieval that keyboard 27 sends.In this case, carry out retrieval process and show at the 9th and the tenth step S309 and S310 and handle, to finish the required single outbound user's of on display unit 26 demonstration process.After this, behind the tenth step S310, follow the 8th step S308, as shown in Figure 7.

Carry out under the control of control section 29 after the 8th step S308, control section 29 is handled dialing indication automatically and is determined in the PB system and corresponding to required outbound user's dtmf signal (the 11 step S311) to be created in.In the 12 step S312, this dtmf signal sends to button service unit 1 by input/output interface circuit 20, and finishes processing procedure in conjunction with the indication of should dialling automatically.

This dtmf signal of button service unit 1 response shown in Fig. 1, and this dtmf signal by expanded circuit 14 or 15, commutation circuit 16, from subscriber line circuit l1-ln selected one and from subscriber's line L1-Ln selected one be sent to public switched telephone network.As a result, required outbound user is used as required user and is connected to this user.Therefore, between them, can begin telephone talk.

Then, control section 29 control timing circuits 24 are with Measuring Time (the 13 step S313), and the demonstration (ten four step S314) of interruption on display unit 26 after the process preset time.Thereby process finishes.

In the KTS (key telephone system) in the present invention first to fourth embodiment, a plurality of out telephone number that receives as incoming call by public switched telephone network number is shown on the display unit of KTU key telephone unit automatically or manually by time-division mode and a plurality of subscriber's line.The every pair of out telephone number and subscriber's line number combine can by the form notice of synthetic audio signal and by time-division mode single file be shown on the display part.As a result, can increase the feasibility of this KTS (key telephone system), thereby and because this display unit size is less can reduce cost.

In addition, when hard disc apparatus is contained in the KTU key telephone unit and store each out telephone number, can carry out automatic dialing.By this structure, can in hard disc apparatus, list phone directory automatically, and can easily read by keyboard operation.This structure has improved feasibility effectively.

Although present invention is described in conjunction with several embodiment till now, can also easily implement the present invention by various other methods for the professional in this area.For example, can on display unit, show each out telephone number and do not show the Any user line number, and, not necessarily always show by the time-division mode.

Claims

1, a kind of can be in conjunction with the public switched telephone network executable operations to receive the KTS (key telephone system) as the incoming call that comprises out telephone number of sending from the outbound user, it is characterized in that, this KTS (key telephone system) comprises a button service unit that is connected with a plurality of subscriber's lines and a KTU key telephone unit that is connected with this button service unit, and this KTU key telephone unit comprises:

One display unit; And

One control section, this control section are connected to this button service unit, and are provided at a plurality of out telephone number that sends on many subscriber's lines to this display unit, to show a plurality of out telephone numbers on this display unit.

2, KTS (key telephone system) according to claim 1, every subscriber's line has a line number, it is characterized in that control section sequentially number sends to display unit to each subscriber's line to show each line number and each out telephone number on this display unit.

3, KTS (key telephone system) according to claim 2 is characterized in that, described display unit shows each out telephone number and each line number by the time-division mode.

4, KTS (key telephone system) according to claim 1, it is characterized in that, when receiving incoming call by every subscriber's line, this button service unit sequentially selects a plurality of subscriber's lines to send to this KTU key telephone unit with the out telephone number each incoming call sequentially.

5, KTS (key telephone system) according to claim 4 is characterized in that, when receiving incoming call by every subscriber's line, this button service unit also sequentially sends to this KTU key telephone unit to each line number.

6, KTS (key telephone system) according to claim 3 is characterized in that, the control section of this KTU key telephone unit comprises:

One is used for each line number and out telephone number are automatically sent to by the time-division mode circuit of display unit.

7, KTS (key telephone system) according to claim 3 is characterized in that, the control section of this KTU key telephone unit comprises:

One is used for each line number and out telephone number are sent to by the time-division mode manual operation element of this display unit.

8, KTS (key telephone system) according to claim 1 is characterized in that, this display unit has the viewing area that is used for showing the out telephone number of this incoming call in delegation.

9, KTS (key telephone system) according to claim 1 is characterized in that, this KTU key telephone unit comprises the VODER that is connected with this control section and responds this output telephone number to produce the audio signal of this striking out telephone number of expression.

10, KTS (key telephone system) according to claim 9 is characterized in that, this line number is imported this VODER sequentially to produce line number and the out telephone number as audio signal.

11, KTS (key telephone system) according to claim 1 is characterized in that, this KTU key telephone unit comprises and is used for sequentially storing each out telephone number and corresponding to the outbound user's of this striking out telephone number memory cell.

12, KTS (key telephone system) according to claim 11 is characterized in that, this memory cell also store the incoming call of following out telephone number that received the line number of circuit of process.

13, KTS (key telephone system) as claimed in claim 1, it is characterized in that, except described KTU key telephone unit, this KTS (key telephone system) also comprises at least one KTU key telephone unit, and each KTU key telephone unit in described KTU key telephone unit and described at least one KTU key telephone unit comprises:

One display unit; And

One control section, this control section is connected to this button service unit, and a plurality of out telephone number that on display unit provides by many subscriber's lines, sends, with on this display unit to show a plurality of out telephone numbers and a plurality of line number by the time-division mode.

14, KTS (key telephone system) according to claim 13 is characterized in that, each KTU key telephone unit also comprises:

Be used for ringing tone signal between button service unit and the KTU key telephone unit and voice signal are carried out the input/output interface circuit that I/O is handled;

One has the receiver of microphone and loud speaker;

One is connected to the telephone circuit of this control section, this receiver and this input/output interface circuit, and it is used under the control of control section, transmission/reception one transmission/received speech signal between this receiver and this input/output interface circuit; And

One is used for Measuring Time to show the timing circuit of a plurality of out telephone numbers and a plurality of line numbers by the time-division mode on display unit.

15, KTS (key telephone system) according to claim 14 is characterized in that, this KTU key telephone unit also comprises:

One has and is used for manually indicating the keyboard that shows a plurality of line numbers and a plurality of out telephone numbers on this display unit by the time-division mode.

16, KTS (key telephone system) according to claim 15 is characterized in that, this keyboard selects one of them line number and out telephone number to be shown on this display unit between a plurality of line numbers and a plurality of out telephone number.

17, KTS (key telephone system) according to claim 14 is characterized in that, this KTU key telephone unit also comprises:

One is used for the memory cell that storage package is contained in each out telephone number of incoming call; And

Be used for automatically reading the auto-dial unit of each out telephone number from this memory cell.

18, KTS (key telephone system) according to claim 14 is characterized in that, this KTU key telephone unit also comprises:

One is connected to this control section and responds a plurality of line numbers and a plurality of out telephone number is used for they are synthesized the VODER of an audio signal.

19, KTS (key telephone system) according to claim 14 is characterized in that, this button service unit comprises:

A plurality of subscriber line circuits that are connected respectively to described each subscriber's line;

A plurality of each subscriber line circuit that are connected to are used for detecting the telephone number detector that sends and be contained in the out telephone number of incoming call by subscriber's line;

A plurality of extension telephones that are connected to this KTU key telephone unit;

One is used for selectively being connected to form the commutation circuit of the interface channel between them between subscriber line circuit and expanded circuit; And

Be used to control this commutation circuit to form the controller of interface channel.