JP2001069539A - Direct-in dial control method and key telephone system having direct-in dial control function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically decide a circuit that is captured according to an originating dial number in an abbreviated dial originating mode by converting an additional dial number stored in a 2nd abbreviated dial memory into a PB signal and automatically transmitting the PB signal to the terminating side. SOLUTION: At a calling side, a line is captured and then dial tone is heard from the circuit. Then the data of a 1st abbreviated dial memory 15 are converted into PB signals by a PB signal transmitter circuit 8 and transmitted to the circuit via a TDSW circuit 7, a DA/AD converter circuit 6, a 2-wire/4- wire converter circuit 4 and a relay 2. The circuit side transmits a terminating signal to the called side. When the called side makes a primary reply, the circuit side transmits a polarity inverting signal to the calling side. When the calling side receives the polarity inverting signal, the data of a 2nd abbreviated dial memory 16 are converted into PB signals by the circuit 8 and transmitted to the called side via the circuits 7, 6, 5 and 4 and the relay 2 to proceed to a calling state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to direct in-dial control, and more particularly to a direct in-dial control method and a key telephone apparatus with a direct in-dial control function for improving the operability of a caller and / or a called party. .

[0002]

2. Description of the Related Art Conventionally, direct in dial (hereinafter referred to as D)
The abbreviated dialing to the line is realized by searching a memory provided inside whether or not the abbreviated number is a DID abbreviated number.

For example, Japanese Patent Application Laid-Open No. 60-100863 describes a shortened dial system in the DID system. FIG. 9 is a block diagram showing an example for realizing a conventional speed dial to a DID line. By the transmission register 103 and the special number identification device 104,
It identifies that it is a speed dial, and transfers the identification result to the central controller 105. Upon receiving the identification result, the central control unit 105 determines whether or not the corresponding number information is stored in the DID abbreviated number storage device 106. If the corresponding number information is stored, the corresponding number information is transmitted via the automatic exchange device 102. The office line number and the destination extension number are transmitted to the line 101.

[0004] Conventionally, it has been possible to set a program of a CPU unit when a password corresponding to a PB signal matches after a primary response.

[0005] For example, Japanese Patent Application Laid-Open No. 63-039300 discloses a remote programmed key telephone apparatus. FIG. 10 is a block diagram showing an example for realizing a conventional remote programmed key telephone apparatus. When an external line is connected by the central office unit 202 and a primary response by direct in-dial is performed, and a personal identification number based on a PB signal is detected by a PB signal receiving circuit 201A built in the remote program unit 201, a preset personal identification number is obtained. If they match, the speech synthesis circuit 201B
Sends a message to the telephone 205 via the telephone unit 204 that the program can be set.

Conventionally, a method of using data stored in a memory has been used as a means for displaying on a display of a telephone.

For example, Japanese Patent Laying-Open No. 02-055496 discloses a method of displaying the telephone number of a caller without responding to an incoming DID call. FIG. 11 is a block diagram showing an example for realizing a conventional method for displaying the telephone number of a caller. The called side is the line unit 301
And a PB signal is received by the PB signal receiving circuit 302, and the CPU unit 304 and the telephone unit 306 are connected.
, The telephone number is displayed on a display (not shown) of the telephone 307. The telephone number displayed on the display (not shown) of the telephone set 307 on the called side is obtained by using the data in the local telephone number memory 305 on the calling side as the tone circuit 30.
3 uses a signal transmitted by a PB signal.

[0008]

Problems to be Solved by the Invention JP-A-60-1008
The prior art disclosed in Japanese Patent No. 63 has the following problems. A first problem is that a line number and a destination extension number are continuously transmitted. The reason is that there is no means for confirming that the destination device has made a primary response, and the timing for dialing the destination extension number after the primary response is not specified. The second problem is that extra memory is required. The reason is that it is necessary to store the DID abbreviated number in a separately provided memory in order to identify the abbreviated number for the DID access.

The prior art disclosed in Japanese Patent Application Laid-Open No. 63-039300 has the following problems. The first problem is that it cannot be used for purposes other than program setting.
The reason is that the program setting of the CPU unit 203 is performed via the remote program unit 201 after the password is normally received. Another reason is that means for receiving a plurality of personal identification numbers is not provided.

The prior art disclosed in Japanese Patent Application Laid-Open No. 02-055496 has the following problems. The first problem is that the number displayed on the display is only the telephone number of the caller. The reason is that the number displayed on the display is
This requires a memory for storing the telephone number of the own system stored in the calling system. A second problem is that the telephone number displayed on the display of the telephone cannot be used for calling. The reason is that there is no means for using the displayed telephone number for other purposes.

The present invention provides a direct in-dial control method and a key telephone apparatus with a direct in-dial control function that solve the above problems.

[0012]

In order to solve the above-mentioned problems, a first aspect of the present invention provides a polarity reversal detection circuit for monitoring the polarity of a line, a PB signal transmission circuit for transmitting a PB signal, and a PB signal transmission circuit. A direct in-dial control method for performing direct in-dial by connecting a key telephone device including a PB signal receiving circuit for receiving a line to a line, wherein a line to be captured is set as a table, A first speed dial memory for registering a number;
A second speed dial memory for registering an additional dial number is provided in the key telephone device, and at the time of calling, the calling side refers to the captured outside line table to capture a line and listen to a dial tone from the line, Converting the telephone number of the other party in the first speed dial memory into a PB signal and transmitting the PB signal to the line, the line transmitting an incoming signal to a called side, and the called side receiving a primary response The line sends a polarity reversal signal to the calling side, and the calling side detects the polarity reversal signal with the polarity reversal detection circuit, and stores the additional dial number in the second speed dial memory. PB
The signal is converted to a signal and automatically transmitted to the called side.

[0013] Further, the invention according to claim 2 is a multi-function telephone including a first additional dial memory for storing the additional dial number, a second additional dial memory for registering the function number, a display, and a telephone. A telephone number memory for storing a number, the key telephone device further comprising: a telephone number memory for detecting the additional dial number after receiving the primary response at the time of receiving a call, and storing the additional dial number in the first additional dial memory. And
When the telephone number display function number registered in advance in the second additional dial memory matches the additional dial number, the telephone number is received from the calling side by a PB signal, and this telephone number is stored in the telephone. The telephone number is stored in a number memory, and the telephone number is displayed on a display of the multifunction telephone.

Further, according to a third aspect of the present invention, when the telephone number is displayed on the display of the multifunctional telephone, the user goes off-hook, and the telephone number and the captured outside line table stored in the telephone number memory are stored. , If there is a matching number, the external line number is selected according to the captured external line table to automatically capture the corresponding line, and the PB signal according to the telephone number stored in the telephone number memory is converted to the PB signal. The transmission circuit automatically transmits the data, and when the called party answers, the telephone number memory is erased and the communication state is set.

Further, the invention of claim 4 further comprises a transfer destination dial memory for storing a telephone number based on a PB signal relating to an external line transfer function number, wherein the key telephone device further comprises: After responding, the additional dial number is detected and stored in the first additional dial memory, and the external line transfer function number and the additional dial number which are registered in the second additional dial memory in advance. If the numbers match, the telephone number based on the PB signal from the calling side is received, and this telephone number is stored in the transfer destination dial memory. An outside line number according to the table is captured and transmitted to the telephone number received as a PB signal.

Further, according to the present invention, there is provided a polarity inversion detecting circuit for monitoring the polarity of a line, and a PB for transmitting a PB signal.
A direct in-dial control method for performing direct in-dial by connecting a key telephone device including a signal transmission circuit and a PB signal receiving circuit for receiving a PB signal to the line, wherein the line to be captured is set in a table. An external line table, a multifunction telephone including a display, a first transmission memory for storing a first dial number before pressing a # button of the multifunction telephone, and a second transmission memory after pressing a # button of the multifunction telephone The key telephone device is provided with a second transmission memory for storing a dial number of the multi-function telephone, and when a manual dial call is made from the multi-function telephone, the calling side captures an arbitrary line at the time of calling, and the calling side After listening to the dial tone from the line, pressing the first dial, pressing the # button of the multi-function telephone and pressing the second dial, the first dial Dial numbers are stored in the first outgoing memory, the second dial numbers are stored in the second outgoing memory, and the first dial numbers in the first outgoing memory are stored as PB signals on the line. Outgoing, the line sends an incoming signal to the called side, and upon receiving the polarity reversal signal from the line after the called side has responded primary, the second
The second dial number in the outgoing call memory is transmitted to the line as a PB signal to shift to a call state.

Further, according to the present invention, a modem signal detecting circuit for receiving a caller number by a number display when an incoming signal is received, a caller number memory for storing the received caller number, and an outside line transfer permission. An external line transfer permission memory for storing a telephone number based on a PB signal related to an external line transfer function number, and a voice conversion circuit for converting a number into a voice. At the time of receiving the call, on the called side, the modem signal detection circuit receives a caller number by a number display, stores the caller number in the caller number memory, and after the primary response, A first additional dial memory that receives a PB signal from a calling side and stores the additional dial number; By comparing the pressure dial memory, when the extra digits is function number for external transfer, a state waiting PB signal from a caller, PB
Receiving a telephone number by a signal, storing it in the transfer destination dial memory, permitting or prohibiting external line transfer by comparing the caller number stored in the caller number memory with the external line transfer permission memory, When the transfer destination is in a call state or no answer, the telephone number stored in the transfer destination dial memory is converted into voice by the voice conversion circuit.

Further, according to the present invention, a polarity inversion detecting circuit for monitoring the polarity of a line, an incoming call detecting circuit for detecting the presence or absence of an incoming signal from the line, a relay for switching a communication path, A line capture circuit for capturing, a two-wire / four-wire conversion circuit for converting a signal into a transmission system and a reception system, and a DA / for converting a digital signal and an analog signal mutually.
An AD conversion circuit, a TDSW circuit forming a communication path,
A PB signal transmitting circuit for transmitting the B signal, a PB signal receiving circuit for receiving the PB signal, a first additional dial memory for storing the detected additional dial number, and a second additional dial memory for registering the function number; And a transfer destination dial memory for storing a telephone number based on a PB signal related to a function number for external line transfer, and a telephone number based on a PB signal related to a telephone number display function number. A key telephone device having a telephone number memory, a multi-function telephone including a display, and a control unit for performing control such as activating the TDSW circuit and the like. 1
, And a second speed dial memory for registering an additional dial number to be additionally transmitted.

Further, in the invention according to claim 8, the first speed dial memory and the second speed dial memory are replaced with a first number storing a dial number before pressing the # button of the multi-function telephone. It further comprises a transmission memory and a second transmission memory for storing a dialed number after the # button of the multi-function telephone is pressed.

Further, the invention according to claim 9 is a modem signal detecting circuit for receiving a caller number by a number display at the time of an incoming call, a caller number memory for storing the received caller number, and a number for permitting outside line transfer. And a voice conversion circuit for converting the telephone number stored in the destination dial memory into voice.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A: First Embodiment FIG. 1 is a block diagram showing a first embodiment of the present invention. Referring to FIG. 1, when the key telephone device 30 is in a standby state, a polarity reversal detection circuit 1 for monitoring the line polarity, a relay 2 for switching a communication path, and an incoming call detection circuit for detecting the presence or absence of an incoming signal are provided at the line end. 3 is connected. When an automatic response or a response operation by the multi-function telephone 17 is performed, the relay 2 is switched, and the line capturing circuit 4 is connected to the line to form a DC loop.

For voice and PB signals, a two-wire / four-wire conversion circuit 5 for converting signals into a transmission system and a reception system, a DA / AD conversion circuit 6 for mutually converting digital signals and analog signals, The data is transmitted to and received from a PB signal transmitting circuit 8, a PB signal receiving circuit 9, and a multi-function telephone 17 via a TDSW (time division communication path switch) circuit 7 that forms a path.

The calling side refers to the first abbreviated dial memory 15 when making abbreviated dialing, and refers to the second abbreviated dialing memory 16 when making an additional dial, and sends the corresponding dial to the PB signal transmitting circuit 8. Sent from.

On the called side, after the primary response, the PB
The PB signal received by the signal receiving circuit 9 is stored in the first additional dial memory 10, collated with the second additional dial memory 11, and when they match, a specific function is realized.
In order to realize a specific function, an external line table 12, a destination dial memory 13, and a telephone number memory 14 are provided.

Next, the speed dial calling operation of the block diagram of FIG. 1 will be described with reference to FIG. When calling using a speed dial to the called terminal to which the DID is set, first, the first speed dial number of the multi-function telephone 17 is selected, and then the second speed dial number is selected and off-hook. TD according to the control of the control unit 18
The SW circuit 7, the DA / AD conversion circuit 6, the 2-wire / 4-wire conversion circuit 5, and the line capture circuit 4 are activated, and the relay 2 is switched to the upper stage to capture the line. The line to be captured is stored in the first speed dial memory 15 in the captured external line table 1.
It is determined by referring to whether there is a registered number in 2.

Referring to FIG. 2, after the calling party has seized the line, it listens to a dial tone from the line side. From this state, the data in the first abbreviated dial memory 15 is converted into a PB signal by the PB signal transmission circuit 8, and the TDSW circuit 7, the DA / AD conversion circuit 6, the 2-wire / 4-wire conversion circuit 5,
The signal is transmitted to the line via the line capturing circuit 4 and the relay 2. The line side sends the incoming signal to the called side. When the called side receiving this incoming signal makes a primary response, the line side sends a polarity inversion signal to the calling side. When the calling side receives this polarity reversal signal, the data in the second abbreviated dial memory 16 is converted into a PB signal by the PB signal transmission circuit 8 on the calling side, and the TDSW circuit 7, the DA / AD conversion circuit 6, the 2-wire / The signal is transmitted to the called side via the four-wire conversion circuit 5, the line capture circuit 4, and the relay 2, and shifts to a call state.

Next, the incoming call operation of the block diagram of FIG. 1 will be described with reference to FIG. When the incoming signal is detected by the incoming detection circuit 3, the relay 2 is switched to the upper stage, and the line is automatically captured by the line capturing circuit 4. This operation is a primary response, and an additional dial standby state is set. If no additional dial is detected, the line is automatically disconnected after a lapse of a predetermined time (steps A1, A2, A4, A5).
When the additional dial is detected, the telephone number of the additional dial is stored in the first additional dial memory 10 (step A3), and compared with the second additional dial memory 11 in which the telephone number display function number is already registered (step A3). Step A
6). When the number matches the telephone number display function number, the apparatus enters a state of waiting for a PB signal from the caller, and upon receiving a telephone number based on the PB signal (step A7), stores the telephone number in the telephone number memory 14 (step A8). . When the telephone number is stored in the telephone number memory 14, the telephone number is displayed on the display of the multifunctional telephone 17 (step A).
9).

A sequence when the user goes off-hook while a telephone number is displayed on the display of the multi-function telephone 17 will be described with reference to FIG. When the telephone number is displayed on the display of the multi-function telephone 17 (step A101) and off-hook (step A102), the data such as the telephone number stored in the telephone number memory 14 and the captured outside line table 12 are referred to. Then, if there is a matching number, an outside line number according to the table of the outside line acquisition table 12 is selected and automatically acquired (step A1).
03). Next, a PB signal according to data such as a telephone number stored in the telephone number memory 14 is automatically transmitted from the PB signal transmission circuit 8 (step A104). When the called party responds, the telephone number memory 14 is erased and the state shifts to the talking state (steps A105, A107, A108).
If the called side is in a talking state or no answer, the line is temporarily disconnected by the relay 2 and after a certain time has elapsed, the line capturing operation is repeated (steps A105 and A106).

Next, the external line transfer operation in the block diagram of FIG. 1 will be described with reference to FIG. After the primary response, after receiving the additional dial and storing the data in the first additional dial memory 10, when comparing with the second additional dial memory 11 in which the function number for outside line transfer is already registered, the first additional dial memory 10 Is stored in the destination dial memory 13, when the telephone number is received from the calling party, the data is stored in the transfer destination dial memory 13. External line table 12
With reference to, if there is a match between the telephone number by the PB signal and the number shown in the captured outside line table 12, the outside line number according to the table of the captured outside line table 12 is captured,
Make a call to the telephone number received as a PB signal (step A
10, A11, A12).

The external line transfer operation in the block diagram of FIG. 1 will be described with reference to FIG. When the transfer destination is in a call state or no answer (step A201), the number stored in the transfer destination dial memory 13 is transmitted to the caller using the PB signal transmission circuit 8 as a PB signal. The PB dial is detected (step A202), and when the calling side receives this PB signal (step A203), this number is stored in the telephone number memory 14 (step A204). When a number such as a telephone number is stored in the telephone number memory 14,
The telephone number is displayed on a display (not shown) of the multi-function telephone 17 (step A205). B. Second Embodiment FIG. 6 is a block diagram showing a second embodiment of the present invention. The key telephone device 31 has the same configuration as that of the key telephone device 31, except that the first speed dial memory 15 and the second speed dial memory 16 shown in FIG. 1 are replaced with a first transmission memory 19 and a second transmission memory 20, respectively. With this configuration, when a # is added between telephone numbers when a manual dial call is made from the multi-function telephone 17, the dial before pressing the # button is stored in the first transmission memory 19, The dial after pressing the button is stored in the second transmission memory 20.

FIG. 7 is a sequence diagram of the manual dialing operation according to the block diagram of FIG. Since the capturing of the line and the like are common to the first embodiment, the parts that are not common will be described. After the line is captured, the dial stored in the first transmission memory 19 is transmitted to the line as a PB signal, and upon receiving a polarity reversal signal from the line after the primary response of the called side, the dial stored in the second transmission memory 20 is restored. The signal is transmitted to the line as a PB signal, and shifts to a talking state. C. Third Embodiment FIG. 8 is a block diagram of a third embodiment for implementing the present invention. The key telephone device 32 includes a modem signal detection circuit 21, a caller number memory 22, and an outside line transfer permission memory 2.
3. An audio conversion circuit 24 is added to the block diagram of FIG.

Referring to FIG. 8, by connecting the modem signal detecting circuit 21 and the caller number memory 22 to the controller 18, the modem signal detecting circuit 21 receives the caller number from the number display at the time of an incoming call and receives the caller number. This caller number is stored in the caller number memory 22. After the primary response, the PB signal is received, the first additional dial memory 10 storing the additional dial and the already registered second additional dial memory 11 are compared, and this additional dial is a function number for outside line transfer. At this time, the system is in a state of waiting for a PB signal from the caller. When a telephone number is received by the PB signal, the telephone number is stored in the transfer destination dial memory 13. At this point, by comparing the caller number stored in the caller number memory 22 with the outside line transfer permission memory 23, outside line transfer can be permitted or prohibited.

Further, by providing a voice conversion circuit 24 for converting the number stored in the transfer destination dial memory 13 into voice, if the transfer destination is busy or does not answer after the external line transfer, the transfer destination dial memory 13 Number to voice conversion circuit 2
Then, the caller is converted to voice and the caller is notified of the transfer destination number by voice.

[0034]

As described above, the first embodiment of the present invention has the following effects.

The first effect is that when abbreviated dialing is performed, the line to be captured is automatically determined according to the dialing number. In addition, after the called party makes a primary response, the additional dial registered in the speed dial can be automatically dialed. For example, if the voice mail access number and the personal mailbox number are registered respectively, when making a call, if the voice mail access number is selected, a list of personal mailbox numbers registered in the access number appears. If one of the numbers is selected, a call can be made so that the call can be automatically dialed without checking the personal mailbox number. The reason is that the method of automatically selecting the line to be originated from the outside line table and the addition of a speed dial memory for additional dialing to the calling side allow the polarity of the line to be inverted when the called side answers. Is detected, and a method of transmitting the data of the additional dial memory to the PB signal is provided.

The second effect is that when the called party receives a specific additional dial after the primary response, the additional dial number can be displayed on the display of the multi-function telephone. This means that an outside line can be automatically selected and dialed. The reason is that a method is provided in which a telephone number memory is provided, and when data is stored in the telephone number memory, the data is sent to a display of the multifunction telephone.

A third effect is that when the called party receives a specific additional dial after the primary response, it can automatically select an external line for transfer in accordance with the additional dial number and make a call.

The reason is that a transfer destination dial memory and a captured outside line table are provided, the outside line for capture refers to the outside line table for capture, and a method of dialing the transfer destination using the transfer destination dial memory is provided. is there.

The fourth effect is that if the other party is busy or unanswered after the outside line transfer, the telephone number of the transfer destination is sent to the caller by PB.
By returning a signal, the transfer destination number can be displayed on the display of the multi-function telephone, and it can be confirmed that the transfer destination telephone number is correct. The reason is that, when the polarity of the transfer outside line is not reversed, a method of transmitting the telephone number stored in the transfer destination dial memory to the calling party by a PB signal is provided, and the PB signal received by the calling side is transmitted. This is because a means for storing the data in the telephone number memory is provided, and the data stored in the telephone number memory is displayed on the multifunctional telephone.

According to the second embodiment of the present invention, the following effects can be obtained.

The fifth effect is that not only in automatic transmission such as abbreviated dialing but also in manual transmission, an additional dial can be automatically transmitted by recognizing the polarity inversion after the primary response.

According to the third embodiment of the present invention, the following effects can be obtained.

The sixth effect is that not only the permission and prohibition of the outside line transfer can be identified by the data of the first additional dial memory, but also by adding the information of the number display, a stronger transmission restriction can be realized. is there.

A seventh effect is that the telephone number at the time of making a call to the transfer outside line can be confirmed by voice, and that the other party is busy or absent can be confirmed by voice.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 shows a sequence of a speed dial calling operation.

FIG. 3 shows a sequence after the called party has made a primary response.

FIG. 4 is a sequence when a display is provided on the multifunction telephone.

FIG. 5 is a sequence when a calling side receives a PB signal.

FIG. 6 is a block diagram showing a second embodiment of the present invention.

FIG. 7 is a sequence of a manual dialing operation.

FIG. 8 is a block diagram showing a second embodiment of the present invention.

FIG. 9 is a block diagram of a conventional abbreviated dial system using the DID system.

FIG. 10 is a block diagram of a conventional remote programmed key telephone apparatus.

FIG. 11 is a block diagram for realizing a conventional method of displaying a caller's telephone number.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 polarity inversion detection circuit 2 relay 3 incoming detection circuit 4 line capture circuit 5 2-wire / 4-wire conversion circuit 6 DA / AD conversion circuit 7 TDSW circuit 8 PB signal transmission circuit 9 PB signal reception circuit 10 first additional dial memory 11th 2 additional dial memory 12 captured outside line table 13 transfer destination dial memory 14 telephone number memory 15 first abbreviated dial memory 16 second abbreviated dial memory 17 multifunctional telephone 18 control unit 19 first transmission memory 20 second transmission memory 21 modem signal detection Circuit 22 Caller ID memory 23 External line transfer permission memory 24 Voice conversion circuit 30 Key telephone device 31 Key telephone device 32 Key telephone device 101 Line 102 Automatic exchange device 103 Transmission register 104 Special number identification device 105 Central control device 106 DID shortened number storage Apparatus 2 1 Remote Program Unit 201A PB Signal Receiving Circuit 201B Voice Synthesizing Circuit 202 Local Line Unit 203 CPU Unit 204 Telephone Unit 205 Telephone 301 Local Line Unit 302 PB Signal Receiving Circuit 303 Tone Circuit 304 CPU Unit 305 Own System Telephone Number Memory 306 Telephone Unit 307 Telephone

Claims (9)

[Claims] 1. A key telephone apparatus including a polarity inversion detecting circuit for monitoring the polarity of a line, a PB signal transmitting circuit for transmitting a PB signal, and a PB signal receiving circuit for receiving a PB signal, is connected to the line and directly connected to the line. A direct in-dial control method for performing in-dial, comprising: a captured outside line table that stores a line to be captured; a first speed dial memory for registering a telephone number of a destination; and a second speed dial memory for registering an additional dial number. The key telephone device, the calling side captures a line by referring to the captured outside line table at the time of calling, listens to a dial tone from the line, and stores the dial tone in the first speed dial memory. The called party's telephone number is converted to a PB signal and sent to the line, the line sends an incoming signal to the called party, and the called party makes a primary response When the line sends a polarity inversion signal to the calling side, the calling side detects the polarity inversion signal with the polarity inversion detection circuit, and outputs the additional dial number in the second speed dial memory. Is converted into a PB signal and automatically transmitted to the called side. 2. A first additional dial memory for storing the additional dial number, a second additional dial memory for registering a function number, a multifunction telephone including a display, and a telephone number memory for storing telephone numbers. The key telephone apparatus further comprises: after the called party performs the primary response at the time of receiving a call, detects the additional dial number, stores the additional dial number in the first additional dial memory, and stores the second additional dial number. When the telephone number display function number registered in advance in the dial memory matches the additional dial number, the telephone number is received by the PB signal from the calling side, and this telephone number is stored in the telephone number memory. 2. The direct in-dial control method according to claim 1, wherein the telephone number is displayed on a display of the multifunctional telephone. 3. When the telephone number is displayed on the display of the multi-function telephone, the user goes off-hook and matches the telephone number stored in the telephone number memory with the external line table. If there is a number, an external line number is selected according to the captured external line table to automatically capture the corresponding line, and a PB signal according to the telephone number stored in the telephone number memory is automatically transmitted from the PB signal transmitting circuit, 3. The direct in-dial control method according to claim 2, wherein when the called party answers, the telephone number memory is erased to shift to a call state. 4. The key telephone device further comprises a transfer destination dial memory for storing a telephone number based on a PB signal related to an external line transfer function number, and after the called party makes the primary response at the time of receiving the call, When the additional dial number is detected and stored in the first additional dial memory, and the external line transfer function number registered in advance in the second additional dial memory matches the additional dial number, the outgoing call is made. Receiving the telephone number based on the PB signal from the side, storing the telephone number in the transfer destination dial memory, and referring to the captured external line table, if there is a matching number, the external line number according to the captured external line table is obtained. 3. The direct in-dial control method according to claim 2, wherein the call is captured and transmitted to the telephone number received as a PB signal. 5. A key telephone device including a polarity inversion detecting circuit for monitoring the polarity of a line, a PB signal transmitting circuit for transmitting a PB signal, and a PB signal receiving circuit for receiving a PB signal, is connected to the line. What is claimed is: 1. A direct in-dial control method for performing direct in-dial, comprising: a captured outside line table having a table of lines to be captured; a multifunction telephone including a display; and a first dial before pressing a # button of the multifunction telephone. A first dialing memory for storing a number and a second dialing memory for storing a second dialing number after pressing a # button of the multi-function telephone; At the time of calling, the calling side captures an arbitrary line at the time of calling, and the calling side listens to a dial tone from the line and presses the first dial. Presses the # button of the multi-function telephone and presses a second dial, stores the first dial number in the first transmission memory, and stores the second dial number in the second transmission memory. And sends the first dialed number in the first transmission memory to the line as a PB signal, the line transmits an incoming signal to a called side, and the line is transmitted after the called side makes a primary response. Receiving the polarity inversion signal from the second transmission memory,
A direct in-dial control method, wherein the dial number is transmitted to the line as a PB signal to shift to a call state. 6. A modem signal detecting circuit for receiving a caller number by a number display when an incoming signal is received,
A caller number memory for storing the received caller number, an external line transfer permitting memory for storing a number for which external line transfer is permitted, and a transfer destination dial memory for storing a telephone number based on a PB signal related to an external line transfer function number; And a voice conversion circuit for converting a number into a voice. The key telephone device further comprises a modem signal detection circuit for receiving a caller number by a number display on the called side at the time of the call reception. Is stored in the caller number memory, and after the primary response, a PB signal from the calling side is received, and the first additional dial memory storing the additional dial number is stored in the first additional dial memory. When the additional dial number is a function number for outside line transfer, the state is a state of waiting for a PB signal from the caller. , Receiving the telephone number by the PB signal, storing the telephone number in the transfer destination dial memory, and comparing the caller number stored in the caller number memory with the external line transfer permission memory to permit or prohibit the external line transfer. 3. The direct in-dial control method according to claim 2, wherein the telephone number stored in the transfer destination dial memory is converted into voice by the voice conversion circuit when the transfer destination is in a call state or no answer. . 7. A polarity reversal detection circuit for monitoring the polarity of a line, an incoming call detection circuit for detecting the presence or absence of an incoming signal from the line, a relay for switching a communication path, and a line capture circuit for automatically capturing the line. A two-wire / four-wire conversion circuit for converting a signal into a transmission system and a reception system, a DA / AD conversion circuit for mutually converting a digital signal and an analog signal, a TDSW circuit forming a communication path, and a PB A PB signal transmitting circuit for transmitting a signal, a PB signal receiving circuit for receiving a PB signal,
A first additional dial memory for storing the detected additional dial number, a second additional dial memory for registering the function number, a captured external line table having a line to be captured as a table, and a PB relating to the external line transfer function number A multi-function telephone including a transfer destination dial memory for storing a telephone number based on a signal, a telephone number memory storing a telephone number based on a PB signal related to a telephone number display function number, and a display;
A key telephone device having a control unit for performing control such as activating a DSW circuit or the like, comprising: a first speed dial memory for registering a telephone number of a call destination;
A key telephone apparatus with a direct in-dial control function, comprising: a second speed dial memory for registering an additional dial number to be additionally dialed. 8. A first transmission memory for storing a dial number before pressing a # button of the multi-function telephone, instead of the first speed dial memory and the second speed dial memory; 8. The key telephone apparatus with a direct in-dial control function according to claim 7, further comprising a second transmission memory for storing a dial number after pressing a # button of the telephone. 9. A modem signal detecting circuit for receiving a caller number by a number display at the time of an incoming call, a caller number memory for storing the received caller number, and an external line transfer permission memory for storing a number for which external line transfer is permitted. 8. A key telephone apparatus with a direct in-dial control function according to claim 7, further comprising: a voice conversion circuit for converting a telephone number stored in said transfer destination dial memory into voice.