JP2009246633A - Method and system for incoming history registration and for call origination using the registered information - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To originate a call using a caller number in an incoming history without applying any burden to an extension terminal when originating the call to a telephone line via a high-order telephone system while using the incoming history. <P>SOLUTION: When a key telephone master device 1 accepts incoming information from a high-order telephone system 3, the key telephone master device 1 accommodating the high-order telephone system 3 in an outside line and key telephone sets 2A-2N in extension lines, the incoming information contains therein identification information identifying a line class indicating whether a call origination source is a telephone line or an extension line of the high-order telephone system, and the incoming history of each of caller numbers, that the telephone master device accepts the high-order telephone system, is registered together with the identified line class. Therefore, when originating a call to the high-order telephone system 3 via the outside line while using a caller number in the incoming history, the telephone master device 1 watches whether it is a telephone line or an extension line" in the incoming history and determines whether to add an access number in the high-order telephone system 3. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a key telephone system or a key telephone system, and in particular, records a caller number in a history for an incoming call from a host system (PBX / CES), and the caller number recorded in the incoming call history. The present invention relates to a method and a system for incoming call history registration of a telephone main apparatus that makes a call based on, and a call using the registered number.

  If you cannot register the extension / outside line in the incoming call history for incoming calls from a higher system (PBX / CES), you cannot make a call to the correct recipient when you make a call using the caller ID in the recorded incoming call history. . For example, if the office line access code is “0” and the caller number is transmitted with the national number starting from “0”, the first “0” is captured and the next number is transferred to the office line. Since the call is made, the leading number is processed as a local number, resulting in an erroneous connection.

  As a technique for preventing such forgetting to add a local line access code, for example, in Japanese Patent Application Laid-Open No. 05-304564 (Patent Document 1), when receiving an incoming call from an external line connected to an ISDN, the main control unit A specific ringing tone identification code is added to the destination subaddress of the SETUP signal transmitted from the terminal and sent to the terminal of the ISDN interface. Therefore, the terminal transmits the ringing tone selected based on the ringing tone identification code received at the time of the incoming call. Therefore, the telephone user can identify whether the incoming call is an outside line or an extension line by the difference in the ringing tone. The main control unit corresponds to a main unit of a private branch exchange, a key telephone system, or a button telephone device.

  In Japanese Patent Application Laid-Open No. 09-083647 (Patent Document 2), a key telephone is provided with a display for blinking two kinds of colors red / green. A method of blinking green for incoming calls from is disclosed. Therefore, the telephone user can identify whether the incoming call is an outside line or an extension line by the difference in color of the flashing display.

  With this configuration, the main device of the key telephone system or the key telephone system identifies when the incoming call from the upper exchange is from the office line or the extension, Each incoming office line / extension can be notified by a different signal. By this notification, when the higher-level telephone system is a private branch exchange, the extension telephone user adds a call number or access number of the local line at the private branch exchange to the caller ID of the incoming call to the outside, and dials the call. It will take time. By such a procedure, it is possible to prevent erroneous connection with respect to outgoing line transmission.

  However, since it is necessary for the telephone user to recognize the incoming line from the outside line and add the local line access number to the caller ID, not only the telephone user is troubled but also the access number by the user Incorrect dialing is unavoidable, and the problem of making an incorrect connection by calling an extension number to the office line is inevitable.

  As an improvement plan, for example, in Japanese Patent Laid-Open No. 2006-186493 (Patent Document 3), in a key telephone system, a communication terminal is provided with a memory for incoming call history, and the caller is called when the main unit is an incoming line. Send the local access number along with the number. In the terminal, when the caller ID is recorded in the incoming call history memory, the office line access number sent simultaneously is recorded in the memory. Therefore, when the user makes a call using the caller number on the office line in the incoming call history memory, the terminal can transmit by adding the office line access number in front of the caller number. As a result, since the main unit accepts the caller number with the office line access number added, the call can automatically dial the caller number with the station line access number added after the main unit has captured the station line. . In addition, if a station line has already been captured, the main unit discloses that only the caller number is transmitted to that station line.

  However, this technique is also not desirable from the viewpoint of reducing the cost of the terminal because a large number of terminals are burdened with storage addition of the office line access number and its additional dialing.

JP 05-304564 A JP 09-083647 A JP 2006-186493 A

  The problem to be solved is that the terminal has a memory for the incoming call history to record the caller ID with the office line access number added to the incoming call, and the terminal needs to add a dial number when making a call. There is a problem in cost reduction at the terminal.

  The key telephone system or the button telephone system according to the present invention includes a telephone main apparatus and a telephone accommodated in the telephone main apparatus. When a call is made to a local line through a higher-level telephone system using an incoming call history, an extension terminal is used. It is an object to make a call using a caller number in an incoming call history without burdening the caller. Therefore, when the telephone main unit of the button telephone system that accommodates the upper telephone system on the outside line and the telephone on the extension line receives incoming information from the upper telephone system, the originator of the incoming telephone information is the station of the upper telephone system. Including identification information for identifying a line type of a line or an extension, and registering the incoming call history of each caller ID received by the telephone main unit via the host telephone system together with the identification information .

  When the telephone main device receives a call from the telephone for the caller number acquired from the call history from the higher-level telephone system, the identification information attached to the caller number in the call history is acquired. When the identification information is a station line, the station number of the host telephone system is added to the head and the caller number is transmitted.

  That is, this telephone system accommodates the host telephone system on the outside line and the telephone on the extension line. When receiving the incoming call information from the host telephone system, the incoming call history is registered, and the registered information is used for transmission. The incoming call information includes a caller number in advance together with identification information for identifying a line type of a higher-level telephone system station line or extension, and the telephone main unit receives an incoming call. Means for accepting the incoming call information via the host telephone system, means for analyzing the identification information and caller number from the received incoming call information, and the incoming call history of each caller number included in the analyzed incoming call information Means for registering with the identification information.

  Then, the telephone main unit receives means for receiving outgoing information from an extension telephone, means for searching for a connection destination based on the received outgoing information by a caller number in the incoming call history, and searches for the caller number in the incoming call history. If the identification information is an external line connected to the higher-level telephone system, the identification information attached to the caller number in the incoming call history is acquired. In addition, there is provided means for transmitting the caller ID.

  According to the present invention, there is provided a method and system for incoming call history registration and outgoing call using the registered number, in which the telephone main unit receives identification information from the higher-level telephone system as to whether the caller is from the office line or from the extension. When you make a call, even if you make a call with the caller number in the incoming call history, you can add the access line number required by the host telephone system. Therefore, there is an advantage that not only the telephone user is not burdened but also the extension telephone can be used as it is.

  It is preferable that the identification information is acquired from a change in a call signal pattern set in advance with the higher-level telephone system corresponding to an analog line or a digital line, or facility information at the time of incoming call. That is, in a telephone system that accommodates a public telephone network as an office line and a telephone and a lower-level telephone system as extensions, when a call is received at the extension, the caller is based on the type of the line as the office line or the extension. In the case of an analog line, a call signal pattern is provided, and in the case of a digital line, facility information at the time of an incoming call is provided, and a means for calling by adding a change according to the line type is provided.

  The present invention relates to a key telephone system or a button telephone system having a telephone main unit that accommodates a host telephone system on an external line and a key telephone on an internal line.

  An object of the present invention is to make a call using a caller number of an incoming call history without placing a burden on the user operation and manufacturing cost of an extension terminal when making a call to a local line via a higher-level telephone system using the incoming call history. It is to configure a system that enables it.

  In order to achieve this purpose, when the telephone main unit that accommodates the higher-level telephone system on the outside line and the telephone on the internal line receives incoming information from the higher-level telephone system, the call originator of the higher-level telephone system receives the incoming information. Identification information for identifying a line type of a local line or an extension is included, and the incoming call history of each caller number received by the telephone main apparatus via the host telephone system is registered with the identification information. Therefore, when the telephone main device receives a call from the telephone for the caller number acquired from the incoming call history from the host telephone system, the identification information attached to the caller number in the incoming call history is acquired. When the identification information is a station line, the station number of the host telephone system is added to the head and the caller number is transmitted.

  Since the key telephone of the telephone system according to the present invention drives the telephone main apparatus off-hook when making a call, the caller ID can be acquired from the incoming call history of the telephone main apparatus. However, when it is desired to obtain the incoming call history of the telephone alone, the incoming call history that receives and registers the caller number may also be provided inside the telephone. In the present embodiment, the above object can be achieved regardless of whether there is an incoming call history in the extension telephone.

  The details will be described below with reference to the drawings. In the drawings, constituent elements according to the present invention are mainly shown, and therefore, components that are essential in terms of function are not shown. Changes such as separating and merging functional blocks in the description and changing the order before and after the procedure are free as long as the gist of the present invention and the functions described are satisfied, and the following description does not limit the present invention.

  A first embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a block diagram showing an embodiment of a telephone system related to the present invention.

  As shown in the figure, the key telephone main device 1 configures one button telephone system by accommodating and connecting the key telephones 2A to 2N to the extension, and connects the extension of the higher-level telephone system 3 to the outer line. The host telephone system 3 connects the extension telephones 4A to 4M to the extension lines, and connects the office line of the public telephone network 5 to the outside line, and sets the access number for local line transmission to "0", for example. The host telephone system 3 is a private branch exchange (PBX) or a CBX (Circuit Emulation Service) equivalent to PBX, and has means (31) for notifying the line type of the calling side.

  FIG. 2 is an explanatory diagram showing in detail in block form one embodiment of the telephone main device 100 of the button telephone system. The telephone main device 100 includes an external port 101, an incoming information reception unit 102, a line type recognition unit 103, an incoming call information analysis unit 104, an incoming call history registration unit 105, an incoming call extension connection unit 106, an extension port 107, an outgoing call information reception unit 108, A telephone number search unit 109, a transmission number forming unit 110, and an outside line selection transmission unit 111 are provided, and the key telephones 201 to 20N are connected to the extension port 107.

  It is assumed that the external line port 101 has ports connected to two types of the higher-level telephone system (PBX / CES) 3 and the public telephone network 5 shown in FIG. The number of the line of the external line port 101 can be designated by an external line selection button of the extension telephone. The incoming information receiving unit 102 receives predetermined incoming information sent from the host system when an incoming call is received at the external line port 101, and receives the received incoming information and the external line port number that received the incoming information. 103 is notified. The incoming call information includes a call signal type, a caller number, and the like for ringing an incoming telephone of the key telephones 201 to 20N. When the outside line port 101 is connected to the higher-level telephone system (PBX / CES), the incoming call information specifies the call signal types for ringing the key telephones 201 to 20N as a plurality of identification information. This identification information is set in advance between the host telephone system and the telephone main apparatus 100 based on, for example, a communication protocol.

  FIG. 3A shows an example in which the upper telephone system is analog and a ringing pattern is specified for the incoming signal as identification information. In this example, a ringing signal that generates a 1-second ringing on a normal public line at a cycle of 3 seconds, and a ringing pattern for a PBX incoming call from another extension of the higher-level telephone system, 0.25-second ringing, 0.25-second pause, and again 0.25 seconds Two types of call signals that repeat a pattern of pausing for 1.25 seconds after ringing are designated for the office line and extension.

  The line type recognizing unit 103 receives the incoming line number at the external line port 101 from the incoming call information accepting unit 102, and therefore identifies whether the incoming call is from, for example, a “PBX line” connected to the host telephone system (PBX / CES). . If the incoming call is not from the connection line of the higher-level telephone system (PBX / CES) but is received from the public telephone network, the line type recognition unit 103 sends a direct incoming call from the public telephone network to the incoming call history registration unit 105. Mark "Public line" and register the caller ID. On the other hand, if the incoming call is an incoming call from a connection line of a higher-level telephone system (PBX / CES), the line type recognition unit 103 sends incoming call information including “office line or extension” as the identification information to the incoming call information analysis unit 104. .

  The incoming call information analysis unit 104 analyzes whether the incoming call is a high-level telephone system (PBX / CES) local line or extension from the ringing pattern type of the identification information included in the received incoming call information, and determines the type of the local line or extension. The identification information is registered in the incoming call history registration unit 105 together with the caller number. On the other hand, the incoming call information analysis unit 104 notifies the incoming call extension connection unit 106 of the incoming call destination extension number, and sends a ringing signal from the extension port 107 to the callee key telephone (for example) 201 to ring an audible signal.

  FIG. 4 is an explanatory diagram showing an example of an incoming call history registered by the incoming call history registration unit 105 in the incoming call history table 120. A predetermined number of data is registered in the order from the latest information of the incoming date and time. The incoming call history table 120 is registered by the control means in the incoming call history registration unit 105 when an incoming call is received. Even if there is an overlap in caller ID, if there is a difference in the line type, it is assumed that it is registered as it is. In the drawing, the upper telephone system is indicated by PBX only.

  The extension port 107 accommodates and connects the key telephones 201 to 20N. The extension information receiving unit 108 is connected to a call from the key telephone (for example) 201, and the transmission information from the extension is received. When the destination dial number or the destination designation button is an extension, the transmission information receiving unit 108 drives the incoming extension connection unit 106 to call the destination extension key telephone (for example) 202. When calling an incoming call history as a destination, the outgoing call information accepting unit 108 calls the incoming call history registration unit 105 from the outgoing call number search unit 109 to search for a caller number.

  When the destination telephone number is designated from the key telephone 201, the transmission number search unit 109 acquires the identification information of the office line or the extension attached to the designated caller number from the incoming call history registration unit 105 and transmits the transmission information. The reception unit 108 is notified. The transmission information accepting unit 108 attaches whether the identification information is a local line or an extension to the designated caller number and sends it to the transmission number forming unit 110 to form a transmission dial number. When the identification information office line is attached to the designated caller number, the call number forming unit 110 adds a predetermined access number “0” to the head of the caller number to form a call dial number, In other cases, the designated caller number is used as the call dial number.

  The incoming call history registration unit 105 may receive an incoming call from the public telephone network to the external line port 101. For incoming calls from the public telephone network, “public line” is registered in the incoming call history registration unit 105 as the line type. Then, in the transmission number forming unit 110, the registered caller number is formed as it is as a transmission dial number.

  When the outside line selection / transmission unit 111 selects a port of the higher-level telephone system (PBX / CES) as the outside line port 101, if the identification information is a local line, the outgoing dial number with a predetermined access number “0” added to the head If the identification information is an extension, the designated number is sent as the outgoing dial number. The external line selection / transmission unit 111, when selecting the line with the public telephone network, that is, the public line at the external line port 101, if the identification information is a local line or a public line, the outgoing dial number without the leading access number “0” If the identification information is an extension, “call rejection” can be executed.

  Since such a configuration is adopted, regardless of whether or not the key telephone connected to the extension of the telephone main unit of the key telephone system has an incoming history, the telephone main unit has an incoming history and the key telephone has In the case of re-calling based on the incoming call history, the caller number in the incoming call history can be sent as a caller number for dialing without worrying about whether or not the user of the key telephone uses the host telephone system. Therefore, the key telephone of the key telephone system according to the present invention does not require any change, and can suppress the cost increase of the system to the minimum.

  A second embodiment of the present invention will be described with reference to FIG. 3B.

  In the embodiment of FIG. 3B, the office line / extension identification from the host telephone system in FIG. 2 is changed from the analog line in FIG. 3A to the digital line. That is, when the host telephone system is a digital ISDN (Integrated Service Digital Network) as an example, information such as “INS-CES” or “INS-Members Net” is included in the invoke component of the facility information element. It is set as the identification information and calls a lower-level telephone system.

  That is, the local line and extension of the identification information are set in place of the ring pattern type of the above embodiment. Therefore, the analysis of the identification information is changed in the telephone main apparatus, but the function of the telephone main apparatus and its operation procedure are not changed.

  As a third embodiment of the present invention, a main operation procedure in the telephone main apparatus 100 of FIG. 2 will be described with reference to FIGS. 5A and 5B together with FIG. This embodiment is common to the first embodiment or the second embodiment.

  First, FIG. 5A is an explanatory diagram showing, in a flowchart, one embodiment of an operation procedure for creating an incoming call history from an outside line in the telephone main apparatus 100.

  When the telephone main device 100 receives incoming information from the external port 101 to the incoming information receiving unit 102 (step S1), it simultaneously sends the incoming line type to the line type recognizing unit 103 for recognition (step S2). If the incoming call is from a higher-level telephone system (YES in step S3), the line type recognition unit 103 sends the incoming information to the incoming information analysis unit 104, and the incoming information analysis unit 104 analyzes the identification information from the incoming information. The “office line / extension” is identified (step S4), and the identification result is sent to the incoming call history registration unit 105 together with the caller number. The incoming call history registration unit 105 registers the caller ID as the latest incoming call history with the identification result “station line or extension” (step S5). At this time, if the same caller number and line type are registered (YES in step S6), the past registration is deleted from the incoming call history (step S7), and the registration procedure is terminated.

  When the above step S3 is “NO” and the incoming call is not from the higher-level telephone system, the line type recognition unit 103 identifies “public line” because the call is received directly from the public telephone network as shown in FIG. Is sent to the incoming call history registration unit 105 together with the caller number. The incoming call history registration unit 105 registers the caller number as the latest incoming call history with the identification result “public line” (step S8), and the procedure goes to step S6. If step S6 is “NO” and there is no identical combination in the incoming call history, the registration procedure ends.

  Next, FIG. 5B is an explanatory diagram showing, in a flowchart, one embodiment of a procedure for outgoing calls using the incoming call history in the telephone main device 100.

  For example, when the key telephone 201 makes a call and drives the extension port 107, the transmission information reception unit 108 receives the transmission information from the key telephone 201 and acquires the destination dial number as the transmission number from the transmission information (step S11). ) When the key telephone 201 designates an outside line button when making a call (YES in step S12), the call information reception unit 108 sends the call number to the call number search unit 109 to search the call history registration unit 105 (step S13). . If there is the same number in the incoming call history registration unit 105 (YES in step S14), the transmission number search unit 109 acquires the line type from the number area (step S15).

  On the other hand, in the above step S12, the line type captured by the external line button designated when the key telephone 201 makes a call is the higher-level telephone system (YES in step S16), and the identification information “office line or When the line type acquired from “extension” is a station line (YES in step S17), the transmission information receiving unit 108 receives the local line information from the transmission number search unit 109 and sends it to the transmission number forming unit 110 together with the transmission number. Upon receiving a request for local line transmission, the transmission number forming unit 110 forms a transmission dial number by adding a predetermined access number, for example, “0” to the head of the acquired transmission number, and sends it to the outside line selection transmission unit 111. The external line selection / transmission unit 111 transmits the number with the access number added to the host system via the external line port 101 designated by the button (step S18), and the transmission procedure ends.

  When the above step S12 is “NO” and the extension of the telephone main device 100 is captured by designating the button (YES in step S21), the outgoing information reception unit 108 connects to the corresponding line of the extension port 107 (step S22) and calls Proceed to the procedure. If this step S21 is “NO” and an external port is captured instead of an extension port, connection refusal processing is performed for the outgoing extension, and when there is no button designation, normal dial transmission is performed, which is irrelevant to the present invention. Processing, that is, predetermined processing (procedure S23) corresponding to the dialed number is executed. Further, when the above step S14 is “NO” and the same number is not found in the incoming call history regardless of the outside line acquisition, the dial outgoing call does not use the incoming call history, so that the process is irrelevant to the present invention, that is, according to the dialed number. The predetermined processing (procedure S24) is executed.

  In the case where the acquisition line of “NO” in step S16 is a public line and the line type acquired from the incoming call history is a public line (YES in step S25), the transmission information receiving unit 108 transmits the call with the acquired transmission number as it is. It transmits to the number formation part 110 (procedure S26), and makes it transmit from the outside line selection transmission part 111. FIG. If the above step S17 is “NO” and the acquired line type is not a station line but an extension of the higher-level telephone system, the procedure proceeds to step S26, and the transmission information accepting unit 108 keeps the acquired transmission number and forms a transmission number. To the unit 110.

  If the step S25 is “NO” and the incoming call history acquisition line is not a public line, the public line is captured on the outside line of the telephone main unit 100. Therefore, the process proceeds to the step S23 to refuse connection to the extension of the caller. The predetermined process is executed.

  There are two types of lines between the higher-level telephone system and the lower-level button telephone system of FIG. 1, analog and digital, and the higher-level telephone system and the lower-level system respectively identify the first embodiment and the second embodiment. Information may also be provided. In addition, there may be a system in which each is independent, and the respective telephone systems may be combined and connected. In the case of function merging, the function of the key telephone main unit is increased, but the flexibility is increased because it can cope with both analog lines and digital lines.

  The fourth embodiment is a higher-level telephone system having the above-described two types of identification information. With reference to FIGS. 1, 3A, and 3B in FIG. 6, the higher-level telephone system 3 of FIG. The main operation procedure will be described.

  FIG. 6 is an explanatory diagram showing an example of an operation procedure when calling the key telephone main device 1 in the host telephone system 3 in a flowchart. The host telephone system 3 has the calling functions of both the above-described FIG. 3A and FIG. 3B by means of the calling side line type notification 31.

  When the host telephone system 3 receives the incoming call (step S31) and calls the key telephone main device 1 of the lower telephone system (YES in step S32), the host telephone system 3 sets the line type with the button telephone main device 1 to be called. Identification (step S33) is performed. Therefore, in the case of capturing an analog line (YES in step S34), the upper telephone system 3 selects the calling signal pattern in the CES incoming call for the lower telephone system in FIG. 3A (step S35) and sends the selected calling signal to that signal. The data is sent to the acquisition line (step S36).

  If the above step S32 is “NO” and the call is not for a lower telephone system, a predetermined incoming call connection (step S37) is executed. When the above step S34 is “NO” and the ISDN line is used, the upper telephone system 3 creates the facility information element for the lower telephone system in FIG. 3B (step S38) and calls the key telephone main device 1 of the lower telephone system. A setting request is made (procedure S39).

  In the key telephone system or the key telephone system, the telephone main device supplements the incoming call history using the line identification information received from the host telephone system, so that the addition of a dial number which is troublesome for the user can be easily omitted and the terminal Therefore, the present invention can be widely applied to communication systems as well as general-purpose telephone systems.

It is explanatory drawing which shows one Example of the telephone system relevant to this invention with a block. (Examples 1-4) It is explanatory drawing which shows in detail the one Example of the telephone main apparatus 100 in the button telephone system of this invention with a block. Example 1 It is explanatory drawing which shows one Example when a high-order telephone system is an analog and designates a ringing pattern for an incoming signal as identification information. Example 1 It is explanatory drawing which shows one Example when a high-order telephone system is a digital ISDN, and sets identification information in the invoke component of a facility information element, and calls a low-order telephone system. (Example 2) It is explanatory drawing which shows an Example of the incoming call history registered with an incoming call history registration part by a table. Example 1 It is explanatory drawing which shows in a flowchart one Example of the operation | movement procedure of the incoming call | history creation from the outside line in a telephone main apparatus. (Example 3) It is explanatory drawing shown in the flowchart by one Example of the transmission operation | movement procedure from the extension in a telephone main apparatus. (Example 3) FIG. 1 is an explanatory diagram showing, in a flowchart, one embodiment of an operation procedure when calling a key telephone main device in the host telephone system. (Example 4)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Button telephone main unit 2A-2N, 201-20N Button telephone 3 High-order telephone system 4A-4M Extension telephone 5 Public telephone network 31 Calling side line classification notification (means)
DESCRIPTION OF SYMBOLS 100 Telephone main apparatus 101 External line port 102 Incoming call information reception part 103 Line classification recognition part 104 Incoming information analysis part 105 Incoming call history registration part 106 Incoming extension connection part 107 Extension port 108 Outgoing information reception part 109 Outgoing number search part 110 Outgoing number formation part 111 External line selection transmission unit 120 Incoming call history table

Claims (7)

  When the telephone main unit that accommodates the higher-level telephone system as an external line and the telephone as an extension receives incoming information from the higher-level telephone system, the incoming call information includes a line type indicating whether the caller is a station line or an extension of the higher-level telephone system. And including a predetermined identification information for identifying the incoming call history and the incoming call history of each caller number received by the telephone main unit via the higher-level telephone system, with the identification information added thereto, and registration A method for transmission using the registered information.   2. The method according to claim 1, wherein the identification information is acquired from a change in a call signal pattern set in advance with the host telephone system or facility information at the time of incoming call.   2. The method according to claim 1, wherein when the telephone main unit receives a call from the telephone for a caller number acquired from an incoming call history from a higher-level telephone system, the call main unit adds the caller number to the caller history. The identification information is acquired, and when the identification information is a local line, the local line access number of the host telephone system is added to the head and the caller number is transmitted.   A telephone that has a telephone main unit that accommodates a higher-level telephone system on an external line and a telephone on an internal line, registers incoming history when receiving incoming information from the higher-level telephone system, and makes a call using the registered information The incoming call information includes a caller number together with identification information for identifying a line type of a higher-level telephone system station line or extension, and the telephone main unit receives the incoming call by the higher-level telephone system. Means for accepting the incoming call information via the means, means for analyzing the identification information and caller number from the received incoming call information, and receiving the identification information in the incoming call history of each caller number included in the analyzed incoming call information And a means for registering with the telephone system.   5. The telephone system according to claim 4, wherein the identification information is included in a change in a call signal pattern set in advance with the host telephone system or facility information at the time of incoming call.   5. The telephone system according to claim 4, wherein the telephone main unit includes means for receiving outgoing information from an extension telephone, means for searching for a connection destination based on the received outgoing information by a caller number in the incoming call history, When the caller number is searched in the history, the identification information attached to the caller number is acquired in the incoming call history, and when the identification information is an external line connected to the higher-level telephone system, the higher-level telephone system A telephone system comprising means for transmitting the caller ID with a local line access number added to the head.   A telephone system that accommodates a public telephone network as a local line and a telephone and a lower-level telephone system as extensions, and when there is an incoming call to the extension, it is based on the line type of whether the caller is the local line or the extension A telephone system comprising: a calling signal pattern in the case of an analog line; and facility information at the time of an incoming call in the case of a digital line;

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