JP3675316B2 - Calling method of extension mobile phone in private branch exchange system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for calling an extension mobile telephone in a communication system in which a plurality of private branch exchange systems are connected by a dedicated line (dedicated communication line).
[0002]
[Prior art]
In a conventional private branch exchange system, a method for calling an extension mobile telephone normally calls an extension mobile telephone in one private branch exchange system (A) and leaves the area of the private branch exchange system (A). If the mobile phone holder moves to an area of a private branch exchange system (B, C,...) Such as another office or factory or branch office of the same entity, it will be out of the calling area and the mobile phone The call is disabled. However, when the mobile phone moves to another private branch exchange system (B, C,...), The destination private branch exchange system number is registered in the private branch exchange system (A) to which the mobile phone belongs. When there is an incoming call (call) in the mobile telephone, there is a service system that automatically transfers the incoming call (call) via a dedicated line provided between the private branch exchange systems to the private branch exchange system at the destination. .
[0003]
[Problems to be solved by the invention]
However, if the above-mentioned mobile telephone holder forgets to register the movement to the private branch exchange system (B) such as another office or branch, for example, transfer is impossible and a call cannot be made. In addition, after registering the private branch exchange system (B) at the destination, when moving to the private branch exchange system (C) at another office or the like, the private branch exchange system (A) to which the user belongs belongs. Since it is necessary to change the registration, registration of the destination is complicated, and registration is often forgotten.
In addition, contact with people who travel a lot, especially on business trips, is possible by calling and searching for a branch office on the public line, or having a mobile phone connected to the public line, etc. It is necessary to take measures.
[0004]
The present invention is the same for an extension mobile telephone that moves between a plurality of private branch exchange systems by using a dedicated line that connects the private branch exchange systems provided in the offices dispersed in each city of the same business entity. The call is made efficient by making it possible to call using an extension number.
[0005]
[Means for Solving the Problems]
In the private branch exchange system of the present invention, the extension mobile telephone call system is such that private branch exchange systems provided in offices distributed by the same business entity are connected to each other by a dedicated line. In a switching system configured to connect a mobile telephone, the telephone number of the mobile telephone moving between the plurality of private branch exchange systems and one or more private branch exchange system numbers of the destination Priorities are assigned and registered in the private branch exchange system to which the mobile telephone belongs, and when there is an incoming call to the mobile telephone, the private branch exchange system to which the mobile telephone belongs passes through each base station. If the mobile telephone is called and no response is received from the mobile telephone within a predetermined time, the registration is made to the first other private branch exchange system based on the priority. When a call signal including data is transmitted via the dedicated line, the mobile telephone is called via the base station of the other first private branch exchange system, and there is no incoming response from the mobile telephone within a predetermined time If there is another second private branch exchange system registered, the mobile telephone can be transferred even if the registered one or more private branch exchange systems are called. When there is no incoming call response from the mobile phone, a connection impossible signal is sent from the private branch exchange system to which the mobile phone belongs to the mobile phone, and a call from the other private branch exchange system is answered. When there is an incoming call response from the mobile telephone, a speech path is configured through the dedicated line.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The calling method of the extension mobile telephone in the private branch exchange system according to the present invention will be described with reference to the conceptual diagram shown in FIG. In FIG. 1, 1A is an exchange of a private branch exchange system at the headquarter of city A, for example, 1B to 1D are exchanges of private branch exchange systems such as branch offices, branches, and factories of cities BD, and 2A1 to 2An are radios connected to the exchange 1A. 3Aa1 to 3Aan are mobile phones existing in the communication area 4A1 of the base station 2A1, and 3Ab1 to 3Abn and 3An1 to 3Ann are in the communication areas 4A2 to 4An of the base stations 2A2 and 2An, respectively. An existing mobile phone. 2C1 and 2Cn are base stations connected to the exchange 1C of the private branch exchange system of the C city branch, and 3Ca1 to 3Can are mobile telephones existing in the communication area 4C1 of the base station 2C1.
[0007]
Although not shown in the figure, the exchanges 1B, 1C, and 1D of other branch offices, sales offices, and the like are provided with a plurality of base stations, as in the private branch exchange system of the exchange 1A. There are a plurality of mobile telephones in each area. Further, each of the exchanges 1A to 1D is provided with a single telephone or a telephone of a button telephone device connected by wire as necessary. Reference numerals 5a to 5d are dedicated lines for connecting the exchanges 1A to 1D of the private branch exchange system, respectively. Although not shown, normally, dedicated lines are also provided between the exchanges 1A and 1C and 1B and 1D. Further, 1A to 1D etc. headquarters and branch offices of A~D cities dispersion has been described as the exchange of placed by private branch exchange system was kicked set such headquarters and branch or sub-branches which dispersed in the same city It can be a thing.
[0008]
FIG. 2 is a functional block diagram of, for example, the exchange 1A according to the present invention, 11 is a main control unit including a CPU, 12 is a memory unit, and a mobile telephone in each area of each base station 2A1-2An connected to the exchange 1A. Of 3Aa1 to 3Ann, the extension telephone number of a mobile telephone possessed by an employee who travels to each branch office or branch from time to time frequently, that is, the extension number of a mobile telephone that requires unattended transfer, the branch office that travels (moves) A system number of a private branch exchange system such as a branch office, a private line number between those private branch exchange systems, a predetermined unanswered transfer transition time, and the like are stored. Reference numeral 13 denotes an exchange unit having a switch function for performing exchange connection of a telephone in accordance with an instruction from the main control unit 11.
[0009]
Reference numeral 14 denotes a terminal interface unit (terminal IF unit) to which a wired telephone or the like is connected. Reference numeral 15 denotes a dedicated line interface unit (dedicated line IF unit) to which dedicated lines 5a and 5d for connecting the private branch exchange systems to each other are connected. Reference numeral 16 denotes a wireless unit, for example, where a plurality of base stations 2A1 to 2An and mobile telephones 3Aa1 to 3Ann existing in the base station area are wirelessly connected.
FIG. 3 is a control block diagram of, for example, the main control unit 11 of the exchange 1A shown in FIG. 2 according to the present invention, and is a block diagram mainly controlling call processing. In FIG. 3, 21 is an exchange control unit for controlling exchange connection, and 22 is a terminal call control unit for controlling calling of a terminal such as a telephone connected to the exchange 1A by wire.
[0010]
Reference numeral 23 denotes a dedicated line call control unit that controls calls via dedicated lines 5a and 5d connected to the exchange 1A, for example, and has a function of controlling the call by converting other private branch exchange system number designations into dedicated line numbers. ing. Reference numeral 24 denotes a radio call control unit that controls calling of the mobile telephones 3Aa1 to 3Ann existing in the areas of the plurality of base stations 2A1 to 2An connected to the exchange 1A, for example. For example, 25 is a timer control unit for controlling the call continuation time (unanswered transfer transition time) of the incoming call to the mobile telephone 3Aa1 of the exchange 1A, and 26 is a basic input / output unit for various data with other private branch exchange systems. For example, the private branch exchange system number to which the mobile telephone to be called belongs, the private branch exchange system numbers of one or a plurality of destinations, the mobile telephone numbers, etc. are input / output.
[0011]
Next, a specific calling operation of the calling method of the extension mobile telephone according to the present invention will be described with reference to the flowcharts shown in FIGS. In FIG. 4, when this private branch exchange system is started F1, for example, when a mobile telephone 3Ax is designated from a calling terminal F2 connected to the private branch exchange 1A and there is a call F3, the call generation F4 of the private branch exchange 1A The presence / absence is detected, and when a call is detected, the mobile terminal incoming call F5 is issued to the mobile telephone 3Ax. At the same time that this incoming call occurs, the timer set F6 operates to detect the presence / absence of an incoming terminal (mobile telephone) response F7 within the call duration set by the timer. If there is a response within this time, the exchange connection F8 is performed, the communication path is formed, and the call F9 is performed. Note that the timer setting is a time for detecting a response signal to an incoming call, and can be detected in a short time (about 2 to 3 seconds).
[0012]
If the incoming terminal response presence / absence F7 does not detect a response within the call duration set by the timer, that is, if time-out F10 is reached, the incoming call is stopped and a predetermined transfer destination data is acquired. F11 is performed. The transfer destination data includes a private branch exchange system number (1B, 1C, 1D, 1A) including the private private branch exchange system number (1A), a mobile telephone number (3Ax), and the like. The transfer destination private branch exchange system number can be arbitrarily set in correspondence with the mobile telephone number. That is, one mobile phone registers three private branch exchange systems 1B, 1C, and 1D in the arrangement order based on the behavior characteristics of the owner, and the other mobile telephone sets two private branch exchange systems based on the behavior characteristics of the owner. 1D and 1C can be registered in the arrangement order. From this transfer destination data, the transfer dedicated line access No. presence / absence F12 is detected. If there is no transfer dedicated line access No, the connection terminal F2 is switched to the mobile telephone 3Ax by the busy tone generation F13, for example, as a connection impossible signal. Inform that connection is not possible.
[0013]
If there is a transfer private line access number F12 and the transfer destination (first transfer destination) is the private branch exchange system number (1B), the private branch exchange system number (5a) in FIG. 1C, 1D, 1A) and the mobile telephone number (3Ax) are output F14. As a result, for example, the private branch exchange system number (1B) corresponding to the first private branch exchange system generates a mobile terminal incoming call F15. At the same time that this incoming call occurs, the timer set F16 operates to detect the incoming terminal response presence F17 within the call duration set by the timer. If there is a response within this time, the exchange connection F18 is performed, a communication path including the dedicated line (5a) is formed, and the call F19 is performed.
[0014]
If the incoming terminal response presence / absence F17 does not detect a response within the set call duration time, a time-out F20 occurs, the incoming call is stopped, and the transfer destination data acquisition F21 registered in advance is performed. The transfer private line access No. presence / absence F22 is detected from this transfer destination data, and if there is no transfer private line access No., the first private branch exchange system (1A) having received an incoming call via the private line (5a). The business tone generation F13 is activated to inform the calling terminal F2 that the exchange connection to the mobile telephone 3Ax is impossible.
[0015]
When the transfer private line access number is F22 and the transfer destination (second transfer destination) is the private branch exchange system number (1C), the private branch exchange system number (1D, 1A) and the mobile telephone number (3Ax) are output F23. As a result, for example, the private branch exchange system number (1C) corresponding to the second private branch exchange system generates a mobile terminal incoming call F24. At the same time that this incoming call occurs, the timer set F25 of FIG. 6 operates to detect the presence or absence of an incoming terminal response F26 within the call duration set by the timer. If there is a response within this time, the exchange connection F27 is performed, a communication path including the dedicated lines (5b, 5a) is formed, and the call F28 is performed.
[0016]
If the incoming terminal response presence / absence F26 does not detect a response within the set call duration time, a time-out F29 occurs, the incoming call is stopped, and the transfer destination data acquisition F30 registered in advance is performed. From this transfer destination data, the transfer private line access number presence / absence F31 is detected. If there is no transfer private line access number, the first private branch exchange system (1A) that has received an incoming call via the dedicated line (5b, 5a). ) Is activated to inform the calling terminal F2 that the exchange connection to the mobile telephone 3Ax is impossible.
[0017]
If the transfer private line access number is F31 and the transfer destination (nth transfer destination) is the private branch exchange system number (1D), the private exchange system number (1A) is assigned to the nth private line (5c). The mobile telephone number (3Ax) is output F32. Accordingly, for example, the private branch exchange system number (1D) corresponding to the nth private branch exchange system generates F33 a mobile terminal incoming call. At the same time that this incoming call is generated, the timer set F34 operates to detect the presence / absence of the incoming terminal response F35 within the call duration set by the timer. If there is a response within this time, the exchange connection F36 is performed, a communication path including the dedicated lines (5c, 5b, 5a) is formed, and the call F37 is performed.
[0018]
If the incoming terminal response presence / absence F35 does not detect a response within the set call duration, a time-out F38 occurs, and the incoming call is stopped and the nth private branch exchange system (1D) moves the mobile telephone 3Ax to the mobile telephone 3Ax. If it is the last private branch exchange system to be called, the visit tone generation F13 of the first private branch exchange system (1A) that has received an incoming call is activated via the dedicated line (5c, 5b, 5a) and the mobile terminal is set to the calling terminal F2. Informs that the exchange connection to the telephone 3Ax is impossible.
[0019]
As described above with reference to the flowcharts of FIGS. 4 to 6, the present invention provides a dedicated line between private branch exchange systems installed in the headquarters, factories, branch offices, sales offices, etc. of the same entity scattered in each city. Even if an employee who has a mobile telephone connected to a private branch exchange system and who belongs to a specific private branch exchange system moves from the communication area of a specific private branch exchange system to the communication area of another private branch exchange system, 1 By ranking the private branch exchange system numbers of locations or multiple destinations (business trip destinations) and registering them in the private branch exchange system to which the mobile phone belongs, A private branch exchange system can be called, the destination can be tracked, and the mobile telephone can be called.
[0020]
【The invention's effect】
In the private branch exchange system of the present invention, the extension mobile telephone call method does not require registration of the private branch exchange system of the business trip destination every time the mobile telephone holder makes a business trip, and forgets complicated registration work. Can solve the problem of being unable to make an emergency call to the mobile phone even though it exists in another private branch exchange system area. Multiple private branch exchange systems of the same company distributed in each city use the same extension number. Calling is possible, and efficient operation of the communication system can be achieved.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram of the overall configuration of a mobile telephone calling method according to the present invention.
FIG. 2 is a functional block diagram of an exchange of the private branch exchange system of the present invention.
FIG. 3 is a block diagram for controlling call processing of the exchange according to the present invention.
FIG. 4 is a flowchart for explaining a part of the operation of the mobile telephone calling method of the present invention.
FIG. 5 is a flowchart for explaining another part of the operation of the calling method of the mobile telephone of the present invention.
FIG. 6 is a flowchart for explaining another part of the operation of the mobile telephone calling method of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Private branch exchange 2 Switch base station 3 Mobile telephone 4 Base station communication area 5 Dedicated line 11 Main control unit 12 Memory unit 13 Exchange unit 14 Terminal IF unit 15 Dedicated line IF unit 16 Radio unit 21 Exchange control unit 22 Terminal Call control unit 23 Dedicated line call control unit 24 Radio call control unit 25 Timer control unit 26 Basic input / output unit

Claims (3)

Switching systems configured such that private branch exchange systems provided in offices distributed by the same business entity are connected to each other by a dedicated line, and a mobile telephone is connected to each of the plurality of private branch exchange systems. The mobile phone to which the mobile telephone belongs is prioritized with the telephone number of the mobile telephone moving between the plurality of private branch exchange systems and one or more private branch exchange system numbers of the destination. When the mobile telephone is registered in the system and there is an incoming call to the mobile telephone, the mobile telephone is called from the private branch exchange system to which the mobile telephone belongs via each base station, and the mobile telephone is within a predetermined time. If there is no incoming call response from the mobile station, a call signal including the registration data is transmitted to the first other private branch exchange system via the dedicated line based on the priority, and the other first configuration is transmitted. There is the other second private branch exchange system that is registered when the mobile telephone is called through the base station of the switching system and there is no incoming response from the mobile telephone within a predetermined time. If the call is forwarded in the same manner and there is no response from the mobile telephone even if the registered one or more private branch exchange systems are called, the private branch exchange system to which the mobile telephone belongs A connection impossible signal is sent to the mobile telephone, and when there is an incoming call response from the mobile telephone in response to a call from the one or more other private branch exchange systems, a call path is established via the dedicated line. Calling method of extension mobile telephone in private branch exchange system.   Registration data transmitted from the private branch exchange system to which the mobile telephone belongs to another private branch exchange system via a dedicated line with a specified priority order includes the private branch exchange system number to which the mobile telephone belongs. The call system for an extension mobile telephone in the private branch exchange system according to claim 1.   The connection priority of one or more other private branch exchange systems registered in the private branch exchange system to which the mobile telephone belongs can be arbitrarily determined according to the behavior of the mobile telephone holder. Calling method for an extension mobile telephone in the private branch exchange system according to claim 1.

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