JPH0530202A - Control system for private branch exchange - Google Patents

Abstract

PURPOSE:To enable a subscriber of a private branch exchange at a visiting place to listen to a message without intervention of a PBX operator by providing a control means making setup between a caller terminal equipment and a subscriber terminal equipment to the system. CONSTITUTION:The system is provided with a storage means 113 storing presence information representing residence or visit of a subscriber using a subscriber terminal equipment, a substitute terminal equipment 103 storing delivery information sent from a caller terminal equipment through a communication network and a host computer 110 making setup between the caller terminal equipment and the substitute terminal equipment 103 when the stored presence information represents 'visit'. Upon the arrival of a call from a public network 106 to a PBX subscriber, the host computer 110 uses personal call information to judge presence/visit and records a message to a voice message device 103 in the case of 'visit'. When the recorded message is delivered, the PBX 100 delivers a message to the PBX subscriber during visit based on connection destination information from the host computer 110 to allow the subscriber to listen to the message.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control system in a private automatic telephone exchange.

[0002]

2. Description of the Related Art Conventionally, when a subscriber of a public network (hereinafter referred to as a caller) makes a call to a subscriber of a private branch exchange (hereinafter referred to as PBX), the caller calls a PBX operator and after calling. , To the PBX subscriber who is the intended called party. However, if the PBX subscriber is unable to connect to the telephone while he is out, the PBX operator puts the caller on hold in the electronic mail device (hereinafter referred to as VMS), and after the VMS recording command is performed by the operator's dial operation, Transfer the caller to VMS and send the caller's message to VMS.
Accumulated in MS. The PBX operator then accesses the pager housed in the public network to inform the outgoing PBX subscriber of the caller's message.

The PBX subscriber confirms the call by a pager accommodated in the public network while he is out, and then calls the PBX operator from the public network. The PBX operator activates the VMS by the transfer operation, and then the PBX subscriber and V
It connected the MS and delivered the caller's message to the PBX subscriber.

[0004]

However, in the conventional system as described above, the PBX operator is allowed to manage the PBX subscriber individually except for complicated operations and exchange operations. There is a problem that the use cost is increased as the man-hours of the replacement operation are increased as well as the decrease. In addition, when recording a voice message of a caller in the VMS, a complicated control command is required for the PBX operator, which causes a problem that the operating rate of the VMS is lowered. Further, since only a limited number of engineers can deal with the software development of PBX, there is a problem that the market demands of increased man-hours for development and short-term delivery due to various exchange services cannot be met.

The present invention solves the above-mentioned conventional problems. When the PBX subscriber who is the called party is out, the message to the called party does not go through the PBX operator, and the PBX of the called party is sent. It is an object of the present invention to provide a private automatic branch exchange control system capable of allowing a called party to listen to a message via a telephone.

[0006]

In order to achieve the above object, the present invention provides a storage means for storing presence information indicating presence or absence of a subscriber who uses a subscriber terminal, and transmission via a communication network. The substitute terminal for accumulating the transmission information transmitted from the caller terminal, and the control means for performing call setting between the caller terminal and the substitute terminal when the stored presence information indicates going out. There is.

[0007]

With the above configuration, when a call setting request is made from the call originator terminal, if the stored presence information indicates the presence of the room, call setting is performed between the call originator terminal and the subscriber terminal, When the presence information indicates going out, call setup is performed between the caller terminal and the proxy terminal.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of an embodiment using a control system of a private automatic branch exchange according to the present invention.
In FIG. 1, 100 is a PBX, 101 is a PBX subscriber terminal, 102 is a PBX subscriber terminal 101 and PBX100.
A line circuit for connecting to the PBX subscriber, a voice message device as a proxy terminal 100 for receiving a message to a PBX subscriber on behalf of the subscriber, and a voice message device 104.
03 is a line circuit connecting the PBX 100, 105 is a PB signal receiving trunk for receiving pager signals, 1
Reference numeral 06 is a public network, 107 is an office line trunk connecting the public network 106 and the PBX 100, 108 is a pager connected to the public network 106, 109 is a public network subscriber terminal connected to the public network 106, and 110 is a PBX subscriber. A host computer that manages personal management information of a person, 111 is a computer adapter that forms an interface between the host computer 110 and the PBX 100, 112 is a host computer central processing unit (CC1) that controls the entire host computer 110, and 113 is a host computer 110. The processing program and P that is the personal management information of the PBX subscriber
The host computer storage device (MM1) for storing the personal data of the BX subscriber, 114 is the PBX central processing unit (CC0) for controlling the entire PBX 100, and 115 is the PBX1.
00 is a PBX storage device (MM0) for storing a processing program of 00, processing control data, and the like.

Next, the operation of the above configuration will be described.

FIG. 16 is a sequence diagram until the PBX subscriber terminal 101 registers whether he is in the room or out of the room in the host computer. 2 is a state diagram of the PBX 100 and the PBX subscriber terminal 101 when performing the operation shown in FIG. 16, and FIGS. 7 to 9 are flowcharts showing the control procedure of the PBX. FIG. 21 is a format showing PBX subscriber personal data managed by the host computer, and FIGS. 22 (a) to 22 (c) are PBX subscriber personal data. The PBX and the host are used when registering the presence or absence of the room. 3 shows a control message when information is exchanged between computers. 2A shows a PBX subscriber terminal.

The operation of registering the in-room / out-of-office information of the PBX subscriber terminal will be described below with reference to FIGS. 16, 2 and 7 to 9.

In FIG. 16, P1400 indicates that the PBX subscriber terminal 101 has gone off-hook from the normal state (state S20 in FIG. 2). The line circuit 102 detects the off-hook of the PBX subscriber terminal 101 and notifies the PBX central processing unit 114. The PBX central processing unit 114
Send a dial tone (DT) to the PBX subscriber terminal 101 (P
1401), waiting for dial reception (state S2 in FIG. 2)
2).

P1402 is a PBX subscriber terminal 101.
Indicates that the user has dialed the presence or absence special number, that is, the presence information of the subscriber. The PBX central processing unit 114 analyzes the dial received via the line circuit 102 (see FIG. 7).
Step G60), when recognizing that it is a special outing number,
Start the outing registration transmission program (step G in FIG. 7)
61).

When the outing registration transmission program is started,
As shown in FIG. 8, first, in step G70, P
The caller's ID (identification) number, which is the content dialed from the BX subscriber terminal 101, and the connection destination dial number when going out are received (P1403 in FIG. 16), and the next step G
At 71, it is determined whether all dial numbers have been received. Here, when it is determined that the reception is completed, the process proceeds to the next step G72, and the out-going registration information is based on the extension number of the PBX subscriber terminal 101, the received caller's ID number, and the connection dial number when going out. Is edited and sent to the host computer 110 (P1404 in FIG. 16), and the registration permission information waiting state is entered (state S23 in FIG. 2).

In the host computer 110, when receiving the outing registration information sent from the PBX 100 through the computer adapter 111, the host computer central processing unit 112 causes the subscriber ID number in the received outing registration information (see FIG. b) M1922), the subscriber ID number of the PBX subscriber personal data stored in the host computer storage device 113 (D180 in FIG. 21).
, And recognizes that the label in the received outing registration information is going out registration (M1920 in FIG. 22B), and P
In-room / out-of-office information of BX subscriber personal data (D1 in FIG. 21)
81) is set to go out, and when the user goes out of the received outing registration information, the connection destination dial information (FIG. 22) is set.
(B) M1923) is stored in the connection destination dial number (D182 of FIG. 21) of the PBX subscriber personal data (P1405 of FIG. 16).

Host computer central processing unit 112
When the registration process is completed, the registration permission information is edited with the operation terminal extension number (M1921 of FIG. 22B) and the subscriber ID number (M1922 of FIG. 21) in the received out-of-home registration information, It is transmitted to the PBX 100 via the computer adapter 111 (P1406 in FIG. 16).

The PBX 100 recognizes the registration permission information for the PBX subscriber terminal 101 from the operation terminal extension number (M1931 in FIG. 22 (c)) in the received registration permission information, and confirms the registration confirmation sound (RT). (Fig. 1
6 (P1407), listening to registration confirmation sound (state S in FIG. 2)
24). When the caller hears the registration confirmation sound, he / she recognizes that the out-of-home registration is normally completed, and performs an on-hook operation of the handset (P1408 in FIG. 16). When the PBX central processing unit 114 recognizes through the line circuit 102 that the PBX subscriber terminal 101 has hooked the handset, the PBX subscriber terminal 101 is released and enters the normal state.

Further, when the PBX subscriber returns from the place where he / she goes out and registers for the room, the PBX subscriber terminal is taken off-hook.
When the special number in the room is dialed from the dial reception waiting state (state S22 in FIG. 2), the PBX central processing unit 114 analyzes the received dial, recognizes that the special number is in the room, and recognizes the special number in the room, and executes the presence registration transmission program. It is activated (step G62 in FIG. 7).

When the room registration transmission program is started,
In step G80 shown in FIG. 9, the ID number of the caller is received by dialing the PBX subscriber terminal 101,
In the next step G81, it is determined whether all dials have been received. If it is determined that the reception is completed, the process proceeds to step G82, and the PBX subscriber terminal 10
The room registration information is edited based on the extension number 1 and the received caller ID number, and the host computer 110
To the registration permission information waiting state (state S2 in FIG. 2).
3).

In the host computer 110, when the room registration information sent from the PBX 100 is received via the computer adapter 111, the host computer central processing unit 112 causes the subscriber ID number in the received room registration information (see FIG. 22 (a) M1912), the subscriber ID number of the PBX subscriber personal data stored in the host computer storage device 113 (D180 in FIG. 21).
When it is recognized that the label in the received room registration information is the room registration (M1910 in FIG. 22A), the PBX subscriber personal data room in / out information (FIG. 21) is searched. D181) is set to be in the room, and the operation terminal extension number in the received room registration information (see FIG. 22).
(A) M1911) is stored in the connection destination dial number (D182 of FIG. 21) of the personal data of the PBX subscriber, and thereafter, a series of operations for registration in the room is performed under the same control as the registration permission process at the time of going out registration control. Ends.

FIG. 17 is a sequence diagram until a message is registered when a PBX subscriber who is out of the public network receives an incoming call.

FIG. 3 shows P when performing the operation shown in FIG.
FIG. 7 is a state diagram of the BX 100 and the PBX subscriber terminal 101, and FIGS. 7, 10, 11, and 12 are flowcharts showing PBX control. In addition, (a) of FIG.
(B) is a control message when information is exchanged between the PBX and the host computer when the message is recorded. In FIG. 3, A is a caller (public network subscriber) terminal, B is a PB signal receiving trunk, and C is a voice message device.

Hereinafter, there will be an incoming call to a PBX subscriber who is out of the public network using FIGS. 17, 3 and 7, FIG. 10, FIG. 12, FIG. 13, and FIG. The message recording operation in the case of

In FIG. 17, P1500 indicates that there is an incoming call from the public network subscriber terminal which is the caller terminal from the normal state (state S30 in FIG. 3) of the office line trunk 107. An incoming call from a public network subscriber terminal is received by the trunk line 10
7 detects and notifies the PBX central processing unit 114, P
The BX central processing unit 114 sends a dial tone to the public network subscriber terminal via the office line trunk 107 (P1501),
The PB signal reception trunk 105 is captured, and the PB signal reception waiting state (state S31 in FIG. 3) is set.

P1502 in FIG. 17 indicates that the public network subscriber terminal dialed the ID number of the PBX subscriber by the PB signal. That is, as shown in FIG. 10, in step G90, it is received that the ID number is dialed by the PB signal, and in the next step G91, it is determined whether the dial reception is completed. Then, the PBX central processing unit 114 analyzes the received dial through the PB signal receiving trunk 105 and recognizes that it is an ID number.
The D number receiving program is activated (G63 in FIG. 7).

When the ID number receiving program is activated,
In step G100 shown in FIG. 11, the presence / absence confirmation information is edited based on the accommodation position of the office line trunk 107 that receives an incoming call from the public network and the received ID number of the PBX subscriber, and the host computer 110 Sent to (Fig. 17
P1503) and enter the room / outing information waiting state (state S32 in FIG. 3).

In the host computer 110, the PBX1
When receiving the in-room / out-home confirmation information sent from 00 via the computer adapter 111, the host computer central processing unit 112 causes the subscriber ID number in the received in-room / out-home confirmation information (FIG. 23 (a)). M2012), the subscriber ID number of the PBX subscriber personal data stored in the host computer storage device 113 (see FIG. 21).
D180) to search for room / out-of-office information (D in FIG. 21)
181), the connection destination dial number (D182 in FIG. 21),
Operation terminal information (FIG. 23) in the received in-room / out-home confirmation information
(A) M2011) and subscriber ID number (Fig. 23)
By (M2012) of (a), the in-room / out-office information is edited (P1504) and transmitted to the PBX 100 via the computer adapter 111 (P1505).

In the PBX 100, when the in-room / out-home information is received, the in-room / out-home information reception program shown in FIG. 12 is started, and the in-room / out-home type in the in-room / out-home information (see FIG. 2).
It is determined from M2023 of 3 (b) whether the user is in the room or out of the room. If the user is out of the office, a ringing tone (RBT) is sent to the public network subscriber terminal (P150).
6), in step G111 of FIG. 12, the line circuit 104
To the voice message device 103 via the call signal (I
R) is sent (P1507), and the voice message device is called (state S33 in FIG. 3).

Upon detecting the calling signal, the voice message device 103 goes off-hook and sends a response signal to the PBX 100 via the line circuit 104 (P15).
08). Upon confirming the response from the voice message device 103 in step G112, the PBX 100 enters the message recording code sending state (state S34 in FIG. 3), and in the next step G113, the host computer 110
23. The subscriber ID number (M2022 in FIG. 23B) received from the room / out-of-office information is edited, a message recording code is created, and the PB signal and the subscriber ID number are sent to the voice message device 103. Send (P1509, P1
510). Then, when the transmission of the PB signal and the subscriber ID number is completed, a message recording call state (state S in FIG.
35).

When the message from the public network subscriber terminal ends, the voice message device 103 sends an end signal by hooking on the PBX 100 via the line circuit 104 (P1511). In PBX100,
Upon confirming the call termination signal from the voice message device 103, a restoration signal is sent to the office line trunk 107 (P1).
512) and then the normal state is reached.

Further, in step G110 of FIG.
If it is determined that the room / outgoing type (M2023 in FIG. 23B) in the room / outgoing information received from the host computer 110 is in the room, the process proceeds to step G114 and the connection destination dial in the information is performed. Information (M202 in FIG. 23 (b)
According to 4), the terminal is called when the PBX subscriber goes out. Then, the conventional terminal calling process is performed, and the PBX that is the called party.
Depending on the subscriber's response, it is possible to talk to the public network subscriber.

FIG. 18 and FIG. 19 show a sequence diagram from the voice message device until the recorded message is delivered to the PBX subscriber who is out.

FIGS. 4 and 5 are state diagrams of the PBX when the operations shown in FIGS. 18 and 19 are performed, and FIGS.
3, FIG. 14, and FIG. 15 are flowcharts showing the control procedure of the PBX. In FIGS. 24A and 24B, when the recorded message is delivered, the PBX and the host computer exchange information. It is a control message when. 4 and 5, A is a voice message device and B is a PBX subscriber.

The delivery operation of the recorded message transmitted from the voice message device 103 will be described below with reference to the above figures.

In FIG. 18, P16100 indicates that the voice message device 103 is in a normal state (state S41 in FIG. 4).
From 0), it shows that it went off-hook. Line circuit 10
4, when the off-hook of the voice message device 103 is detected and the PBX central processing device 114 is notified, the PBX central processing device 114 sends a dial tone (DT) to the voice message device 103 (P16101) and is in a dial reception waiting state. (State S411 in FIG. 4).

P16102 is a voice message device 1
03 indicates that the recorded message delivery special number has been dialed. The PBX central processing unit 114 includes the line circuit 104.
When the dial received via the terminal is analyzed and it is recognized that it is a recorded message delivery special number, the recorded message delivery program is started (G64 in FIG. 7).

When the recorded message delivery program is activated, first, in step G120 shown in FIG. 13, the PBX subscriber ID number corresponding to the recorded message dialed by the voice message device 103 is received (P1610).
3) In the next step G121, it is determined whether the dial reception is completed. Here, if it is determined that the reception is completed, the process proceeds to step G122, and the extension number of the voice message device 103 and the received PBX subscriber ID.
The connection request information is edited based on the number and transmitted to the host computer 110 (P16104). Further, the recording message transmission waiting code is transmitted to the voice message device 103 by the PB signal (P16105), and the connection destination information waiting state (state S412 in FIG. 4) is entered.

In the host computer 110, the PBX1
00, the host computer central processing unit 112 uses the subscriber ID number (M2112 in FIG. 24A) in the received connection request information to send the connection request information to the host computer. Subscriber I stored in computer storage 113
The D number (D180 in FIG. 21) is searched, and the label in the received connection request information indicates the ID number connection request (FIG. 24 (a)).
M2110) of the PBX subscriber personal data is connected to the dial number (D182 of FIG. 21).
And operation terminal information (FIG. 24) in the received connection request information.
The connection destination information is edited with (M2111 in (b)) and the subscriber ID number (P16106) and transmitted to the PBX 100 via the computer adapter 111 (P1610).
7).

In the PBX 100, when the connection destination information is received, the dial analysis shown in FIG. 7 starts, and the calling special number in the received connection destination information (M2123 in FIG. 24B).
Analyzes pager call or general call (Fig. 14
Step G1310).

When it is determined that the calling special number is pager calling, the pager calling program of G65 shown in FIG. 7 is started. That is, since the message cannot be heard with a normal pager, an end code and a PB signal are sent to the voice message device 103 (P16).
108). When the voice message device 103 detects the end code, it sends a disconnection signal (on-hook) to the PBX 100 (P16109) and enters a normal state. PBX
When the central processing unit 114 recognizes the disconnection signal from the voice message device 103 via the joining line circuit 104, it releases the voice message device 103 (step G1311).

Further, in the next step G1312, the PBX central processing unit 114 activates the office line trunk 107 (P16110) and sets the public network dial transmission state (state S420 in FIG. 5) to the received connection destination information. According to the connection destination dial information (M2124 in FIG. 24B), a dial for calling a public network subscription pager possessed by the PBX subscriber is transmitted to the public network (P
1611 and step G1313). Then, when it is determined in the next step G1314 that the transmission is completed, it waits for a response from the public network.

When the public network 106 confirms the pager call, the PBX 100 is sent via the central line trunk 107.
A response signal is transmitted to (P16112). PBX100
When recognizing the response from the public network, the public network 106 transmits a restoration signal to the public network 106 via the station line trunk 107 (P16).
113), the normal state is reached.

On the other hand, in step G1310 of FIG. 14, when the calling special number (M2123 of FIG. 24B) in the received connection destination information is the public network calling (general call), G66 of FIG. When selected, the public network transmission program shown in FIG. 15 is activated. When this public network transmission program is started, the central line trunk 1 is started in step G1320.
07 is started (P16200 in FIG. 19), the public network dial transmission state (state S421 in FIG. 5) is set, and the connection destination dial information in the received connection destination information (M2 in FIG. 24B) is set.
124) to send a dial to the public network (P
16201 and step G1321). Then, when it is judged in the next step G1322 that the transmission is completed, it waits for a response from the public network.

In the public network 106, the public network subscribing terminal 109 is called by the dial sent from the PBX 100, and the PBX subscriber who is the called party calls the public network subscribing terminal 10.
When responding to the public network 106 by 9, the public network 106 transmits a response signal to the PBX 100 via the station line trunk 107 (P16202). Upon recognizing the response from the public network, the PBX 100 sets the recording message listening preparation state (state S422 in FIG. 5) and sends the message listening code as a PB signal to the voice message device 103 (P16203). When the transmission of the PB signal is completed, the recorded message listening state (state S423 in FIG. 5) is set, and the PBX subscriber who is out can listen to the recorded message.

When the recorded message listening call is completed, a disconnection signal (on-hook) is sent from the voice message device 103 through the line circuit 104 (P16204),
The PBX central processing unit 114 recognizes this and sends a restoration signal to the public network 106 via the office line trunk 107 (P16205), and the normal state is set.

FIG. 20 shows a sequence diagram until the PBX subscriber who is out and carries a pager listens to the message recorded in the voice message device.

FIG. 6 shows P when performing the operation shown in FIG.
FIG. 7 is a state diagram of the BX 100, and FIGS. 7 and 10 are flowcharts showing a control procedure of the PBX central processing unit 114 in this case.

The operation of a PBX subscriber who has a pager and is out and about to listen to a message recorded in the voice message device will now be described with reference to FIGS. 20, 6, 7, and 10.

In FIG. 20, P1700 indicates that there is an incoming call from the PBX subscriber using the public network subscriber terminal from the normal state (state S50 in FIG. 6) of the office line trunk 107. When the station line trunk 107 detects an incoming call from the public network and notifies the PBX central processing unit 114, the PBX central processing unit 114 sends a dial tone to the caller via the station line trunk 107 (P1701), and outputs the PB signal. The reception trunk 105 is captured and the PB signal reception waiting state (state S51 in FIG. 6) is set.

In P1702, the PBX subscriber who is out
The B signal indicates that the extension number of the voice message device 103 has been dialed (step G90 in FIG. 10,
Equivalent to G91). The PBX central processing unit 114 analyzes the received dial through the PB signal receiving trunk 105 and, when recognizing that it is the extension number of the voice message device 103, activates the extension number receiving program of G67 shown in FIG. .

When the extension number receiving program starts, a ringing tone is sent to the PBX subscriber who is out (P
1703), and sends a call signal to the voice message device 103 via the line circuit 104 (P1704),
Voice message device calling state (state S52 in FIG. 6)
Becomes

In the voice message device 103, when the call signal is detected, the PBX 1 is sent via the line circuit 104.
A response signal (off-hook) is sent to 00 (P17).
05). The PBX 100 is a voice message device 103.
Upon confirming the response from, the message listening call state (state S53 in FIG. 6) is entered, and the recorded message listening code is sent to the voice message device 103 as a PB signal by the operation of the PBX subscriber who is out and about. Can be heard.

When the call for listening to the recorded message is completed, a disconnection signal (on-hook) is sent from the voice message device 103 through the line circuit 104 (P1706), and P
The BX central processing unit 114 recognizes this and sends a restoration signal to the public network 106 via the office line trunk 107 (P1707), and the normal state is set.

By the processing described above, message recording is performed by the PBX subscriber's in-room / out-of-office management and message delivery to the destination is performed, and the private management control system of the private branch exchange becomes possible.

Although the control system for connecting the PBX subscriber terminal and the public network, that is, the switching line has been described in the above embodiment, the network may be a communication network including a direct line (dedicated line). Of course, it can be applied.

The information transmitted from the sender terminal is
Not only the voice message, but also character or graphic information such as facsimile information or image information may be used.

[0058]

As described above, according to the present invention, P
Even if the BX subscriber is out,
Transfers can be made to PBX subscribers on the go without going through the BX operator, and the exchange service can be improved.

If a function for performing exchange service (automatic operator service, etc.) is added to the proxy terminal, P
It does not require BX and has the effect of being economically advantageous.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a private automatic branch exchange control system according to an embodiment of the present invention.

FIG. 2 is a state diagram of the PBX until the PBX subscriber registers in the host computer whether he is in the room or out.

FIG. 3 is a state diagram of the PBX at the time of recording a message when an incoming call is made to a PBX subscriber who is out.

FIG. 4 is a state diagram of a part of the PBX showing a state until a recorded message is delivered from a voice message device to a PBX subscriber who is out.

FIG. 5 is a state diagram of a part of the PBX showing a state until the recorded message is delivered from the voice message device to the PBX subscriber who is out.

FIG. 6 is a PBX state diagram showing a state in which a PBX subscriber listens to a message recorded in a voice message device.

FIG. 7 is a flowchart showing a processing procedure of dial analysis.

FIG. 8 is a flowchart showing a processing procedure of outgoing registration transmission.

FIG. 9 is a flowchart showing a processing procedure for in-room registration transmission.

FIG. 10 is a flowchart showing a processing procedure of a public network incoming call.

FIG. 11 is a flowchart showing a processing procedure for receiving an ID number.

FIG. 12 is a flowchart showing a processing procedure for receiving in / out information.

FIG. 13 is a flowchart showing a processing procedure for delivering a recorded message.

FIG. 14 is a partial flowchart showing a processing procedure when receiving connection information.

FIG. 15 is a partial flowchart showing a processing procedure when receiving connection information.

FIG. 16 is a sequence diagram showing a state until the PBX subscriber registers in the host computer whether he is in the room or out of the office.

FIG. 17 is a sequence diagram showing a state until a message is registered when a PBX subscriber who is out of the office receives an incoming call.

FIG. 18 is a partial sequence diagram showing a state in which a voice message is delivered from a voice message device to a PBX subscriber who is out.

FIG. 19 is a partial sequence diagram showing a state in which a voice message device delivers a recorded message to a PBX subscriber who is out.

FIG. 20 is a sequence diagram showing a state in which a PBX subscriber listens to a message recorded in a voice message device.

FIG. 21 is a data configuration diagram for realizing the private branch exchange personal management control system in the present embodiment.

22A to 22C are configuration diagrams of information exchanged between the PBX and the host computer in this embodiment.

23A and 23B are configuration diagrams of information exchanged between the PBX and the host computer in this embodiment.

24 (a) and 24 (b) are configuration diagrams of information exchanged between the PBX and the host computer in this embodiment.

[Explanation of symbols]

100 PBX 101 PBX subscriber terminal 102, 104 line circuit 103 Voice message device (substitute terminal) 105 PB signal receiving trunk 106 public network 107 station trunk 108 pager 109 Public network subscriber terminal 110 host computer 111 Computer adapter 112 Central processing unit of host computer (CC1) 113 host computer storage device (MM1) 114 PBX Central Processing Unit (CC0) 115 PBX storage device (MM0)

Claims (5)

[Claims] 1. A control system for a private automatic branch exchange connecting a plurality of subscriber terminals and a communication network, wherein presence information indicating presence or absence of a subscriber who uses the subscriber terminal and presence of the subscriber. Storage means for storing subscriber identification information indicating identification, a proxy terminal for accumulating transfer information transmitted from a caller terminal via the communication network, and a call between the caller terminal and the subscriber terminal Setting control means, wherein the control means performs call setting between the caller terminal and the proxy terminal when the presence information of the subscriber terminal indicates going out. A control system for a private branch exchange. 2. The presence information includes dial information of an out-going terminal used by the subscriber when he / she goes out, and the control means calls the out-going terminal after the proxy terminal accumulates the transfer information. 2. A control system for a private automatic branch exchange according to claim 1. 3. The presence information includes dial information of an out-going terminal used by the subscriber when he / she goes out, and the proxy terminal calls the out-going terminal after accumulating the transfer information. Item 1. A control system for a private automatic branch exchange according to item 1. 4. The control means, when the substitute terminal receives a call from the out-of-going terminal used by the subscriber when going out after the agency terminal stores the transmission information, 2. A control system for a private automatic branch exchange according to claim 1, wherein call setup is performed between the two. 5. The control system for a private automatic branch exchange according to claim 1, wherein the proxy terminal is a mail device that stores a voice message transmitted from the caller terminal.