JP2851876B2 - Method for displaying information about a receiving terminal on a transmitting terminal, and a communication system, an exchange, and a terminal device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication service of a communication network using a signaling system capable of transmitting a call control signal independently of a call and including additional information. The present invention relates to a method of displaying information on a receiving terminal on a transmitting terminal, which is suitable for efficient use, as well as a communication system, an exchange and a terminal device.

[Conventional technology]

As one of the communication systems capable of handling a large amount of call control signals, a common channel signaling system is known. Currently, the common channel signaling method is generally called International Telegram and Telepho.
This refers to the No. 7 signal system (hereinafter abbreviated as No. 7) recommended by the ne Consultative Committee (CCITT). But,
No.7 itself does not have many provisions for supplementary services. The service for incomplete calls is CCBS (Completion of
Calls to Busy Subscviber). CC
BS is the CCIT Red Book, Volume VI. Fascicle VI.8 (1984) pp. 80-82 and 240 (CCITT Red Book VOLUME VI FASI
As described in CLE VI.8 (1984) pp80-82, pp240), this is a so-called callback service. If you register this function when you call a busy subscriber or extension, When the busy subscriber or extension becomes free, both the calling party and the called party receive a call from the system. However, this CCBS is a function only when the incoming extension is busy. In general, it is wasteful to continue calling normally, for example, when the called party does not return to a seat for a while during a meeting or is away for a few days during a business trip, for example, when the called party is not busy and the incoming extension is idle. There are cases.

Further, before actually calling the called party, it may be necessary to confirm the called party's name and other information about the called party, but No. 7 does not specify such a service.

The Integrated Services Digital Network (ISDN) can handle a large amount of call control signals, but has the same problem.
Japanese Patent Application Laid-Open No. 62-263743 discloses that when a user of an extension telephone is absent, there is a means for storing that the user is absent and a telephone number of a transfer destination, and when the user is absent, A technique for transferring an incoming call to a transfer destination is shown. However, this technique does not solve the above problems.

Incidentally, Japanese Patent Application Laid-Open No. 63-63, filed under the name of the same applicant.
Japanese Patent No. 178233 relates to technology related to private branch exchange telephones (extensions), in which information about subscribers' business trips, meetings, etc. is input to a PBX, and when a call arrives, the incoming extension telephone is not called.
A calling system in which a user (caller) of a calling extension hears a sound (talkie) for giving information is disclosed. This scheme differs from that relating to communication across multiple switches.

[Problems to be solved by the invention]

According to the above-described conventional technology, even if the user of the receiving terminal is absent during a business trip or a meeting, the calling party does not know that, and the call is continued for a certain period of time. And on-hook to disconnect the line. In addition, the caller does not know the situation of the receiving side, and makes a useless call again. During this useless call, the line is blocked, which hinders effective use of the line. In order to avoid such inconvenience, if the absence information of the called party is returned from the exchange on the called side to the calling side at the time of calling, the useless use of the line described above is eliminated, and The information of the called party is also transmitted to the calling party, and the communication serviceability is improved. However, at the present time, a technology for realizing such a communication service has not been developed, and this is an issue to be addressed in the future.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a receiving terminal in which user state information (or called party state information) on a called terminal is displayed on the calling terminal when a calling connection request is received from the calling terminal. How to display information on the calling device,
Further, a communication system and a receiving side exchange according to the method,
The receiving terminal device is provided.

[Means for solving the problem]

The method for the above object is a step of registering, in the receiving side exchange, user state information relating to the receiving side terminal and incoming / outgoing information set in accordance with the user state information, and receiving an incoming connection request from the calling side terminal. When receiving, determining whether or not an incoming call to the receiving side terminal is possible based on the incoming / outgoing information, and when the incoming / outgoing information is available, the transmitting side terminal and the outgoing terminal based on the incoming connection request. Connecting the receiving terminal, calling the receiving terminal, and transmitting the user state information to the originating exchange; and Transmitting the user status information to the originating exchange without connecting to the terminating terminal; and transmitting the user status information transmitted from the originating exchange to the It is accomplished by constructing and a step of displaying on the display unit of the calling terminal.

The communication system according to the above object includes: means for storing, in the receiving side exchange, user status information relating to the receiving side terminal and reception availability information set in accordance with the user state information; When receiving, the means for judging whether or not an incoming call to the receiving side terminal is possible using the incoming call availability information, and when the incoming call availability information is incoming, the outgoing side terminal based on the incoming connection request. Connects the called terminal, calls the called terminal, and transmits the user state information to the calling exchange. Means for transmitting the user status information to the originating exchange without connecting to a terminating terminal; and a table of the originating terminal for transmitting the user status information transmitted from the originating exchange. It is accomplished by constructing and means for displaying the part.

The exchange for the above purpose is set according to switch means for executing transmission of a call signal between the called terminal and the originating exchange, and user state information and the user state information relating to the called terminal. Memory means for storing incoming call permission / inhibition information, means for determining the receiving side terminal accommodated in the receiving side exchange when the outgoing connection request is transmitted from the outgoing side exchange, and Means for judging whether or not an incoming call can be made, and when the incoming call availability information indicates that an incoming call is possible, the calling side terminal and the called side terminal are connected to each other based on the incoming call connection request to call the called side terminal. And, transmitting the user state information to the originating exchange, and when the incoming call availability information is incoming or outgoing, without connecting the originating terminal and the receiving terminal, the The use's state information is accomplished by constructing and means for transmitting to said originating switch.

The terminal device for the above purpose, a memory means for storing the callee status information and callability information set according to the callee status information, and means for determining whether or not the call can be received from the callability information, When the call acceptability information indicates that the call can be accepted, a call is made to the callee terminal in response to the call connection request, and the callee status information is transmitted to the caller terminal. Means for making a line disconnection request without calling the called side terminal in response to the incoming connection request, and sending the called party state information to the calling side terminal. Is done.

[Action]

The called party status information registered by the called party includes the presence / absence / absence reason of the called party, and when there is an incoming connection request from the calling terminal, the presence / absence / absence reason is received. Is set according to the incoming call availability information. If the called party cannot respond due to absence or the like based on the incoming call availability information, registration information, that is, called party status information (or user status information) is returned from the called side exchange to the calling side terminal by the called party. In addition, it is displayed on the calling terminal. At this time, if the communication line established between the calling terminal and the called terminal is automatically disconnected and restored, the line can be further effectively used. For example, if the called party is in a meeting and the time of return is registered, the fact that the meeting is in the meeting and the time of returning is displayed on the calling terminal, but this allows the caller to know the state of the called party, This makes it possible to judge when the callee can be reached, and prevents unnecessary calls from being continued. Since the called party status information is also displayed on the calling terminal when the called party is available, the calling party can easily obtain various information on the called party from the display. , Which are provided on some flights.

〔Example〕

 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a configuration diagram of a system to which a receiving terminal information display method according to an embodiment of the present invention is applied. In FIG. 1, 1,1 'represent a transmitting station and a receiving station, respectively.
2 'is an exchange switch, 3, 3' is a central control unit, 4, 4 'is a memory, 5, 5' is a calling / receiving terminal such as a telephone, facsimile, data terminal, 6, 6 'is a trunk for a call, 7 , 7 'represent a common line signal processor, 8 represents a communication path, and 9 represents a signal path. The common line signal processing units 7, 7 'select and send out a line for sending out the control signal generated by the central control unit 3, 3' of the station to which they belong, and a central control unit for receiving a control signal from another station. It has other functions. These are the logical configurations of the major parts of the switch connected using common channel signaling. That is, as the components of a general exchange, in addition to those shown in the figure, an external storage device,
Although there is a maintenance terminal or the like, it is omitted in this embodiment because it has no direct relation. As for the signal path 9, a common channel signal may be physically inserted into the communication path 8 as an example of the realization method, but logically, as shown in FIG. Thus, there is no difference that the common line signal processing devices of the exchanges facing each other are connected. This is the same when the exchange is connected via an upper network such as a public network by the ISDN interface.

FIG. 2 is a diagram showing an example of the configuration of a communication network when an exchange is connected via an upper network via an ISDN interface. 21,21 'indicates the originating station and the receiving station, respectively, and 2
2,22 'are exchange switches, 23,23' are central control units, 24,2
4 'is a memory, 25 and 25' are a sending terminal and a receiving terminal, respectively.
30 and 30 'indicate an ISDN interface, and 31 indicates an upper network. If the signal format provided by the upper network 31 has a function of transmitting user information transparently, the exchange 21 and the exchange 21 'need to communicate extended information to be added to a call control signal according to the present invention to be described later. Can be. Therefore, the communication network in which the exchanges are connected via the upper network such as the public network by the ISDN interface is equivalent to the communication network of the No. 7 common channel signaling system, and the present invention can be applied.

In the following description of the embodiments of the present invention, a communication network using a common channel signaling system will be described as an example.

Returning to FIG. 1, the terminals 5, 5 'shown in the figure are multifunctional telephones having a liquid crystal display function. Now, when the user of the terminal 5 '(called a called party) leaves to attend a meeting,
As shown in FIG. 3, first, the terminal 5 'is off-hook, a special number is dialed, and a terminal user state setting mode is set. Then, the user dials a number indicating his / her status. For example, if the number is "1" indicating the state of "meeting", dialing "1" registers the own state in the exchange. Next, the return date and time are input by the same dial. Furthermore,
If there is a message (response message), the mode is set to the message setting mode using the special number, and an appropriate message is selected from a predetermined number of fixed messages by dialing the number indicating the message. . As described above, the terminal user's status, message, etc. are input by number. Therefore, when this is sent to the destination exchange as will be described later, it is sufficient to notify this number, and when it is displayed, the number is stored in the memory. 4 may be converted to the text data stored.

As described above, the information of the called party input from the terminal 5 'is registered in the memory 4' of the exchange 1 '. FIG. 4 is a diagram showing a format when registered in the memory 4 '. In the area corresponding to the terminal number of the terminal 5 ', the user status number a indicating the status of the called party, the number a = 1 indicating "in a conference" in the above example, and the returning month, day, hour, and minute are indicated. Numbers b, c, d, and e, respectively, and number f, which indicates a response message
Is registered.

FIG. 5 is a sequence diagram showing a connection procedure when a user of terminal 5 calls a user of terminal 5 '. First, the extension terminal 5 accommodated in the exchange 1 of the calling station makes a call, and then the terminal 5 dials the access number of the called terminal 5 'accommodated in the exchange 1' of the called station. When the originating station 1 accepts the dialing of the terminal 5 and recognizes the connection request to the terminating station 1 'from the access number, the originating station 1 indicates the terminating request to the terminating station 1' to the terminating station 1 '. An address message (start signal, incoming call) is transmitted. At the receiving station 1 ', the central controller 3' determines the receiving terminal 5 'from the address message, and determines whether the receiving terminal is busy or idle, and whether the receiving terminal specifies the call based on a call control signal described later. Based on whether the disconnection of the communication path is specified, whether the incoming call is possible or not is analyzed. If the incoming call is possible, an address completion signal is output. ) To the calling station 1. At this time, the registration information of the called party is added to the address completion signal or the incomplete call reverse direction setting signal constituting the call control signal as follows. First, the central control unit 3 'of the receiving station 1' checks whether the user of the receiving terminal 5 'has registered his / her own information, and reads out the registration information if there is any. As shown in FIGS. 6 and 7, the address completion signal and the incomplete call reverse direction setting signal are set as parameters.

FIG. 6 is a parameter format diagram in the case of an address completion signal. In the signal display according to the CCITT recommendation part, bitH is used to define whether or not there is spreading information.
In this case, since there is extended information, that is, registration information of the called party, bitH is set to “1”. If there is no data, this is set to “0”. As the extended information, for example, the absence reason a of the called party is represented by 8 bits, and the return month, date, hour, minute b, c, d,
The message text size and the message text f are displayed as numbers in 8 bits and 8 bits × n, respectively.

In FIG. 6, each of b, c, d, and e is 8
It should be noted that although it is composed of bits, it is illustrated with a shorter length than the area a due to restrictions on the drawing.
The details of the CCITT recommendation part of the address completion signal are described on page 33 of "Signalling System No. 7".

FIG. 7 shows an incomplete call reverse setting signal UBM (unsuccessful
FIG. 7 is a parameter format diagram in the case of backward set-up information message), and particularly, as one example, unsu
Extended unsuccessful backward set-up informati in ccessful backward set-up information message
An example is shown in which on-message (EUM) is extended to carry information of a called party. As in the case of FIG. 6, the presence or absence of extended information is defined using bitH in the signal display according to the CCITT recommendation section. If there is extension information, that is, registration information of the called party, bitH is set to “1”; otherwise, bitH is set to “0”. The extended information part is the same as that of FIG.

For details on the EUM format, refer to “Signall
ing System No. 7 "on page 35. Briefly, the Octet indicator in the figure shows that bit D to
nsuccessful indicator, 0000 is spare,
0001 indicates subscriber busy, and 0010 indicates sp in the CCITT recommendation.
are, but in the present invention, this is used as the absence display. 0010 to 1111 is a spare. bitH ~ E columns are spa
Regarding re, in the present invention, bitH is used to indicate the presence or absence of registration information as described above.

FIG. 8 is a sequence diagram showing a connection procedure when a call cannot be received. In this case, the called station notifies the calling station with the called party information added to the EUM. The calling station displays the obtained recipient information on the calling terminal. Next, the originating station sends a disconnection signal CLF to the terminating station to restore (empty) the line. After confirming the restoration, the called station sends a restoration confirmation signal RLG to the calling station. When the address completion signal or the incomplete call reverse direction setting signal to which the extension information is added is notified to the calling station 1, the calling station 1 looks at the extended information and displays this information on the calling terminal 5. . For example, FIG. 9 shows a display example in which a call number display area of one column (displayed as “1” in the illustrated example) and a call state name display area of 12 columns (in the illustrated example).
CONNECTING (under connection), 14-column dial monitor display area (displayed as 862654 in the illustrated example), and 6-column received user state name display area (CONFERENCE (attending a conference) in the illustrated example) Display)
And a display area with detailed information of one column (*
When the user wants to know the detailed information, he / she performs a predetermined operation to display the date and time of returning. It should be noted that, in FIG. 9, the length of each area is not proportional to the number of columns due to the restrictions shown.

Depending on the state of the user of the receiving terminal 5 ', an address completion signal is returned, that is, a call state is entered, or an incomplete call reverse direction setting signal is returned, that is, a call is made without entering the call state. Whether to cut the communication path between the station and the receiving station can be determined by, for example, data shown in FIG. This is because, for example, as shown in FIG. 10, by setting one bit of the address storing the user state of the memory 4 to “1” or “0”, for example, if “1”, the user is temporarily away from the seat.
Incoming and outgoing calls, but if "0" is on a business trip,
It is determined that it is useless even if the call is made, and then the call is disconnected to make effective use of the communication path between the stations.

Next, another embodiment of the present invention will be described based on FIG. 11 and FIG.

In this embodiment, the information about the called party can be read without the calling party calling the called party (called terminal).

In FIG. 11, the caller informs the exchange that a call to the called terminal is unnecessary and that he / she wants to obtain only the information of the called terminal by a special number or the like at the time of dialing. The exchange sends out extended information, that is, an address message (activation signal) to which a parameter for requesting the return of only the destination terminal information without calling the destination exchange to the terminating exchange is added. This parameter is added in the present invention. Upon receiving this, the terminating exchange adds the terminating terminal information to a Facility Inform action (FAI) described later without calling the terminating terminal and returns the information to the originating exchange. The terminating terminal information is also added in the present invention. Next, the calling exchange displays the received terminal information obtained above on the calling terminal. Then, the disconnect signal CL
Send F from the calling station to the receiving station to restore the line (empty). After confirming the restoration, the called station sends a restoration confirmation signal RLG to the calling station.

FIG. 12 is a parameter format diagram of an address message. The first of the signal indications according to the CCITT Recommendation
BitH in the additional information display byte (column of bits A to H) is used to define whether or not there is extended information. For example, if there is extended information, “1” is set to bitH, and if not, “0” is set to bitH.
Facility information is displayed in 8 bits as extended information, and 0
In the case of (1), it is assumed that the call is an ordinary call (ordinary call). 2 to 255 are reserved.

FIG. 13 is a parameter format diagram of FAI. FAI
Is a signal added according to the present invention to the Telephone User Part of CCITT No. 7, and is defined as a national operation. Header0 uses 1100 and Header1 uses 0101. In the signal display according to the CCITT recommendation part, bitH is used to define whether or not there is extended information (inter-network call information). In this case, since there is extended information, that is, registration information of the called party, bitH is set to “1”. If there is no data, this is set to “0”. As in the case of FIG. 6, as the extended information, for example, the absence reason a of the called party is represented by 8 bits, the return month, date, hour, minute b, c, d, e is represented by 8 bits × 4, 8 bits and 8 bits. × n indicates the message text size and the message text f by numbers. The name and affiliation of the terminal user can be registered in the message text. The CCITT recommendation section will be briefly described. The H ₀ (header 0) field means that the heading code is H ₀ , and H ₁
(Header 1) field means that heading code is H _1. The inter-network call information display field is 1 byte, bits A to G are reserved, and bit H is used for indicating inter-network call information presence / absence as described above. The terminal number digit field is composed of 1 byte and represents the number of digits of the terminal number (extension number). The terminal number field consists of 3 bytes,
Indicates the terminal number. The terminal number digit field and the terminal number field are fields unique to FAI. Thus, it is shown in FIG. It is possible to obtain the called party information from the FAI to which the called party information has been added and display it on the calling terminal without calling the called terminal.

In the above-described embodiment, a telephone is taken as an example of a terminal, but other types of terminal equipment, such as a facsimile,
It goes without saying that the present invention can be applied to a case where a data terminal or the like is used.

〔The invention's effect〕

According to the present invention, when the user who uses the terminal is absent, it is possible to notify the caller of the absence, the reason, the return schedule, etc., so that the time of the caller and the effective use of the line can be achieved. The effect is as follows. Furthermore, a service that does not exist conventionally, that is, information of a called party can be obtained without calling a called terminal, can be obtained.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a communication network capable of displaying called terminal information according to one embodiment of the present invention. FIG. 2 is a configuration diagram of a communication network capable of displaying called terminal information according to another embodiment of the present invention. Figure 3 is the fifth
FIG. 4 is a flowchart showing a procedure for registering information from the terminal shown in FIG. 4, FIG. 4 is a format diagram for storing registration information in the memory shown in FIG. 1, and FIG. Sequence diagram showing the connection procedure of the method,
FIG. 6 is a format diagram for adding extension information to an address completion signal, and FIG. 7 is Extended unsuccess according to the present invention.
A format diagram for adding extension information to a ful backward set-up information message (EUM) signal. FIGS. 8 and 11 are sequence diagrams showing another embodiment of the present invention.
FIG. 10 shows a display example, FIG. 10 is a table diagram for distinguishing between calling and line restoration depending on the state of the called party, FIG. 12 is a parameter format diagram of an address message, and FIG. 13 is a parameter format diagram of FAI. 1,1 '... Exchange, 2,2' ... Exchange switch, 3,3 '...
Central control unit, 4,4 '... memory, 5,5' ... calling / receiving terminal, 6,6 '... talk trunk, 7,7' ... common line signal processor, 8 ... talk path, 9 …… a signal path.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H04M 3/00 H04M 3/16-3/20 H04M 3/38-3/58 H04M 7/00-7 / 16

Claims (8)

(57) [Claims] An originating exchange accommodating an originating terminal having a display unit is connected to a terminating exchange accommodating a receiving terminal, and when an incoming connection request is received from the originating terminal, the incoming connection is established. In response to the request, transmitting the user state information of the called terminal to the calling terminal, and displaying the user state information on the display unit of the calling terminal by transmitting the user state information. Registering user state information on the called side terminal and incoming / outgoing information set according to the user state information in the called side exchange, and receiving an incoming connection request from the calling side terminal. Determining whether or not an incoming call to the receiving side terminal is possible based on the incoming call availability information; and, when the incoming call availability information is available for receiving, the outgoing terminal and the outgoing terminal based on the incoming connection request. Connecting the receiving side terminal, calling the receiving side terminal, and transmitting the user state information to the originating side exchange; and Transmitting the user status information to the originating exchange without connecting to the destination terminal; and displaying the user status information transmitted from the originating exchange on a display of the originating terminal. And displaying information about the receiving terminal on the calling terminal. 2. The user status information includes the presence / absence / absence reason of the user of the receiving side terminal, and responds to the presence / absence / absence reason when receiving a connection request from the calling side terminal. The method according to claim 1, wherein the information on the incoming call terminal is set on the calling terminal by setting the incoming call permission information. 3. An incoming call exchange which accommodates an originating terminal having a display unit and an incoming exchange which accommodates an incoming terminal are connected, and when there is an incoming connection request from said originating terminal, the incoming connection is established. In response to the request, transmitting the user state information of the called terminal to the calling terminal, and displaying the user state information on the display unit of the calling terminal by transmitting the user state information. Means for storing user state information relating to the terminating terminal in the terminating exchange and incoming call availability information set in accordance with the user state information, and receiving a terminating connection request from the calling terminal. Means for judging whether or not an incoming call to the receiving side terminal is possible based on the incoming call availability information; and, when the incoming call availability information is available for receiving, the calling terminal and the incoming call based on the incoming connection request. Side edge And calling the called terminal, and transmitting the user state information to the calling exchange, and when the call acceptability information indicates that there is no incoming call, the calling terminal and the called terminal Means for transmitting the user state information to the originating exchange without connecting the terminal, and means for displaying the user state information transmitted from the originating exchange on a display unit of the originating terminal. A communication system, comprising: 4. The user status information includes the presence / absence / absence reason of the user of the receiving side terminal, and responds to the presence / absence / absence reason when an incoming connection request is made from the calling side terminal. 4. The communication system according to claim 3, wherein the incoming call availability information is set. 5. A transmission line connected to an originating exchange accommodating an originating terminal having a display unit and a receiving terminal are accommodated, and the transmission line is connected to the terminating terminal in response to an incoming connection request from the originating terminal. In the receiving side exchange transmitting the user state information to the originating exchange via the transmission path, and enabling the display of the user state information on the display unit of the originating terminal by transmitting the user state information. Switch means for transmitting a call signal between the called terminal and the originating exchange; and user state information relating to the called terminal and whether or not a call can be set according to the user state information. Memory means for storing information; means for determining the terminating terminal accommodated in the terminating exchange when the terminating connection request is transmitted from the originating exchange; and Means for judging whether or not an incoming call can be made; and when the incoming call availability information indicates that an incoming call is possible, the calling terminal and the called terminal are connected to each other based on the incoming connection request to call the called terminal. And, transmitting the user state information to the originating exchange, and when the incoming call availability information is an incoming or outgoing call, without connecting the calling side terminal and the receiving side terminal, the user state information is the Means for transmitting to the originating exchange. 6. The user status information includes the presence / absence / absence reason of the user of the called terminal, and responds to the presence / absence / absence reason when a call connection request is made from the calling terminal. 6. The exchange according to claim 5, wherein incoming call propriety information is set. 7. An originating terminal having a display unit, and receiving party status information transmitted to said originating terminal in response to an incoming connection request from said originating terminal. A receiving terminal device capable of displaying state information on a display unit of the calling terminal, a memory means for storing the called party state information and incoming call permission information set according to the called party state information. Means for judging whether or not an incoming call is possible based on the incoming call availability information; and when the incoming call availability information is incoming, calling a receiving terminal in response to the incoming connection request, and the called party status. Transmitting information to the originating terminal, and when the incoming call availability information indicates an incoming or outgoing call, making a line disconnection request without calling the receiving side terminal in response to the incoming connection request, State information Terminal device comprising means for sending to the calling terminal, in that it consists of. 8. The called party status information includes the presence / absence of the called party.
8. The terminal device according to claim 7, wherein when a call-in connection request is received from the calling terminal, the incoming call permission / prohibition information is set in accordance with the presence / absence / absence reason.