JPH02281854A - Terminal equipment - Google Patents

Abstract

PURPOSE:To simply constitute the sub-network without providing a private exchange, etc., by regulating a virtual hierarchical relation between respective terminal equipments connected to a communication network, and constituting the sub-network by utilizing the simple additional information of a control channel. CONSTITUTION:A service integrated digital network(ISDN) terminal equipment 41 is provided with a storage part 45 for storing a virtual hierarchical relation in a sub-network and what kind of information the ISDN terminal equipment of each hierarchy has. Information stored in this storage part 45 is added to call processing information as inter-user simple information of a D channel by an information adding part 46 at the time of calling in accordance as necessary. In this state, by transmitting/receiving these pieces of information, the sub-network having a hierarchical structure is constituted between respective terminals. In such a manner, the sub-network can be formed simply in the communication network without providing a special exchange, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention is applicable to a communication network including a channel for transmitting and receiving communication information between a plurality of terminal devices and a control channel for controlling communication, such as an 15DN public network. The present invention relates to a terminal device connected to a network, and particularly to a terminal device that can configure a subnetwork using simple information between users on a control channel.

[Conventional technology]

L5DN (Integrated Service Digital Network) is a new telecommunications network system that is compatible with the highly information-oriented society. 15DN is a new technology for telephone, facsimile,
A network that provides comprehensive communications services by integrating various types of communications such as data communications networks and image communications. Further, subnetworks may be formed within the 15DN public network to provide additional services.

FIG. 5 shows a conventional subnetwork formed within the 15DN public network using private exchanges.

A private exchange 15, such as a private branch exchange (PBX), is connected to the 15DN public network 11 via lines 12, 13, and 14. The private exchange 15 has subscriber terminals 17 to
22 are connected. A subnetwork is formed by these subscriber terminals 17 to 22 and private exchanges.

In some cases, a host station is installed on the 15DN public network, and terminals are arranged in a star shape around this host station to form a subnetwork.

FIG. 6 shows a subnetwork formed using such host stations.

In this subnetwork, a host station 31 is installed on the l5DN public network 11, and this host station 31 and subscriber terminals 32
-42 are connected by subscriber lines 322-42a, respectively.

[Problem to be solved by the invention]

Formation of a subnetwork using a private exchange as described above requires preparation of new software for controlling the power installation of the exchange and the subnetwork. Furthermore, l5
Since the connection with the DN must go through a limited line, there is also a drawback that the amount of communication and the services that can be used are limited.

In addition, when forming a network with terminals arranged in a star shape around a host station, all communications are performed face-to-face with the host, so once a certain number of connections have been made, access from other terminals becomes impossible. It's gone. Furthermore, it is not possible to perform operations such as hierarchically grouping and handling terminals.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a terminal device that can form a subnetwork within a communication network without providing a special exchange or the like.

[Means to solve the problem]

The terminal device of the present invention includes (i) call processing information on a control channel provided separately from a channel for transmitting and receiving communication information in order to control communication between a plurality of terminal devices constituting a communication network; an information analysis means for analyzing the contents of the user-to-user simple information; storage means; (iii
) information addition means for adding the information stored in the storage means to the call processing information as simple information between users of the control channel as necessary; and (iv) control added by the information addition means or analyzed by the information analysis means. The apparatus includes call processing requesting means for requesting a communication network to perform call processing based on channel call processing information and user-to-user simple information added to the channel call processing information.

That is, the terminal device of the present invention stores a virtual hierarchy between terminals and additional information such as call processing information and simple information, and transmits and receives this information as simple information between users on a control channel. A sub-network with a hierarchical structure is constructed between them.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to Examples.

FIG. 1 conceptually shows the configuration of a terminal device in an embodiment of the present invention that is connected to an I5DN public network as a communication network.

The l5DN terminal device 41 is equipped with an l5DN standard user/network interface 42 and is connected to the l5DN public network 11 through a subscriber line 43. When a call arrives from the L5DN public network 11 to the L5DN terminal device 41 via the subscriber line 43, the information analysis unit 44 uses the control channel, that is, the D channel specified by the International Telegraph and Telephone Consultative Committee (CCI TT). The content of simple information between users is analyzed.

The l5DN terminal device 41 includes a storage unit 45 that stores virtual hierarchical relationships within the subnetwork and what kind of information the l5DN terminal devices in each layer have. The information stored in the storage section 45 is added to the call processing information as D channel user-to-user simple information by the information addition section 46 when a call is made, as necessary. Furthermore, l
The 5DN terminal device 41 is equipped with a call processing request section 49, and requests call processing to the 15DN public network 11 based on information added by the information analysis section 44 or the information addition section 46.

These information analysis section 44, information addition section 46, and call processing request section 49 are controlled by a central control section (CPU) 50 that is normally installed in the I5DN terminal device 41.

Next, the l5DN in this embodiment configured as described above
An I5DN subnetwork formed using the terminal device 41 will be explained.

FIG. 2 shows the l5DN terminal device 41 of this embodiment.
This shows a state in which a virtual subnetwork is formed by connecting to the public network 11.

The virtual subnetwork 51 is formed by a plurality of I5DN terminal devices 53 to 68.

These l5DN terminals! 53 to 68 are connected to the I5DN public network 11 through subscriber lines 53 a to 58 a, respectively. In addition, the l5DN public network 11 is an l5DN terminal device 69.70.71 that does not form the subnetwork 51.
and are connected by subscriber lines 69a, 70a, and 71a.

l5DN terminal device 53 forming subnetwork 51
to 58 are virtual lines 53b and 53 indicating virtual dependency relationships.
c, 53d, 53e, 54b, 54c, 54d, 58b
, 58c, 58d, 62b.

They are connected to each other by 62 c, 62 d, 66 b, and 66 c.

FIG. 3 shows a virtual hierarchical structure within the subnetwork 51 of FIG. 2. Components that are the same as those in FIG. 1 are designated by the same reference numerals, and their description will be omitted as appropriate.

The l5DN terminal device 53 functions as a parent terminal within this subnetwork 51, and the l5DN terminal device 54.5
8.62.66 as a virtual child terminal as a virtual line 54
b, 58b, 62b, and 66b.

The l5DN terminal device 54, which is a virtual child terminal, further includes the l5DN terminal device 1f55.56. which is a virtual grandchild terminal.
57 via virtual lines 54b, 54c, and 54d, forming a further lower subnetwork 72. Similarly, the l5DN terminal device 58, which is a virtual child terminal, is connected to the l5DN terminal device 59.60.61, which is a virtual grandchild terminal, through virtual lines 58b158c and 58d, forming a lower subnetwork 73. There is. The l5DN terminal device 62 is a virtual grandchild terminal, the l5DN terminal device 63.
The l5DN terminal device 1f66 is connected to the l5DN terminal device 67.68 via virtual lines 66b, 66c, forming a lower subnetwork 74. 75 is formed.

The hierarchical relationship between the I5DN terminal devices 53 to 68 is stored in each storage unit 45.

Virtually layered subnetwork 5 as described above
1 into one corporate entity and further sub-network 72
．． It is possible to apply 73.74.75 to the head office, branch office, etc. of a corporate entity that exists distributed in the space on the 15DN public network 11. Furthermore, if the virtual hierarchy is set to two levels, star combination is also possible.

Next, call connections between the I5DN public network 11 and the subnetwork 51 will be described.

FIG. 4 shows the call processing and data flow within the sub-network 51 which is virtually hierarchical as shown in FIG.

l5DN public network 11 that does not form subnetwork 51
When accessing the subnetwork 51 from an I5DN terminal device such as the I5DN terminal device 69, the representative number of the subnetwork 51 is given to the I5DN terminal device 53. When the 15DN terminal device 53, which virtually functions as a parent terminal, receives an incoming call, the information analysis unit 44 analyzes the calling party number of the D channel, and also stores information on how to process the received call in the storage unit. Analyze based on 45.

For example, the 15DN terminal device 54 to which the received call is a child terminal
If the call should be forwarded to the l5DN terminal 5.4
Transfer to. If predetermined information to be added to the storage unit 45 of the I5DN terminal device 53 is stored at the time of transfer, the information addition unit adds predetermined additional information 81 to the call and transfers the call.

When the ISDN terminal device 54 receives the call transfer from the 15DN terminal device 53, the information analysis section 44 analyzes the additional information 81 and the contents of the storage section 45, and if necessary, adds additional information 82 to create a virtual The call is transferred to the 15DNI terminal device 55, which is the grandchild terminal.

Transfer of the call from the 15DN terminal device 53 to the 15DN terminal device 54 is performed via subscriber lines 53a and 54a connected to the 15DN public network 11 shown in FIG. Similarly, a call is transferred from the 15DN terminal device 54 to the 15DN terminal device 55 via the subscriber lines 54a and 55a. This transfer is virtually performed via virtual lines 53b and 54b that are hierarchically connected as shown in FIG. Additionally, additional information 81.82 is l5DN public network 1
1 is added to the call processing information of the D channel.

Next, mutual communication within the sub-network 51 will be explained. For example, when the 15DN terminal device 56, which is a grandchild terminal, wants to use a specific database existing in the subnetwork 51, the information addition unit 46 uses the request information 83
is added to the call processing information of the D channel, and the child terminal l
A call is made to the 5DN terminal device 54. l5DN that received the call
The terminal device 54 stores the request information 83 and the storage unit 44.
Analyze the content of. The l5DN terminal device 54 connects to the upper layer l5DN terminal device 53 or the lower layer l5DN terminal device 54 as necessary.
5DN terminal equipment 55.57 via virtual circuit 53b, 54b or 54d. For example, the upper layer l
When the call is transferred to the 5DN terminal device 53, after performing a similar analysis, request information 84 is added and the call is transferred to the 15DN terminal device 58, 62 or 66, which is another call terminal.

After the call processing is completed, data transmission/reception or telephone conversation according to the request information 83 is executed.

This data transmission and reception may be performed on the D channel by packet switching, or may be performed by circuit switching or packet switching of the B channel.

The l5DN terminal device 53 which is the upper parent terminal or the l5DN terminal device 54.58.62.66 which is the child terminal,
Equipped with respective processing software, for example, in the case of voice communication, it analyzes the caller's number and identifies the department and person's name.
Services such as displaying on 5DN terminal devices are possible.

It is also possible to search for information by providing a database in the l5DN terminal device 53 that is the parent terminal or the rSDN terminal device 541.58.62.66 that is the child terminal. Furthermore, it is also possible to have a configuration in which each layer has a database and obtain detailed data from the lower layer I5DN terminal device. Note that when receiving a service within the subnetwork 51, it is not necessarily necessary to make a call to the upper layer; if the I5DN terminal device that can receive the service is known in advance, the call is made directly to that I5DN terminal device. It is also possible to call.

〔Effect of the invention〕

As described above, according to the present invention, a virtual hierarchical relationship is defined between each terminal device connected to a communication network, and a subnetwork can be configured using simple additional information of a control channel. Not only does it not require the installation of a switch, it also allows subnetworks to be configured without restrictions on communication volume or services. In addition, it is possible to flexibly configure subnetworks, such as by layering and grouping terminal devices, or by expanding them two-dimensionally and star-coupling them.

[Brief explanation of drawings]

Figures 1 to 4 are for explaining one embodiment of the present invention, of which Figure 1 is a block diagram showing the configuration of a terminal device, and Figure 2 is a block diagram showing the configuration of a terminal device. Figure 3 is a configuration diagram showing the virtual hierarchical structure within the subnetwork, and Figure 4 shows the call processing within the subnetwork. These are state diagrams showing the flow of data. Fig. 5 is a state diagram of a conventional subnetwork formed within the 15DN public network using a private exchange, and Fig. 6 is a state diagram of a conventional subnetwork formed using a host station. 41...Terminal device, 44...Information analysis section, 45...Storage section, 46...Information addition section, 47 . . . Call processing request unit, 53-6 8 . . . ■ DN terminal device.

Claims (1)

[Claims] In order to control communications between a plurality of terminal devices constituting a communication network, call processing information of a control channel provided separately from a channel for transmitting and receiving communication information, and a user added thereto. an information analysis means for analyzing the content of simple information; a storage means for storing virtual hierarchical relationships with specific other terminal devices and what kind of information the terminal devices in each hierarchy have; information addition means for adding the information stored in the means to call processing information as simple inter-user information of the control channel as necessary; A terminal device comprising: call processing requesting means for requesting call processing to the communication network based on processing information and simple inter-user information added to the processing information.