JPH01303839A - Communication terminal equipment - Google Patents

Abstract

PURPOSE:To set all communication terminals connected to the same bus at a prescribed action mode with a simple operation by transmitting control information to a network with a bus as a destination, notifying an incoming call in a broadcast form from the network side, and setting the action mode by means of the control information when the control information is included in the incoming call. CONSTITUTION:When the control information to set the other communication terminal connected to the same bus at the prescribed action mode is transmitted to the network with the bus as the destination, the incoming call including the control information in the broadcast form is notified from the network side. By receiving such a incoming call, each communication terminal sets the action mode by means of the control information. Thus, the all communication terminals connected to the same bus can be set at the prescribed action mode by the simple operation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a communication terminal applied to a bus-type communication system.

(Conventional technology) In recent years, communication networks including new media have developed significantly.
A transition from analog communication to digital communication is being made in order to provide advanced and more diverse communication services.

The I5DN (Comprehensive Service Digital Network), which is currently being standardized internationally by the CCITT (International Telegraph and Telephone Consultative Committee), is a representative example of this, and is expected to become widespread in households in the future as a future communications network. is expected.

In this 15DN, communication networks that were previously independent for each terminal, such as telephone networks, data networks, and facsimile networks, are integrated into one network, and multiple communication channels are provided through one subscriber line. The development of a variety of services will be realized.

For example, the I5DN basic interface specified in the CCITT I series recommendations digitally multiplexes communication information in a specified format, allowing two information channels (one terminal A major feature is that three channels can be used simultaneously: one for inter-network information communication (84 kbps) and one signal channel (terminal-to-network control information 1 kbps).

Furthermore, the in-home system (CC) of this basic interface
ITT I Series Recommendation Interface Reference Point S/
7), it is possible to connect up to 8 various communication terminals on the same 4-wire transmission path.

Therefore, in a typical home, it is easy to install a telephone or the like in each room by wiring a bus-type transmission line in each room.

By the way, as mentioned above, when multiple terminals are wired in a bus type on the same subscriber line, multiple terminals are apparently connected to one subscriber number, so the above-mentioned l5DN basic interface , A simultaneous call receiving method is adopted for receiving calls.

Making calls using this simultaneous call receiving method using Figure 4,
The operation sequence for incoming calls will be explained.

First, on the calling side, the caller picks up the telephone handset (off-hook) and enters the number of the other party.
A signal called a "call setup" message is generated and sent to the network (switch) via the signaling channel described above. This "call setup" message contains a transmission function that specifies the telephone, a channel identifier that specifies the B1/B2 channel, and a called party number that indicates the called party's number, which are encoded in a prescribed format. When the network receives this "Call Setup" message, it refers to the called party number, selects the line of the called party, and sends a "Call Setup" message to notify the called party of the incoming call using a broadcast format signal. . Furthermore, addresses indicating the destination and source of various signal messages in addition to the "call setup" message are assigned in advance to each terminal on the calling side and the receiving side. This address is defined as an address (X) for broadcasting that does not specify the destination.

By the way, the signal channel is commonly used by all terminals connected in a bus to send and receive signal messages, so when a signal message is received from the network, the address of the own terminal and the signal are added to the signal message. If there is a mismatch, the signaling message is discarded. In addition, if the addresses match or if the broadcast format is used, the terminal performs an operation corresponding to the content as a signal message to its own terminal.

In Figure 4, the "Call Setup" message that notifies the called party of the incoming call is sent from the network using a broadcast format address (X), and is sent to three telephones connected to the called party via the bus (
(respectively assigned addresses 1, 2, and 3) simultaneously receive the "call setup" message and - all at once enter into call-terminating operation. In this case, each telephone now rings all at once to notify the user of the incoming call, and each terminal sends a "ringing" message to the network indicating that the called party is calling. At this time, the address 1.2.3 unique to each terminal is added to each "calling" message, so that the network temporarily stores the address of the terminal being called.

When the user picks up the handset from any one of the three phones that is ringing (in this case, the phone with address 3), an "answer" message is sent to the network to notify the user that the phone is accepting the call from that device. Sent.

When the network receives this "response" message, it sends a "response confirmation" message, and the above-mentioned information channel is exchanged between the calling and called parties, so that the telephones 3 on the calling and called parties enter into a conversation state. .

On the other hand, for telephones 1 and 2 that are ringing,
A "release" message to which each address is added is transmitted from the network side, and after receiving this, the telephone 1.2 stops ringing, transmits a "release complete" message, and returns to the ready state.

In this way, the simultaneous call reception method allows any terminal on the bus to accept calls, so in a typical home, users can pick up the phone no matter where they are in the room.
When used in an office, it is very convenient because anyone can pick up the phone from any phone on the same bus.

By the way, this simultaneous call reception method may cause the following inconvenience.

For example, in an office, when a call is received, all telephones connected to the bus ring all at once, which can be very annoying if the telephones are installed on adjacent desks.

To avoid this, it is conceivable to provide each telephone with a function of rejecting incoming calls, and to set all telephones other than those that accept incoming calls to the incoming call rejection mode in advance.

However, this method requires an operation to set each telephone to reject incoming calls one by one and an operation to cancel the setting, which is very troublesome.

This is true not only in the call rejection mode but also in various operation modes. In other words, when setting various service functions of a communication terminal, such as sending and forwarding, to a telephone, and when setting all telephones to the same operating mode, not just a specific telephone, it is necessary to perform the settings one by one. This is because.

(Problems to be Solved by the Invention) In such a communication system in which a plurality of communication terminals are connected to a private bus, when setting or canceling a predetermined service function (operation mode) for each communication terminal, It is necessary to perform operations individually for each communication terminal, which is extremely troublesome.

The present invention was made based on the above circumstances, and an object of the present invention is to provide a communication terminal that can set all communication terminals connected to the same bus to a predetermined operation mode by a simple operation.

[Structure of the Invention] (Means for Solving the Problems) The present invention is applied to a communication system in which incoming calls are notified all at once in broadcast format from the network side to communication terminals connected to the same bus. Control information for setting other communication terminals connected to the bus to a predetermined operation mode is transmitted to the network using the bus as the destination, and on the other hand, the network side notifies the incoming call in a broadcast format, and this incoming call includes the control information. When the control information is set, the operation mode is set according to the control information.

(Function) In the present invention, when control information for setting other communication terminals connected to the same bus to a predetermined operation mode is sent to the network using the bus as the destination, the network sends the control information to the bus in a broadcast format. An incoming call containing control information is notified. When each communication terminal receives such an incoming call, it sets an operation mode based on the control information. Therefore, all communication terminals connected to the same bus can be set to a predetermined operation mode with a simple operation.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a sequence showing the operation mode setting operation of a bus type communication system to which the present invention is applied.

FIG. 1 shows a case where telephones 1, 2, and 3 are connected to the same bus, and the operating modes of telephones 1 to 2, 3 are set to a call rejection state.

First, telephone 3 connects to another telephone 1 on the same bus.
Perform the key operation to set 2 to reject incoming calls. This key operation can be performed with a one-touch operation using a dedicated key (if the phone has this function), or by operating a dial key and inputting a predetermined function code. can.

By this operation, telephone set 1 transmits a "call setting" message to the network with its own station (bus) as the destination.

The "Call Setup" message is sent to the CCI as shown in Figure 2.
It has the structure of outgoing and incoming messages as specified in TT Recommendation Q.931.

The "call setup" message specified in the same recommendation includes a call setup indicating that it is a "call setup" message, a transmission function specifying voice/audio/unrestricted digital, Bl/B
The channel identifier specifying the 2/D channel and the called party number indicating the other party's number are encoded in a specified format, and control information can be transferred transparently between users, that is, between terminals.
Can contain user information. This user-to-user information can be exchanged in any format determined in advance by the terminal, and in this embodiment, this is used for control information.

Now, when the telephone set 3 sends the "call setting" message to the above-mentioned network (FIG. 1), it is assumed that the telephone 3 includes user-to-user information in the "call setting" message. At this time, the user-to-user information is information that causes the terminal that receives this "call setup" message to set its own terminal to reject incoming calls, and the called number, that is, the other party's number, is that of its own station, that is, all terminals on the same bus. . Note that in this case, there is no need for voice communication on the B channel, so the B channel is designated as absent.

The network that receives this ``Call Setup'' message notifies the called party of this ``Call Setup'' message in the same way as normal exchange processing. This ensures that the said "Call Setup" message with the broadcast format address (X) is sent to the destination, that is, each telephone 1.2 connected to the bus, including the terminal (telephone 3) that issued this "Call Setup" message. Received at .3.

When each telephone 1.2.3 identifies that the "call setup" message contains user-user information,
Set the own terminal to the operation mode specified by this user/user information. In this case, since incoming call rejection is specified, telephone set 1.2 enters the incoming call rejection state. However, the telephone set 1 that sent this "call setting" message discards the received "call setting" message.

Thus, telephone 1.2 is set to call rejection mode, and telephone 3 is set to normal operation mode.

FIG. 3 shows the sequence of the incoming call operation after the operation mode is set as described above.

As shown in FIG. 3, a call setting indicating an incoming call is notified from the calling side's telephone to the called side as a "call setting" message in broadcast format. As a result of receiving this "Call Setup" message, the telephone 1.2 which is set to call rejection mode will receive "Call Setting" message.
Ignoring the "Call Setup" message, the telephone set 3, which is set to normal operation mode, sounds a ring tone and simultaneously sends out a "Call" message.

When the user of the telephone 3 picks up the handset, a "response" message is sent via the network to the calling telephone to notify that the telephone 3 accepts the incoming call, after which the call state is entered.

In this way, conventionally, in a simultaneous call type communication system, when setting multiple bus-connected terminals to a predetermined operation mode, it was necessary to perform, for example, a key operation on each terminal one by one. However, according to this embodiment, the operation mode of another terminal can be easily set from any terminal.

In the above-described embodiments, a case has been described in which the operation mode is set to incoming call rejection mode, but this can also be applied to mode settings of various terminal functions. For example, it is also possible to set the call forwarding mode. It is also possible to simply set the ringtone to be prohibited.

[Effects of the Invention] As described above, according to the present invention, all communication terminals connected to the same bus can be set to a predetermined operation mode by a simple operation.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the operation sequence of a terminal in a bus-type communication system according to an embodiment of the present invention, FIG. 2 is a diagram showing the structure of a "call setup" message, and FIG. 3 is a diagram showing the bus-type communication system according to this embodiment. System's call originating/receiving operation sequence: FIG. 4 shows the call originating/receiving operation sequence of a general bus type communication system. Applicant Toshiba Corporation Patent Attorney Sasa Suyama - Figure 1

Claims (1)

[Claims] Multiple communication terminals are connected to the same bus connected to the network,
In a communication terminal applied to a communication system in which incoming calls are notified all at once from the network side in a broadcast format to these communication terminals connected to the same bus, other communication terminals connected to the same bus are set to a predetermined operation mode. means for transmitting control information to the network with the bus as the destination, and when an incoming call is notified from the network in a broadcast format and the incoming call includes the control information, an operation mode is set according to the control information. A communication terminal having means for.