JP2983029B2 - Network termination device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial applications]

The present invention relates to a network terminating device serving as an interface between a home bus and outside the home.

2. Description of the Related Art FIG. 3 is a block diagram showing a configuration of a conventional network terminating device disclosed in, for example, Japanese Patent Application Laid-Open No. 63-198442, wherein 1 denotes one or more coaxial cables and A home bus comprising one or a plurality of pairs of wires and comprising an information channel for data transmission and a control channel for transmitting management data of a transmission path, a home bus controller 2 for managing the home bus 1, a home bus controller 3, Is a telephone line interface for managing telephone line lines, 4 and 6 are home bus interface units for communicating with terminal devices on the home bus 1, and 5 are communication units outside the home via a CATV line or the like. An outside-home communication interface for performing the operation, 7 is a home bus bidirectional distributor, 8 is a communication line such as a CATV line, and 9 is a telephone line. Next, the operation will be described. First, a connection request with the home bus 1 arrives at the out-of-home communication interface 5 from the out-of-home communication line 8 such as a CATV line. In the case of the telephone line 9, a BT (Bertoon) corresponding to the connection request arrives at the telephone line interface 3. Next, the out-of-home communication interface 5 or the telephone line interface 3 is connected to the home bus interface units 4 and 6.
And issues a command to use the information channel to the home bus controller 2 via the home bus bidirectional distributor 7. When the home bus controller 2 receives the information channel use request command, if the information channel is available at that time, the home bus controller 2 sets the information channel use permission command and the channel number of the information channel to be used to the interface unit that issued the request command. Return to 4 or 6. Upon receiving the information channel use permission command, the external communication interface 5 connects the communication line 8 such as a CATV line to the information channel of the home bus 1 and simultaneously issues a connection completion notification to the home bus 1 to the data source. Thereafter, communication between the communication line 8 such as a CATV line and the terminal device on the home bus 1 via the home bus 1 is started. In the case of an incoming call from the telephone line 9, when the telephone line interface 3 receives the information channel use permission, the telephone line 9
Is connected to the home bus 1, the telephone on the home bus 1 is connected to the telephone line 9, and the same operation as a normal telephone is continuously performed. When terminating the communication, the terminal device on the communication line outside the home or the terminal device on the home bus 1 issues a communication end command to the home bus controller 2 to release the information channel.

[Problems to be solved by the invention]

Since the conventional network terminating device is configured as described above, in the existing home bus system including a home bus system and a home telephone system connected to the home bus and a telephone main unit for receiving a telephone line, etc. ,
No-ringing communication (data transmission) using telephone line
In order to receive the call, the telephone line is simply connected to the telephone, so that switching between the no-ringing communication (data transmission) and the telephone call cannot be performed. In addition, there is a problem that the function of the telephone main unit connected to the existing home bus system is duplicated, which causes a malfunction and increases the cost. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. In the case of no-ringing communication (data transmission) using a telephone line, the present invention enables no-ringing communication outside the home, and It is an object of the present invention to obtain a network terminating device that enables a telephone call on a home bus.

[Means for Solving the Problems]

The network termination device according to the present invention allows the telephone line interface to identify telephone communication data or non-ringing communication data for a signal received from the telephone line, and outputs the result as identification information. A telephone line connection request signal for requesting connection of a telephone line interface to a telephone line in a house based on
An information channel connection request signal for requesting connection of the home bus to the information channel is output to the circuit switching switch, and when requesting connection to the information channel, the interface unit is requested in advance to allocate the home bus information channel. An assignment request signal is output. In response to the input of the allocation request signal, the interface unit uses the control channel of the home bus to allocate the use of the information channel for the telephone line connection. The circuit switching switch connects the telephone line interface to the telephone line in the house in the case of the telephone line connection request signal and the telephone line in the case of the information channel connection request signal based on the request signal from the controller. It connects the interface to the information channel.

[Operation]

In the network terminating device according to the present invention, when the signal received from the telephone line is telephone communication data, the circuit switching switch that has input the telephone line connection request signal from the controller connects the telephone line interface and the telephone line. By that
When a telephone call is enabled and the signal received from the telephone line is no-ringing communication data, the circuit-switched switch to which the information channel connection request signal is input from the control after the use assignment of the interface unit is executed is performed. By connecting with
Enables no ringing communication.

【Example】

An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes one or a plurality of coaxial cables and one or a plurality of pairs of wires, and transmits an information channel 1a for data transmission outside the home and transmission line management data. Home bus consisting of a control channel 1b
10 is a telephone line connecting to the telephone main unit on the home bus,
11 is a telephone line, 12 is a telephone line interface for identifying whether data input from the telephone line 11 is non-ringing communication data or a telephone call, and 13 is a controller.
When a telephone line connection request signal from 15 is input, the telephone line interface 12 and the telephone line 10 are connected, and when an information channel connection request signal is input, the telephone line interface 12 and the information channel 1a are connected. When the switch 14 receives an allocation request signal from the controller 15, the interface unit 15 for allocating use of the information channel 1a using the control channel 1b is connected to the telephone line interface 12
Based on the identification information input from, a telephone line connection request signal for requesting connection of the telephone line interface 12 to the telephone line 10, or an allocation request signal for requesting use allocation of the information channel 1a, This is a controller that outputs an information channel connection request signal for requesting connection of the telephone line interface 12 to the information channel 1a. Next, the operation will be described with reference to the state transition diagram of FIG. First, in the case of a telephone call, data input from the telephone line 11 is identified by the telephone line interface 12, and the controller 15 sends a request for connection to the telephone line 10 to the circuit switch 13 according to the identification information. (State b, the interface unit 14 does not operate at this time). When the connection is completed, the telephone line interface 12 receives the transmission request (state c) and outputs a telephone call to the circuit switching switch 13. The circuit switch 13 outputs a telephone call to the telephone main unit on the home bus 1 via the telephone line 10. When the call is completed, a line disconnection request from the telephone line interface 12 is received (state d), and the line switch 13 disconnects the line and returns to the state without communication (state a). Next, in the case of no ringing communication (data transmission), data input from the telephone line 11 is identified by the telephone line interface 12, and the controller 15 allocates the information channel 1a to the interface unit 14 according to the identification information. A connection request to be output is output (state e). This interface unit 14 controls the control channel 1b of the home bus 1.
Is used to allocate the information channel 1a. Similarly, the controller 15 outputs a request for connection to the information channel 1a to the circuit switching switch 13 (state f). When the connection is completed, the telephone line interface
A transmission request is output to state 12 (state g). The telephone line interface 12 transmits data to the information channel 1a via the circuit switching switch 13 and causes a predetermined information terminal device to receive the data, thereby performing no-ringing communication. When the data transmission is completed, a line disconnection request is transmitted from the telephone line interface 12 to the line switching switch 13 (state d), and the line switching switch 13 disconnects the line, thereby causing no communication (state a). Return to

【The invention's effect】

As described above, according to the present invention, in the telephone line interface, a signal received from the telephone line is identified as telephone communication data or no ringing communication data, and the result is output as identification information. A telephone line interface based on the identification information;
Alternatively, a telephone station line connection request signal and an information channel connection request signal for requesting connection to one of the information channels are output, and when a connection to the information channel is requested, an allocation request for requesting the interface unit to use the information channel in advance. Output a signal. The interface unit uses the control channel of the home bus to allocate the use of the information channel by inputting the allocation request signal, and the circuit exchange switch inputs the telephone line connection request signal to the telephone line interface and the telephone line. When an information channel connection request signal is input, the telephone line interface and the information channel are connected, so that the existing home bus telephone home bus system can be used to connect to the outside of the home by no ringing communication. Extensions such as enabling transmission are possible, and extension of communication using a telephone becomes possible because the telephone transmission line of the home bus is not occupied during data transmission on the home bus.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of a network termination device according to one embodiment of the present invention, FIG. 2 is a state transition diagram of a controller in the network termination device according to one embodiment of the present invention, and FIG. FIG. 2 is a block diagram illustrating a configuration of the device. In the figure, 1 is a home bus, 12 is a telephone line interface, 13 is a circuit switching switch, 14 is an interface unit, and 15 is a controller. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

(57) [Claims] 1. A network termination device which connects a home bus comprising an information channel for data transmission and a control channel for transmitting management data of a transmission line, and receives a signal received from a telephone line in a network termination device serving as an interface with outside the home. A telephone office line interface for identifying whether it is telephone communication data or no ringing communication data and outputting it as identification information; and a telephone call to the telephone office line based on the identification information input from the telephone office line interface. A controller for outputting an office line connection request signal or an allocation request signal for requesting allocation of the home bus to the information channel, and outputting an information channel connection request signal to the home bus information channel; and When the above allocation request signal is input, the information is transmitted using the control channel of the home bus. An interface unit for allocating the use of a channel; and inputting the telephone line connection request signal from the controller to connect the telephone line interface to the telephone line. And a circuit switching switch for connecting the telephone line interface and the information channel when the information channel connection request signal is input from the network terminating device.