JP3167857B2 - Non-ringing incoming communication terminal - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-ringing incoming communication terminal, and more particularly, to a communication terminal for performing data communication or the like using both a packet switching network and a circuit switching network. While doing
The present invention relates to a non-ringing incoming communication terminal that realizes an incoming call without ringing when it is desired to communicate with the same communication terminal using a circuit switching service.

[0002]

2. Description of the Related Art INS which is an ISDN digital public network
The Net 64 (registered trademark) (hereinafter the same) service has two information channels (B channels), and can independently receive a circuit switching service and a packet switching service. After the call connection, the control channel (D channel) can also receive the packet switching network service. Conventionally, a circuit-switching terminal and a packet-switching terminal are independent and no integrated terminal is found, but in order to realize various multimedia services, an integrated circuit-switching / packet-switching terminal will be used in the future. Seems to appear. In general, a packet switching service of pay-as-you-go is advantageous for information having a small amount of information and intermittently generated information, and a circuit switching service is suitable for voice and video for which a delay in information arrival time is desired to be small. Therefore, a packet switching network is usually used, and a circuit switching network is used only when necessary.

[0003] In such a communication terminal that handles both packet-switched and circuit-switched information, for example, during data transmission using a packet-switched network, the receiving end communicates with the other party in real time. If you want to have a conversation, connect by circuit switching. In this case, the terminal of the other party already connected via the packet switching network will be called again,
There is a problem that it is troublesome for the called party to ring the incoming call and respond to it. In the case of remote monitoring, etc., consider the case where data is collected in the form of packets in the form of measured values, and when data is abnormal, monitoring is performed by video using circuit switching. It is inconvenient to ring.

[0004]

In order to cope with the above-mentioned case with the prior art, a method of adding an automatic answering device to the circuit switching interface of the integrated terminal is considered. However, the answering machine can be used by any caller,
Since all incoming calls are automatically answered unconditionally, the integrated terminal and channel are connected,
There is a problem that other terminals cannot be connected to the channel.

An object of the present invention is to provide an integrated circuit-switched / packet-switched terminal which is expected to appear as a multimedia terminal in the future while performing data transfer or the like using a packet-switched network. An object of the present invention is to realize an incoming call without ringing when communication with a communication terminal is desired, thereby avoiding annoying the receiving side.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a communication terminal which performs communication using both a packet switching network and a circuit switching network. Simultaneous connection means and packet switching network
More, when receiving means for receiving from the partner communication terminal, the call connection announcement packet by the call connection announcement packet added the caller's telephone number that there is an incoming call through the circuit switched network, circuit switched network Means for comparing the calling side telephone number at the time of the incoming call with the calling side telephone number of the call connection announcement packet, and receiving a call without ringing if they match. It is characterized by.

[0007]

According to the present invention, an incoming call from a circuit-switched network is transmitted from a communication terminal in a packet-switched service by a user data packet by utilizing the fact that it has a connection function of both a packet-switched network and a circuit-switched network. Notify in advance that there is
The notified communication terminal selectively causes only the incoming call from the caller to ring without ringing.

[0008]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of a non-ringing incoming communication terminal according to the present invention. In the figure, the non-ringing incoming communication terminal 10 includes an overall control unit 11, a packet generation unit 12, a packet analysis unit 13, a call connection notice calling side telephone number storage unit 1
4, a ring tone ringing section 15, a higher-level application interface section 16, a packet-switching line corresponding section 17, and a circuit-switching line corresponding section 18;
9 is connected. The packet switching line corresponding unit 17 is connected to the packet switching network (INS-P) 30 via the line 21, and the circuit switching corresponding unit 18 is connected to the line switching network (INS-C) 40 via the line 22. You.

FIG. 2 shows an example of a connection configuration of the present non-ringing incoming communication terminal (hereinafter simply referred to as a terminal). The terminal 10 has both an interface for the packet switching network service of the INS network 64 service and an interface for the circuit switching service, and uses, for example, two information channels (B1 and B2 channels). Communication terminal 1 via the packet switching network 30 and the circuit switching network 40.
Communication is possible simultaneously with 0 '.

In FIG. 1, the procedure when the terminal 10 connects to the opposite terminal via the packet switching network 30 and the procedure when the terminal 10 connects to the opposite terminal via the circuit switching network 40 are respectively described below. Since it follows the normal call connection procedure,
Here, an operation until the terminal 10 is connected to the opposite terminal via the circuit switching network 40 while the terminal 10 is connected to the opposite terminal via the packet switching network 30 will be described.

First, the operation in the case where the terminal 10 transmits a call connection notice packet and makes a call via the circuit switching network 30 will be described. In a state where the terminal 10 is connected to the partner terminal via the packet switching network 30 via the line 21, the control unit 11 adds the telephone number of the partner terminal via the data bus 19 from the higher-level application interface unit 16. When the received circuit-switched connection request is received, the packet generation unit 12 is instructed via the data bus 19 to create a call connection announcement packet by adding the telephone number of the other terminal. The packet generator 12 creates a call connection announcement packet in a user packet format from the telephone number of the other terminal and the telephone number of the terminal itself. FIG. 3 shows a configuration example of the call connection announcement packet. The control unit 11 extracts the call connection notice packet from the packet generation unit 12 and transmits the call connection notice packet to the partner terminal via the data bus 19, the packet switching line corresponding unit 17, the line 21, and the packet switching network 30. Then, a call is sent from the higher-level application interface unit 16 to the destination terminal designated via the line switching unit 18, the line 22, and the line switching network 40.

Next, the operation when the terminal 10 receives the call connection notice packet and receives a call from the circuit switching network 40 will be described. The control unit 11 of this terminal 10
When a packet is received via the line 0, the line 21, the packet switching line corresponding unit 17, and the data bus 19, the packet analysis unit 13 is instructed to analyze the received packet via the data bus 19. The packet analyzing unit 13 analyzes the received packet, and if the packet is a call connection announcement packet, the packet analysis unit 13 determines, via the data bus 19, the caller telephone number added to the call connection announcement packet. The data is transferred to the number storage unit 14 and stored, and the control unit 11 is notified of this fact. The control unit 11 includes a circuit switching network 40, a line 22,
Via the line switching line handling unit 18 and the data bus 19,
When there is an incoming call, the caller telephone number stored in the caller's telephone number storage unit 14 is read out via the data bus 19 and the caller telephone number received from the circuit switching network 40 is read out. The numbers are compared with each other.
5 is instructed via the data bus 19 not to ring. At the same time, the control unit 11
9. A call connection response is returned to the circuit switching network 40 via the circuit switching corresponding unit 18 and the line 22 and the data bus 19
Through the upper application interface unit 16
Is notified that the line is connected by the circuit switching network.

Note that the call connection advance notice calling side telephone number storage unit 1
4 and the calling telephone number stored in the circuit switching network 40.
If the calling telephone number is different from the caller's telephone number, the ringing tone ringing unit 15 is instructed to sound a ringing tone via the data bus 19, and whether or not the connection is made is determined by the instruction of the upper application interface unit 16. Will be followed.

Finally, as shown in FIG. 2, the terminal 10 ', which is the destination of the call connection announcement packet and is the destination of the call by the circuit switching network 40, responds to the call connection request by the circuit switching network 40. The operation when responding will be described. This terminal 1
When the control unit 11 of the caller 0 knows that the other terminal 10 ′ requesting the call connection has responded via the circuit switching network 40, the line 22, the line switching unit 18, and the data bus 19, To the upper application interface unit 16 via the network switching network 40.

[0016]

As described above, according to the present invention,
By notifying in advance that there is an incoming call from the circuit switching network by a user data packet from a communication terminal that is performing packet switching service, the notified communication terminal can selectively select only an incoming call from the caller. It is possible to make a call without ringing.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an embodiment of a non-ringing incoming communication terminal of the present invention.

FIG. 2 is a diagram showing an example of a connection configuration of the present non-ringing incoming communication terminal.

FIG. 3 is a diagram illustrating an example of a call connection announcement packet format.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Non-ringing incoming communication terminal 11 Control part 12 Packet generation part 13 Packet analysis part 14 Call connection advance notice Calling side telephone number storage part 15 Ringing sound ringing part 16 Upper application interface part 17 Packet switching line corresponding part 18 Line switching line Corresponding part 19 Internal data bus 21, 22 circuits 30 Packet switching network 40 Circuit switching network

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04L 12/00-12/28 H04L 12/50-12/66 H04L 13/02-13/18 H04L 29 / 00-29/12 H04M 11/00-11/10

Claims (1)

(57) [Claims] 1. A communication terminal that performs communication using both the packet switched network and the circuit switched network, means for simultaneous connection to both the packet switched network and the circuit switched network, from the packet switched network, via the line switching network Means for receiving from the destination communication terminal a call connection announcement packet to which the caller telephone number is added, and that a call is received from the circuit switching network when the call connection announcement packet is received. Means for comparing the calling side telephone number at the time of the incoming call with the calling side telephone number of the call connection announcement packet, and receiving a call without ringing when they match with each other. Incoming communication terminal.