JPS5857941B2 - Information processing network system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an information processing network system in which an incoming call can be accepted even during a period when a timer is operating in order to perform a re-call.

In a packet-switched network, when one information processing device communicates with another information processing device, when one information processing device sends out a calling packet and the other information processing device returns an incoming call acceptance packet, A packet-switched network connects the two with a logical path (virtual call VC).

If the other information processing device is in a state where it cannot accept an incoming call, it sends a disconnection request packet indicating that it is not ready, and in response to this, the network disconnects the one information processing device. Sends an instruction packet.

Upon receiving the disconnection instruction packet, one of the information processing devices analyzes the reason in the disconnection instruction packet and determines whether to call again or terminate the call.

When making a re-call (in this case, a timer is set, and when a timeout occurs, the other information processing device is designated again and the calling packet is sent to the network).

The number of calls made is generally limited, for example, from two to several times.

A conventional information processing network system in which two information processing apparatuses communicate with each other via a network is configured not to accept an incoming call while one of the information processing apparatuses is in the process of making a call.

In this conventional method, even though the called party indicates that communication is not possible, a logical path is not immediately set up between the two parties, and the setting of the logical path is delayed until the time of re-calling. This will unnecessarily increase the burden on the information processing device.

The present invention aims to eliminate the above-mentioned drawbacks, and aims to provide an information processing network system that can significantly reduce the burden required for setting logical paths.

Therefore, in the information processing network system of the present invention, at least two information processing devices are linked via a packet switching network, and the packet switching network
An information processing network system is configured such that when one information processing device sends a calling packet and the other information processing device returns an incoming call acceptance packet, the two are connected by a logical path. The information processing device on the calling side includes an information processing unit, a call control unit, an incoming call control unit, and a timer control unit, and the information processing unit receives a disconnection instruction packet as a response to the call packet. If it is determined that the call should be made again, the timer control unit is activated for a predetermined time limit, and the timeout is set for the call control unit. When this happens, it instructs that a calling packet should be sent again with the same destination information processing device as the destination, and at the same time tells the incoming call control unit the address of the destination information processing device. The call control unit is configured to instruct that an incoming call based on the call should be accepted, and when the timer control unit outputs a timeout, the call control unit sends a call packet destined for the other party's information processing device, and The incoming call control unit is configured to send an incoming call acceptance packet when there is a request to send out an incoming call acceptance packet from the incoming call control unit. When an incoming call packet is sent based on a call originating from the information processing device, it requests the call control unit to send an incoming call reception packet and also reports to the information processing unit that there has been an incoming call. It is characterized by being configured as follows.

Hereinafter, the present invention will be explained with reference to the drawings. FIG. 1 is a block diagram of one embodiment of the present invention, and FIG. 2 is a diagram explaining the present invention in detail.

In FIG. 1, 1.1 is a packet switching network, 2 is an information processing device, 3 is a transmission control unit, 4 is a reception control unit, 5 is a timer control unit, 6 is a call control unit, 7 is a reception control unit, and 8 indicate information processing units, respectively.

A packet switching network 1 is a network between two information processing devices that communicate with each other (
This logical path is set, and the information processing device 2 includes an information processing section such as a computer.

The transmission control section 3 is a section that sends information onto the line, and the reception control section 4 is a section that receives information on the line.

The timer control unit 5 performs various time monitoring.

The call control unit 6 generates packets such as a call CR and disconnection request CQ requested by the information processing unit 8 and a call reception CA requested by the incoming call control unit 7.

The incoming call control unit 7 receives a disconnection instruction CI, an incoming call CN, and a connection C.
Analyzes packets such as C and sends the results to the information processing unit 80.
This is to be notified.

Next, the operation of one embodiment of the present invention will be explained with reference to FIG.

When information processing device A communicates with information processing device B, information processing device A specifies information processing device B and sends a call packet 1-
The CR is sent to network 1.

Upon receiving this packet, the packet network 1 sends an incoming call packet cN to the information processing device B.

When the information processing device B is not ready, it either sends the disconnection request packet CQ to the packet network 1 or remains unresponsive.

When the packet network 1 receives this packet, it sends a disconnection instruction packet CI to the information processing device A.

This packet 1-CI includes the reason for disconnection.

When the information processing device A receives the disconnection instruction packet 1-CI, it analyzes the reason contained therein and determines whether to terminate the call or re-call.

When it is determined that the call should be made again, the information processing unit 8
The call controller 5 sets a predetermined time limit, instructs the call control unit 6 to send the call packet CA again when a timeout occurs, and at the same time sends the call control unit 7 to the information processing device. It tells the address of information processing device B and instructs that the incoming call based on the call originating from information processing device B should be accepted.

Under the above conditions, information processing device B becomes ready and sends out a calling packet CR specifying information processing device A. Then, the incoming call control unit 7 of the information processing device A immediately requests the outgoing call control unit 6 to send out an incoming call acceptance packet CA, and at the same time, processes information indicating that there is an incoming call from the specified partner station along with its address. Report to Department 8.

When one of the two communicating information processing devices makes a call and the other one accepts the call, the packet switching network 1 establishes a logical path between the two.

For a predetermined period of time (if there is no incoming call based on the call originating from information processing apparatus B, information processing apparatus A again sends out calling packet 1-CR).

As is clear from the above description, according to the present invention, when a re-call is made, the call is immediately received on the condition that there is an incoming call based on a call from the other party's information processing device while the timer is operating. Since the call is accepted, the burden associated with re-calling can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the present invention, and FIG. 2 is a diagram explaining the present invention in detail. DESCRIPTION OF SYMBOLS 1...Packet switching network, 2...Information processing device, 3...Transmission side leg, 4...Reception control unit, 5... ...Timer control section, 6...
・Call control unit, 7... Incoming call control unit, 8...
...Information processing department.

Claims (1)

[Claims] 1 At least two information processing devices are linked via a packet switching network, and the packet switching network is configured such that one information processing device sends outgoing call packets and the other information processing device sends out incoming delivery packets. In other words, it is an information processing network system that is configured to connect the two sides with a logical path, and the information processing device on the calling side has an information processing unit, a call control unit, and an incoming call control unit. and a timer control unit, and the information processing unit checks whether or not a call should be made again when a disconnection instruction packet is sent as a response to a calling packet, and determines that a call should be made again. In this case, the above-mentioned timer control unit (this should be activated by setting a predetermined time limit, and when a timeout occurs for the above-mentioned call control unit, the calling packet should be sent again to the same destination information processing device) and at the same time (instructs the incoming call control unit G to tell the address of the other party's information processing device and accept an incoming call based on the call originating from the other party's information processing device, and The call control unit sends a call packet addressed to the other party's information processing device when the timer control unit outputs a timeout, and accepts the call when there is a request from the call reception control unit to send a call reception packet. The incoming call control unit is configured to send out a packet, and when an incoming call packet is sent in response to a call from the other party's information processing device in a state where the timer control unit has not yet timed out after being activated, An information processing network system, characterized in that the information processing network system is configured to request the call control unit to send an incoming call acceptance packet and to report to the information processing unit that there is an incoming call.