JPS6397052A - Packet conference exchange system - Google Patents

Abstract

PURPOSE:To attain a packet conference using dumb terminals whose response is close to real time by selecting one packet in case plural packets arrive at an incoming call subscriber in a prescribed time and allowing the incoming call subscriber to receive it. CONSTITUTION:When a voice is transmitted simultaneously from digital telephone subscribers 1 and 2, a transmission data packet A31 reaches incoming packet exchanges 5 and 6, while a transmission data packet B32 arrives at the incoming packet exchanges 4 and 6. Since the exchanges 4 and 5 do not receive >=2 data packet to the same callee until the end of receiving the incoming data packet, they transmit the data packet received to an incoming call party as it is. The incoming packet exchange 6 receives another data packet while receiving one data packet, accordingly, checks the contents of the received data packets A31, B32, and transmits the A31 whose sound volume is larger to the incoming digital telephone subscriber 3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a packet conference switching system, and particularly to a packet conference switching system in which a conference is held between three or more parties in a packet switching network.

[Conventional technology]

Conventionally, in packet switching networks, one-to-one bidirectional communication and one-to-N broadcast communication have been performed.

[Problem that the invention seeks to solve]

Communication in the conventional packet switching network described above is one-to-one.
Since this is two-way communication and 1-to-N broadcast communication, when a conference is held with three or more participants, if two or more conference participants simultaneously send packets to all conference participants, the incoming subscriber Since there is a delay time for packet length x n-th insertion for packets other than the first one to arrive, there is a drawback that this method cannot be applied to packet teleconferences, etc., which require real-time performance.

[Means for solving problems]

The packet conference switching system of the present invention is a packet conference switching system in which a plurality of packet switches are connected by relay lines to form a packet switching network, and a conference is held between three or more subscribers accommodated in each of these packet switches. In this system, when a plurality of packets arrive at a terminating subscriber within a certain period of time, one of them is selected and sent to the terminating subscriber, and the other packets are discarded.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of a telephone voice packet switching network showing an embodiment of the packet conference switching system of the present invention. In the figure, the packet exchangers 4, 5.6 are connected by relay lines to form a packet exchange network, and communication is possible between the packet exchangers 4, 5.6. Digital telephone subscribers 1.2 and 3 are arranged in these packet switches 4.5 and 6, respectively.

In the figure, when digital telephone subscribers 1 and 2 make voice calls at the same time, outgoing data packet A31 arrives at incoming packet switches 5 and 6, and outgoing data packet B32 arrives at incoming packet switches tl14 and 6. Since the packet exchangers 4 and 5 do not receive more than one data packet in the same incoming call by the time they finish receiving the arrived data packet, they send the received data packet as is to the destination party, but the incoming packet switch 6 does not receive the received data packet. While one data packet is being received, another data packet will be received, so check the contents of the received data packets A31 and B32, and send the louder data packet A31 to the incoming digital telephone subscriber 3. Send to.

〔Effect of the invention〕

As explained above, the present invention provides a packet conference switching system in which a plurality of packet switching devices are connected by relay lines to form a packet switching network, and a conference is held between three or more subscribers accommodated in these packet switching devices. In this system, if multiple packets arrive at the called subscriber within a certain period of time, one of them is selected and the call is sent to the called subscriber, which has the effect of providing packet conferencing using dumb terminals with strong real-time performance. be.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a telephone voice packet switching network showing an embodiment of the packet conference switching system of the present invention. 1.2.3...Digital telephone subscriber, 4,5゜6・
...Packet switch, 31.32...Data packets A, B.

Claims (1)

[Claims] In the packet conference switching system, a packet switching network is formed by connecting multiple packet switches via relay lines, and a conference is held between three or more subscribers accommodated in each of these packet switches. A packet conference switching system characterized in that when a plurality of packets arrive, one of them is selected and the call is sent to the receiving subscriber.