JPH11112670A - Telephone system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent with an inexpensive configuration the recongestion after solving congestion. SOLUTION: When a slave unit A makes a call while a public network is congested, a PBX associates the number of the unit A on a calling side with the number of an incoming side and stores them, and when the congestion is solved, it sends an incoming call request to the unit A. When the unit A performs off-hook, the PBX sends such a voice message as 'Would you like the line to be connect?' to the unit A in order to notify 'network congestion release time line connection', then sends a tone signal that shows the 'network congestion release time line connection' to set a tone timer, and sends a call setting request to the public network and an incoming side terminal, when the response button of a slave unit B is pressed before the tone timer makes time out. On the other hand, when the response button of the unit B is not depressed before the time out, it does not perform the 'network congestion release time line connection'.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone device having a base unit such as a private branch exchange (PBX) and a slave unit as an extension terminal, and more particularly to a process when congestion occurs in a network.

[0002]

2. Description of the Related Art Conventionally, as a processing method when a call is transmitted during network congestion, for example, (1) JP-A-7-2643
As disclosed in Japanese Patent Laid-Open Publication No. 10, a method has been proposed in which, when congestion is resolved, a call is made to notify the sender of the fact. Further, as another conventional example, for example, (2)
As disclosed in Japanese Patent Application Laid-Open No. 8-317435, a method of providing an emergency trunk circuit or the like has been proposed.

[0003]

However, as described in (1) above, in the method of notifying the terminal when the congestion is resolved, other outgoing and incoming calls until manual retransmission are performed. Therefore, there is a problem that a line is blocked and connection is not made, and a problem that re-congestion is induced when many users perform re-transmission. In the method of providing an emergency trunk circuit or the like as in the above (2), the above problem can be solved, but there is a problem that the cost increases.

[0004] In view of the above-mentioned conventional problems, an object of the present invention is to provide a telephone device which can prevent re-congestion after congestion is eliminated with an inexpensive configuration.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention stores a slave unit and a called terminal that have transmitted during a network congestion, and automatically stores the information when a congestion state of the network is released. After notifying the calling handset of a call to the called terminal, the call is transmitted to the called terminal.
That is, according to the present invention, a determination unit that determines whether the network is in a congestion state, and when a call to the network is generated from the slave unit when the determination unit determines that the network is in a congestion state. Storing the calling side slave unit and the called side terminal, and when the congestion state of the network is released by the determining means, the calling side slave unit to the called side terminal. And a control unit for transmitting a call to the called terminal after notifying that the call is to be transmitted.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing an embodiment of the telephone device according to the present invention, and FIGS. 2 to 4 are explanatory diagrams showing a communication sequence of the telephone device of FIG.

[0007] One embodiment shown in FIG.
0 and a public network 20 connected to the private telephone apparatus 10. The private telephone apparatus 10 includes a private branch exchange (PBX) 1 that controls connection of an extension and an external line to the public network 20.
1a and 11b, a master unit 12, and slave units A to C that perform wireless communication with the master unit. The cordless handsets A to C may be cordless phone cordless phones that are usually used at home or second-generation PHS (personal handy phone system) phones having a self-operating mode used as extension phones. "1000", "1001", and "1003" as extension numbers of machines A, B, and C, respectively.
Are assigned, and the priority is “2”, “1”,
“3” is set respectively. Further, in addition to the function as a normal telephone device, the telephone device of the present invention includes a judging unit 13 for judging whether or not the public network 20 which is a function unique to the present application is in a congested state. If a call is issued from the slaves A to C to the public network 20 while it is determined that the slave 20 is in the congestion state,
~ C and the telephone number of the call destination are stored,
Has a control means 14 for notifying the calling sub-units A to C when it determines that the congestion state of the public network 20 has been released, and for dialing out the telephone number of the calling destination. Then, when the base unit 12 is connected to the public network 20 via the PBX 11a, the telephone device of the present invention will be described with reference to FIG.
As shown in FIG. 5, when the determination unit 13 and the control unit 14 are provided in the PBX 11a, and the base unit 12 is directly connected to the public network 20 without passing through the PBX 11a, FIG.
As shown in FIG.
Are provided.

FIG. 2 shows a processing procedure when the slave units A to C make a call while the public network 20 or a connection line to the public network 20 is congested. For example, the slave unit A receives the called telephone number “333”.
When a call setup request having "3" is transmitted to the PBX 11,
In response to this, the BX 11 transmits a call setting request to the public network 20, and upon detecting congestion of the public network 20, sends a voice message such as "Now, the network is congested" and a disconnection notification to the slave unit A. Send. Similarly, when the slave units B and C transmit a call setting request having the called telephone numbers “4444” and “5555” to the PBX 11, the PBX 11 transmits a call setting request to the public network 20 in response thereto, When the congestion of the public network 20 is detected, for example, "
Network congestion "and a disconnection notification. This is repeated even if the child units A to C make a call again. Then, at this time, the PBX 11 is the calling handset A,
B and C numbers and called party numbers "3333" and "444"
4 "and" 5555 "are stored in association with each other.

FIGS. 3 and 4 show processing when the congestion state shown in FIG. 2 is resolved. First, the PBX 11 transmits an incoming call request to the slave unit B having the priority “1”, whereby the ring tone of the slave unit B sounds. Next, when the slave unit B goes off-hook, the PBX 11 transmits a voice message such as "Do you want to connect?" A tone signal indicating "connection" is transmitted to set the tone timer, and the called party number "4444" is set when the response button of the slave unit B is pressed before the tone timer times out.
Is transmitted to the public network 20 and the called terminal, and if the response button of the slave unit B is not pressed before the time-out, the above-mentioned "line connection at the time of network congestion release" is not performed. When the called terminal answers, the call is in progress, and when the call ends, a normal disconnection recovery procedure is performed.

Next, during or after the end of the call by the handset B, the PBX 11 performs the same processing for the handset A having the priority "2", and then performs the same processing for the handset C having the priority "3". To perform the same processing. It should be noted that this “line connection at the time of network congestion release” may be performed in the order of calling during the congestion instead of being performed according to the priority order. In addition, the above process only needs to be performed once for a slave unit that has transmitted a number of times during congestion, and if it is possible to set whether or not to perform the above process in the slave unit or the PBX, usability is improved. Can be improved.

[0011]

As described above, according to the present invention, the network unit stores the slave unit and the called terminal that transmitted during the congestion, and automatically sets the calling side when the congestion state of the network is released. After notifying the slave unit of the call to the called terminal, the call is sent to the called terminal, so it is possible to prevent re-congestion after congestion is resolved with an inexpensive configuration. it can.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing one embodiment of a telephone device according to the present invention.

FIG. 2 is an explanatory diagram showing a communication sequence when a network is congested.

FIG. 3 is an explanatory diagram showing a communication sequence when network congestion is resolved.

FIG. 4 is an explanatory diagram showing a communication sequence when network congestion is resolved.

FIG. 5 is a configuration diagram for explaining a telephone device according to the present invention.

[Explanation of symbols]

 11a, 11b PBX (judgment means, control means) 12 parent machine 13 judgment means 14 control means 20 public network A, B, C slave units

Claims (7)

[Claims] A determining means for determining whether or not the network is in a congested state; and when a call to the network is generated from a slave unit when the determining means determines that the network is in a congested state,
The calling side slave unit and the called side terminal are stored, and when the congestion state of the network is released by the determination means, the call is transmitted to the calling side terminal to the called side terminal. Control means for transmitting a call to the called terminal after notifying the user of the call. 2. The control means, after notifying the calling handset of a call to the called terminal in a predetermined order of priority, sends the call to the called terminal. 2. The telephone device according to claim 1, wherein the call is transmitted to a terminal. 3. The control means, after notifying the calling side of the handset in the order of transmission when the network is determined to be in a congested state, to notify the calling side of the terminal. ,
2. The method according to claim 1, wherein the call is transmitted to the called terminal.
The telephone device as described. 4. The control means notifies the calling handset of a call to the called side terminal and, if the calling handset responds, notifies the called side. 4. A terminal according to claim 1, wherein the call is transmitted to a terminal on the side of the terminal.
The telephone device according to any one of the above. 5. The control means, after notifying the calling-side slave unit that a call is to be sent to the called-side terminal, if the calling-side slave unit does not respond within a predetermined time. And transmitting the call to the called terminal.
The telephone device as described. 6. The method according to claim 1, wherein the control unit notifies the slave unit, which has transmitted a plurality of times, when the network is determined to be in a congestion state, that the call is to be transmitted to the called terminal. The telephone device according to any one of claims 1 to 5, wherein a process of transmitting a call to the terminal on the side is performed once. 7. The slave unit or the control means, after notifying that the call is transmitted to the called terminal, sets whether or not to perform processing for transmitting to the called terminal. The telephone device according to any one of claims 1 to 6, wherein: