JP3231730B2 - Connection control device and connection control method for switching system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection control device for a switching system and a connection control method for the switching system.

[0002]

[Prior Art] Reservation application and request by telephone,
Or, calls may be concentrated on a specific telephone number or a specific area, such as a disaster call to a specific area. At the time of such outgoing congestion, while detecting the occurrence of congestion on the receiving side, subscribers causing the congestion,
Find the area, determine the amount of restriction according to the congestion state, automatically enforce the restriction at the originating station side, control outgoing and incoming calls to congested subscribers and areas, and prevent the spread of the congestion state to the entire network There is a need. This is a necessary measure in order to secure calls from emergency public telephones such as police and fire departments and public telephones, and calls to non-congested grounds.

In order to control such congestion occurring in the terminating system, that is, so-called congestion in the terminating system, a part of transmission to a specific number is connected based on an outgoing / incoming call restricting rate, a possible reception index calculated on the receiving side, and the like. Is known to connect to a talkie and notify that connection is not possible. In this method, the re-calling is left to the will of the subscriber on the calling side, and the probability of being able to connect by repeating calling is increased, so that re-calling from the same subscriber number is repeated. Such repetition of retransmission from the same subscriber number increases the number of uncompleted calls and worsens the congestion state. Once the state becomes the congestion restriction state, it takes time until the congestion is alleviated.

[0004] An example of the prior art for avoiding the deterioration of the congestion state due to the repetition of such retransmission is described in Japanese Patent Application Laid-Open No. 2-75447 as "Transmission Congestion Prevention System". FIG. 5 shows a block diagram of this transmission congestion prevention system.
, The resource monitoring means 200 monitors the congestion state of the resource 100 shared for the outgoing connection of the subscriber 2. When the resource monitoring unit 200 detects the congestion state of the resource 100, the queuing processing unit 400 registers the transmitting subscribers 2 in the queue 300 in the order of transmission, and when the resource monitoring unit 200 detects the congestion state of the resource 100. When the cancellation is detected, the subscribers 2 registered in the queue 300 are extracted in the order of registration, and the call processing is performed.

[0005] The queuing notifying means 500 notifies the subscriber 2 registered in the queuing queue 300 by the queuing processing means 400 of a message urging the subscriber 2 to wait for a calling process without abandoning the call. Therefore, subscriber 2 who encountered outgoing congestion,
Since it waits until the transmission processing is performed in the transmission order, the occurrence of a recall is prevented, and the deterioration and prolonged transmission congestion state due to the recall are prevented.

[0006] Japanese Patent Application Laid-Open No. 1-136096 discloses whether a calling subscriber registers an automatic connection service when the calling subscriber encounters a call restriction due to congestion, and whether a call is automatically made when the congestion is released. "Automatic connection service method at the time of network congestion" is described, which is left to the calling subscriber's intention.

In this system, for outgoing calls in the event of congestion, guidance is provided by an announcement from the exchange and service registration is performed by dialing, so that the calling connection without knowing the automatic connection service itself or a special number for service registration is performed. It is possible to provide services uniformly to persons.

Further, when the congestion is released and the automatic service is executed, an unnecessary guidance is provided by giving an opportunity to select whether or not to execute the service by giving an instruction by a dial number after guidance by an announcement so as to avoid unnecessary automatic connection service. Make it possible.

[0009] Then, since the guidance by the announcement is performed by calling the service registrant after confirming the idle state of the called subscriber, it is possible to avoid repetition of automatic connection due to the busy of the called subscriber.

[0010]

However, in the above-mentioned conventional transmission congestion prevention method, as a measure for preventing the occurrence of recall, a message urging the user to wait for the transmission processing is notified. There is a first problem that it is not easy to prevent the occurrence of a recall. This is because it is quite possible that the outgoing subscriber who has lost his numbness will make a recall. Further, after the congestion is resolved, the transmission processing is performed uniformly in the transmission registration order, so that the flexibility is lacking.

In the above-mentioned conventional automatic connection service method at the time of network congestion, recall is avoided by calling the service registration subscriber after confirming the idle state of the called subscriber. Also has the first problem described above. Furthermore, although the service has been made more flexible through announcements, the subscriber has to be called and dialed twice, both when registering for the automatic connection service and when executing the automatic service, which is cumbersome. There is.

An object of the present invention is to determine the priority of connection with respect to a subscriber to be regulated or a calling subscriber number to the destination in the order of the first call, and to make a call from a subscriber who does not have a call right. To provide a congestion control device and a congestion control method of a switching system that reduces the number of overflows and the busy rate by imposing a penalty, shortens the recovery time from the congestion state, and ensures the fairness of the connection. is there.

Another object of the present invention is to provide a congestion control device and a congestion control method for a flexible switching system which can receive two kinds of services by one registration.

[0014]

Means for Solving the Problems The invention according to claim 1
Is the line connection when congestion occurs in the switching system.
A connection control device for controlling connection, wherein the connection control device
Is the outgoing call sent to the congested switch
A database that registers callers in sequence and the congestion
When an outgoing call to a live exchange is detected,
Inquires if you want to register for connection, and requests the caller
Call to register this caller in the database according to
A sequential connection registration unit, and a sequence registered in the database;
To the exchange where the congestion has occurred
A call order connection control unit, and the call order connection registration unit,
When registering in the database, congestion has occurred
When it is possible to redial a caller who sent to the exchange
And the caller redialed before the available time
Remove the registration of this caller if it is already registered
Again to ask if you want to register
And re-register in the database at the request of the caller
It is characterized by doing.

Further, the invention according to claim 2 is an exchange system.
Control line connection when congestion occurs in the system
A connection control method, wherein said connection control method comprises:
When an outgoing call is detected for the switch where
Ask if you want to register connection in order,
Call to register this caller in the database on demand
Forward connection registration process, and registration in the database
In order, connect to the exchange where congestion has occurred.
Outgoing call connection control process.
During the registration, the congestion occurs when registering in the database.
Caller who made a call to the existing switch can be redialed
Tells you when the call can be made
If you do, the registered
Delete and ask if you want to re-register
At the request of the caller.
It is characterized in that it is registered once.

[0016]

[0017]

[0018]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention. Reference numeral 10 denotes a regulated outgoing order connection management device; 11, an outgoing order connection registration unit; 12, a regulated outgoing order connection registration database by ground; Represents a calling order connection control unit.

When the regulated outgoing call origination connection management device 10 detects a call request for the subscriber number or the outgoing call receiving the regulation information, it connects to the talkie 14 and becomes connectable when the outgoing call order connection is registered. The calling subscriber is notified of the time, and is prompted by tone input to select whether he / she wants connection registration in the order of calling and whether or not he / she wants automatic connection as a connection method at that time. When the calling subscriber receives a tone input indicating selection of connection registration in the calling sequence, the calling sequence connection registration unit 11 controls the outgoing call connection registration database 1 for each regulation.
Register to 2.

On the other hand, the calling subscriber who has performed the connection registration only in the calling order without selecting the automatic connection is reconnected to the same subscriber number after the notified connectable time, and is connected by the calling order connection. You. In addition, for the calling subscriber number registered by selecting the automatic connection, the calling order connection control unit 13 monitors and detects the automatic connection registration data in the regulation-based outgoing call order connection registration database 12 and sequentially, Perform automatic connection.

Next, FIG. 2 shows the configuration of one embodiment of the present invention. Reference numerals 21 and 22 denote exchanges, 21-1 to 21-n and 2
Reference numerals 2-1 to 22-n denote subscriber telephones connected to the exchanges 21 and 22, and reference numeral 23 denotes a regulated ground transmission order connection management device.

In FIG. 2, it is assumed that the exchange 21 to which the telephone set 21-1 is connected receives the restriction information indicating that the incoming call to the telephone set 21-1 is in a congested state by the restricted ground transmission order connection management device 23. As the process of outgoing connection control in the outgoing call order connection control unit 13 in the present apparatus, first, as shown in the flow of FIG. 3, the outgoing call to the subscriber receiving the receiving side congestion restriction information is monitored (step 30). ). Telephone 22
-1 to the telephone 21-1 is detected (step 3
1) If so, the call is connected to the talkie 14 and the telephone 22-
The caller 1 is in a congestion state, and is notified of the time when connection is possible when registration of the call order connection is performed, and whether or not to register the call order connection to the telephone 21-1. Is selected by tone input from the calling subscriber (step 34).

In step 32, the subscriber who does not have a calling right by the calling order connection registration, that is, a user who has not been registered in the call origination connection registration database 12 for each regulation, a subscriber whose automatic connection has been registered, or a calling order It is determined whether any of the subscribers who have registered but have made a call before the connectable time corresponds to any of the subscribers. In step 33, step 3
It is determined whether the calling number of the subscriber who has been affirmed in step 2 is not registered. In this case, since both steps 32 and 33 are affirmative, the process proceeds to step 34.

According to the type of the input tone, it is possible to register the connection in the calling order and select a desired automatic connection.
In this case, registration of outgoing call connection is faster than repetition of re-calling, and automatic connection even if there is a call from the same subscriber before the connectable time or if you selected automatic connection If the subscriber makes a call before the call is made, the first registration will be invalidated and recall will be prevented. If there is a tone input from the telephone set 22-1 to select the call order connection registration request, the call order connection registration unit 11 confirms that there is no connection registration from the telephone set 22-1 to the telephone set 21-1. Then, registration in the regulation-based outgoing call order connection registration database 12 is performed (step 35).

Next, the telephone 22-2 to the telephone 21-1
When a call is made to the telephone number, the registration to the restriction-to-ground transmission order connection registration database 12 is performed in the same procedure (step 35).

Here, the telephone 22-1 is re-started in a state where the connection of the registered call has not yet reached the available time.
If there is an outgoing call from to, it is determined that a registration has already been made, and the existing registration is deleted (step 37). Thereafter, when a tone for selecting the calling order connection registration is input from the calling side subscriber, the registration to the regulated outgoing call order connection registration database 12 is performed again (step 35). Therefore, the telephone 22-1 and the telephone 22-
2 were registered in the priority order of the telephone set 22-1 and the telephone set 22-2 at the time of one call, but the connection is registered in the order of the telephone set 22-2 and the telephone set 22-1 by re-transmission.

As described above, according to the present invention, not only does it not only shorten the connection time and increase the connection probability, but also lower the priority of outgoing call connection as a penalty, but also Effective for prevention. If a call is made from the telephone 22-1 after the connectable time notified at the time of connection registration, the connection is preferentially made even while the congestion state continues (step 36). In the processing in the flowchart of FIG. 3, the outgoing connection processing (step 36) is processed by the transmission order connection control unit 13 in FIG. 1, and the other processing is processed by the transmission order connection registration unit 11.

On the other hand, the outgoing connection control for the call registered by the automatic connection selection in the regulation-based outgoing order connection registration database 12 is performed in the regulated-by-ground outgoing order connection registration database 12 as shown in the flowchart of FIG. When the automatic connection registration is detected (step 41), it is determined whether or not the call is within the range of the call that can be processed on the receiving side based on the congestion control information of the called side and the number of connection registrations other than the automatic connection (step 43). If the conditions are satisfied, automatic connection is sequentially performed.

The automatic connection procedure is as follows. When data of automatic connection to the telephone 21-1 subject to congestion restriction is registered in the order of the telephone 22-2 and the telephone 22-1, the connection to the ground-based transmission order is controlled. First, a call signal is transmitted from the device 10 to the telephone set 22-2 (step 44).
Then, when on-hook (step 45), the talkie 14 notifies that automatic connection is to be performed, and automatically performs outgoing connection to the registered subscriber's subscriber number (step 46).

Thereafter, if the condition is that the incoming call can be processed, the telephone 22-1 registered next is automatically connected to the telephone 21-1 in the same procedure (step 42). The processing of the flowchart of FIG.
Is executed by

In the above embodiment, the congestion of one specific subscriber number is taken as an example, but the telephone sets 21-1 to 21-2 shown in FIG.
The method of the present invention can be applied even when a specific ground is in a congested state, such as 1-n. In this case, the connection order automatic connection registration database 1
2 and whether or not incoming call processing is possible is performed in units of ground such as telephones 21-1 to 21-n, and determination of re-calling is made in units of numbers of the respective receiving telephones.

Further, in the above-described embodiment, it is possible to select between automatic transmission and connection after re-registering after connection is established, but only one connection method is adopted without selection. It is also possible.

[0034]

According to the present invention, since the probability of connection does not depend on the number of outgoing calls, re-calling can be prevented, and the line efficiency can be increased. In addition, since connections are made in the order of transmission, fairness of connection can be maintained. In addition, since you can make two outgoing calls by calling order connection registration, and in the case of automatic connection, you can connect in one outgoing call,
This has the effect of reducing the burden on the calling subscriber.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a congestion control device of a switching system according to the present invention.

FIG. 2 is a block diagram showing one embodiment of a congestion control device of the switching system of the present invention.

FIG. 3 is a flowchart of registering data in a connection registration database for outgoing calls by regulation and ground.

FIG. 4 is a flow chart of the automatic connection in order of regulation by origin.

FIG. 5 is a diagram showing an example of a conventional transmission congestion prevention method.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 switchboard 2 subscriber 10 regulated outgoing order connection management device 11 outgoing order connection registration unit 12 outgoing ordered connection registration database for each regulated 13 outgoing order connection control unit 14 talkie 24 talkie 10 resource 200 resource monitoring means 300 queue 400 queuing process Means 500 Waiting notification means

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04M 3/00 H04M 3/16-3/20 H04M 3/38-3/58 H04M 7/00-7 / 16

Claims (2)

(57) [Claims] (1) When congestion occurs in a switching system :
Connection control device for controlling line connection in the case where the connection control device is transmitted to the exchange in which congestion has occurred in the order of transmission.
A database for registering a caller and detecting a call to the exchange in which the congestion has occurred.
And ask if you want to register connection in outgoing order,
At the request of the caller, send this caller to the database
Congestion occurs in the order of registration in the outgoing order connection registration unit to be registered and in the order registered in the database.
Outgoing connection control unit for connecting to the exchange
When, wherein the outbound forward connection registration unit registers into the database
Sent to the exchange where congestion has occurred
Tells the caller when it is possible to redial, and
If you redial before the available time, it is already registered
Delete the registration of this caller and re-register
Inquire whether you want or not, and according to the caller's request,
A connection control device for the switching system, wherein the connection control device is registered again in the database . 2. When congestion occurs in a switching system,
A connection control method for controlling a slip of the line connection, said connection control method detects originating for exchange the congested
And ask if you want to register connection in outgoing order,
Register this caller in the database at the request of the caller
In the outgoing call connection registration process , congestion occurs in the order registered in the database.
Outgoing order connection control
It has a degree, wherein the outbound forward connection registration process to register to the database
Outgoing to the exchange where the congestion is occurring
Convey the re-transmission can be time for the believer, the caller is again
If you re-dial before the available time,
Delete the registration of this caller and re-register
Ask if you want or not, according to the caller's request
A connection control method for a switching system, wherein the connection is registered again in the database .