JPH03214951A - Originating call control system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Summary) A plurality of subscriber accommodating devices transfers a call setting request from each subscriber accommodated to a commonly provided call processing device,
Regarding the outgoing call restriction method in the exchange that processes the call setup request received by the call processing device, it is possible to implement outgoing call restriction that eliminates the congestion that has occurred as effectively as possible and without affecting processes that are not subject to regulation. For the purpose of A restriction information transfer means is provided to create restriction start information including the type of call setting request to be used and transfer it to each subscriber accommodation device, and to send restriction start information transferred from the call processing device to each subscriber accommodation device. The system is configured to provide a restriction means for restricting the transfer of a specified type of call setup request to a call processing device. [Industrial Application Field] The present invention allows a plurality of subscriber accommodating devices to transfer call setup requests from each subscriber they accommodate to a commonly provided call processing device, and to process received calls by the call processing device. This paper relates to a call restriction method in an exchange that executes processing in response to a setting request. [Prior Art] Figure 5 is a diagram showing an example of a conventional call restriction method. FIG. 5 shows a network 1, a control device 2, a signal control device 3, and a plurality of subscriber terminal devices 4, which constitute an exchange.
(individual subscriber terminal equipment is expressed as 41, 41, the same applies hereafter), subscriber terminal equipment 4 accommodates subscribers 5-, 5b, and 5, and subscriber terminal equipment 4b accommodates a subscriber 54.

Each subscriber 5 requests the exchange to set up various calls, such as a line call that occupies a communication line during a call, such as a telephone call, and a packet call that transfers required data in packets. When any subscriber 5 requesting call setup transfers a call setup message including the call type to the subscriber terminal device 4 to which it belongs, the subscriber terminal device 4 transmits the received call setup message as follows:
It is transferred to the control device W12 via the network 1 and the signal control device 3. The control device W2 is connected to each subscriber terminal device 4.
Based on call setup messages transferred from the network, the required call setup processing is executed centrally. On the other hand, a congestion detection unit 2l provided in the control device 2 monitors the processing state of the control device 2 based on, for example, the operation rate or the occupancy rate of a buffer memory (not shown), and determines whether the operation rate or the occupancy rate of the buffer memory is When the predetermined reference value is reached, the control device 2 determines that a congestion state has occurred, and activates the transmission restriction section 22 provided in the control device 2. The activated call regulation unit 22 uniformly regulates the processing of call setup messages transferred from each subscriber terminal device 4 according to the degree of congestion. [Problems to be Solved by the Invention] As is clear from the above explanation, in the conventional call restriction system, the control device 2 detects congestion and processes the call setup message transferred from each subscriber terminal device 4. Because the restrictions are uniform, call setup messages subject to restrictions will continue to be sent to the control device 2 from each subscriber terminal device 4 even during the restrictions.
As a result, the invalid load on the control device is not reduced, and there are adverse effects such as delays in processing that are not subject to regulation.

The present invention aims to reduce congestion as effectively as possible, and to control it as effectively as possible.
The purpose is to make it possible to eliminate call restrictions without affecting out-of-band processing. [Means for solving the problem] Figure 1 is a diagram showing the principle of the present invention. In FIG. 1, 5 is a subscriber, 100 is a subscriber accommodating device each accommodating the subscriber 5, and 200 is a call processing device provided in common to a plurality of subscriber accommodating devices 100. 300 is congestion detection means provided in the call processing device 200 according to the present invention. 400 is a restriction information transfer means provided in the call processing device 200 according to the present invention. 500 is a restriction means provided in the subscriber accommodation device 100 according to the present invention. [Operation] Each subscriber accommodating device 100 accommodates each subscriber 5.
A call processing device 20 provided in common receives a call setup request from
Transfer to 0.

The call processing device 200 executes processing for the received call setup request. The congestion detection means 300 detects processing congestion and identifies the type of call setup request that causes congestion.

When the congestion detection means 3oO detects congestion, the restriction information transfer means 400 creates restriction start information including the type of call setting request that causes the congestion, and transfers it to each subscriber accommodation device l00. The regulating means 500 regulates the transfer of call setup requests of the type specified in the regulation start information transferred from the call processing device 2200 to the call processing device. Therefore, call setup requests that cause congestion in the call processing device are no longer transferred from the subscriber accommodating device to the call processing device, and the impact on invalid load and non-regulated call processing is also reduced. [Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 2 is a diagram showing a call restriction method according to an embodiment of the present invention, FIG. 3 is a diagram showing an example of a call restriction process in FIG. 2, and FIG. 4 is a diagram showing restriction information in FIG. 3. This is a diagram showing an example. The same reference numerals indicate the same objects throughout the figures. In FIG. 2, the subscriber termination device 4 is shown as the subscriber accommodation device 100 in FIG. 1, the control device 2 is shown as the call processing device 200 in FIG. 1, and the congestion detection means in FIG. A congestion detection section 23 is provided in the control device 2 as 300, a regulation information transfer section 24 is provided in the control device W2 as regulation information transfer means 400 in FIG. An information storage section 41 and a call restriction section 42 are provided in each subscriber terminal device 4. In Figures 2 to 4, any subscriber 5 requesting call setup
However, as described above, when the call setup message including the call type is transferred to the subscriber terminal device 4 to which it belongs, the subscriber terminal device 4 transmits the received call setup message to the network 1 and the signal control Transfer to control device 2 via device 3. The control device 2 centrally executes the required call setting processing based on the call setting messages transferred from each subscriber terminal device 4. On the other hand, the congestion detection unit 23 monitors the processing state of the control device 2 based on, for example, the operation rate or the occupancy rate of a buffer memory (not shown), and determines whether the operation rate or the buffer memory occupancy rate is a predetermined reference value. When reaching the limit, the control device 2 determines that a state of congestion has occurred, analyzes the congestion discharge and congestion factors, and determines the subscriber 5 whose call is to be restricted, the call type, and the restriction rate (hereinafter collectively referred to as restriction information). , is transmitted to the regulation information transfer unit 24. In FIG. 4, as a result of the analysis, the congestion detection unit 23 shows that the subscriber 51
60% of line calls C, and all call types of subscriber 5b (
20% for line calls C and packet calls P), plus 5 subscribers
The restriction information that the congestion detection unit 23 transmits to the restriction information transfer unit 24 when it is determined that 20% of the packet calls P in c. need to be restricted from origination is illustrated. The regulation information transfer unit 24 creates regulation start information RSI by adding a signal indicating the start of regulation to the regulation information transmitted from the congestion detection unit 23, and sends the regulation information RSI to each subscriber terminal via the signal control device 3 and network 1. Transfer to device 4. In each subscriber terminal device 4, a regulation information storage section 4l stores signals from the control device 2 to the signal control device 3 and the network l.
When the regulation start information RSI transferred via is analyzed and it is identified that it contains a regulation start signal, the regulation start information RS
Accumulate regulatory information included in I. In this state, the subscriber terminal equipment 4. When a subscriber 5, accommodated in Installation &
4. In the transmission regulation section 42. Analyzes the call setup message SETUP(C) received by subscriber 5 who sent the call.
．． and the call type (=line call C) is the restriction information storage unit 41.
When it is determined that the call setup message SETUP (C) is subject to call restriction,
Regulation information storage section 41. The transfer to the control device 2 is restricted at a rate corresponding to the corresponding restriction rate (-60%) stored in the subscriber 5. A release completion message RELCOM is sent back to . Also subscriber 5. sends a call setup message S containing packet call P as the call type in order to request setup of packet call P.
ETUP (P) to the subscriber terminal equipment 4. When transferred to
Subscriber termination equipment4. In the transmission regulation section 42. analyzes the call setup message SETUP (P) received by
Source subscriber5. and the call type (=packet call P) is the restriction information storage unit 41. If it is determined that the call setup message SETUP (P) is not subject to call restriction, it is transferred to the control device 2 via the network 1 and the signal control device 3 in the same way as described above. and requests call setup. Next, subscriber 51 sends a call setup message SETUP, (C) or SETUP (P) containing line call C or packet call P as the call type in order to request the setup of line call C or packet call P. Terminal device 4. , the subscriber terminal device 4 transmits the transmission to the calling restriction section 42 . Call setup message SETUP (C) or S received by
ETUP (P) is analyzed, and the sending subscriber 5 and the call type (=line call C or packet call P) are determined by the regulation information storage unit 41. If it is determined that the call setup message SETUP (C) or SETUP (P
) is determined to be subject to transmission restrictions, and the restriction information storage unit 4
Transfer to the control device 2 is regulated at a rate corresponding to the corresponding restriction rate (=20%) accumulated in subscriber 5,
A release completion message RELCOM is sent back to . Furthermore, in order to request the setting of line call C, the subscriber 5c sends a call setting message SETUP containing line call C as the call type.
(C) is transferred to the subscriber terminal device 4, in the subscriber terminal device 4, the call restriction section 42. analyzes the received call setup message SETUP (C) and identifies that the sender subscriber 5c and the call type (=line call C) are not stored in the regulation information storage section 41, the call setup message SETUP (C) is analyzed. It is determined that (C) is not subject to call restriction, and as described above, the call is transferred to the control device 2 via the network 1 and the signal control device 3, and a call setup request is made. Further, in order to request the setup of a packet call P, the subscriber 5c sends a call setup message S containing packet call P as the call type.
ETUP (P) to the subscriber terminal equipment 4. When transferred to
Subscriber termination equipment 24. In the transmission regulation section 42. analyzes the call setup message SETUP (P) received by
Source subscriber 5. and the call type (-packet call P) is the restriction information storage unit 41. When it is determined that the call setting message SETUP (P) is stored in the restriction information storage section 41., it is determined that the call setup message SETUP (P) is subject to outgoing restriction. The transfer to the control device 2 is restricted at a rate corresponding to the corresponding restriction rate (=20%) stored in the subscriber 5c, and a release completion message RELCOM is returned to the subscriber 5c. Furthermore, the regulation information storage unit 41 of the subscriber terminal device 4b also has the following information:
, regulatory information storage section 41. However, since the accommodated subscriber 54 is not subject to regulation, all call setup messages S transferred from the subscriber 5c are stored.
ETUP (C) or SETUP (P) is transferred to the control device 2 in the same manner as described above. As is clear from the above description, according to this embodiment, when congestion occurs in the control device 2, the restriction start information RSI including restriction information is transferred to each subscriber terminal device 4, and each subscriber 5 Call setup message SETUP (C) or S
Every time ETUP (P) is sent out, it is checked against the regulation information in the subscriber terminal device 4, and regulation is executed based on the specification of the regulation information, so no invalid load is applied to the control device 2, and the regulation is This also eliminates the effect on call processing that is not the target. Note that FIGS. 2 to 4 are only one embodiment of the present invention, and for example, the regulatory information is not limited to what is shown in the figures, and many other modifications may be considered, but any The effect of the present invention remains the same even in the case of Also, subscriber accommodation device 1
00 and the call processing device 200 are not limited to the illustrated subscriber terminal device 4 and control device 2, and many other modifications may be considered, but the effects of the present invention do not change in any case. .

〔Effect of the invention〕

As described above, according to the present invention, in the switching equipment, call setup requests that cause congestion occurring in the call processing device are no longer transferred from the subscriber accommodation device to the call processing device, thereby reducing invalid load and
In addition, the impact on call processing that is not subject to regulation is also reduced.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the principle of the present invention, FIG. 2 is a diagram showing a call restriction method according to an embodiment of the present invention, FIG. 3 is a diagram showing an example of the call restriction process in FIG. 2, and FIG. is a diagram showing an example of the restriction information in FIG. 3, and FIG. 5 is a diagram showing an example of a conventional transmission restriction method. In the figure. , 1 is a network, 2 is a control device, 3 is a signal control device, 4 is a subscriber terminal device, 5 is a subscriber, 21
and 23 is a convergence detection section, 22 and 42 are transmission regulation sections, 24 is a regulation information transfer section, 4l is a regulation information storage section, 10
0 represents a subscriber accommodation device, 200 a call processing device, 300 a congestion detection means, 400 a restriction information transfer means, and 500 a restriction means. i system η fat Z diagram 荊 3 fig. 1 2 ake 6 regulation/clearance 简 4 fig.

Claims (1)

[Scope of Claims] A plurality of subscriber accommodating devices (100) transfers call setting requests from each subscriber (5) they accommodate to a commonly provided call processing device (200), and the call processing device (200) in an exchange that executes processing for a received call setup request, the call processing device (200) is provided with congestion detection means for detecting congestion in the processing and identifying the type of call setup request that causes the congestion. (300), when the congestion detecting means (300) detects the congestion, creating restriction start information including the type of call setup request that causes the congestion, and transmitting it to each subscriber accommodation device (100); A restriction information transfer means (400) is provided for each subscriber accommodating device (100), and each subscriber accommodating device (100) is provided with
200), the outgoing call regulation method is characterized by providing a regulation means (500) for regulating the transfer of a call setting request of a type specified in the regulation start information transferred from the call processing device (200) to the call processing device (200).