JPH03187596A - Register/sender selective system - Google Patents

Abstract

PURPOSE:To improve service for a subscriber involved in an electronic exchange by using a register and a sender alternatively according to traffic quantity. CONSTITUTION:Call origination information from a subscriber circuit 25 and an inter-office trunk circuit 26 is accumulated in an input supervison circuit 21, and is transmitted to a central control unit 10 side through a channel system driving control part 22 by the command of an input acceptance processing part 12 allocated in the central control unit 10. When the selection of the register or the sender is instructed in response to this call origination information, since a common resource selection circuit 13 selects the register or the sender so that the number of the use of the register becomes below the predetermined maximum number of the use of the register, and in addition, the number of the use of the sender becomes below the predermined maximum number of the use of the sender, the register and the sender can be used alternatively according to the traffic quantity. Thus, the service for the subscriber involved in the electronic exchange is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a register/sender selection system for an electronic exchange using a storage program control system.

[Prior Art] Conventionally, in a register/sender selection system in an electronic exchange using a storage program control system, there are physically defined register circuits and sender circuits. The circuits and sender circuits are used up to a specified quantity using the fast-in, early-out method (FIFO).

[Problems to be Solved by the Invention] In the conventional register/sender selection method described above, the equipment for the register circuit and the sender circuit exists as physically different circuits, so the cost for the circuit itself and the circuit installation space is high. It had become a thing.

In addition, in electronic exchanges in which the above-mentioned circuits are fixedly installed, the register/sender selection method using a built-in storage program allows selection within a certain range that is physically determined in advance depending on the selected signal type and transmission/reception type. Only methods are allowed.

Therefore, there has been a drawback that the degree of freedom of selection according to the load amount and traffic balance is insufficient, which has a large impact on the subscribers accommodated in the electronic switching device and the subscriber services.

[Means for Solving the Problems] The register/sender selection method of the present invention uses a common resource that can be commonly used by registers and senders, and a common resource that and a common resource selection circuit that selects a register or a sender from the sender, and the common resource selection circuit selects a register or a sender when the number of registers used is equal to or less than a predetermined maximum register use value, and the number of centers used is a predetermined sender. Registers and senders are selected so that the value is less than or equal to the maximum value used.

[Operation] When the selection of a register or a sender is instructed in accordance with the call information, the common resource selection circuit selects a register when the number of registers used is equal to or less than a predetermined maximum register use value, and the number of senders used is a predetermined value. By selecting registers and senders such that the usage value of the sender is equal to or less than a predetermined maximum value, registers and senders can be selected and used according to the amount of traffic.

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

FIG. 1 is a block diagram showing the configuration of an electronic exchange in an embodiment of the register sender selection system of the present invention, and FIG. 2 is an operational flowchart in the same embodiment.

In FIG. 1, a communication path device 20 shown by a broken line monitors call origination on a subscriber circuit 25 and an interoffice trunk circuit 26. In FIG. This subscriber circuit 25 and interoffice trunk circuit 26
Calling information from is stored in the input monitoring circuit 21, and the input information in the central control unit 10 shown by the broken line is attached to the processing unit 12.
This command is transmitted to the central control unit 10 (!!!I) via the communication path system drive control section 22. Based on this calling information, appropriate registers are connected to the subscriber circuit 25 and the trunk circuit 26. Once the selected number is received, the output route corresponding to the selected number is selected, and the appropriate sender is connected to this output route. The selected digits will be sent to the opposing exchange system. Also, 27
is a common resource provided so that registers and senders can be used in common, that is, register senders.

Note that the above-mentioned outgoing route is physically a trunk circuit (not shown), and refers to a route to the ground divided by a logically selected number, for example, a selection number dialed by the subscriber.

A series of these controls is performed by an exchange control device processing section 11 included in the central control device 10. Among this series of controls, the common resource selection circuit 13 performs a decision 9 selection when it becomes necessary to select the register sender 27, that is, selects the register sender 27 based on the flowchart shown in FIG. Select one circuit, a register or a sender. At this time, the exchange control processing unit 1 according to the calling information
If the command given to the common resource selection circuit 13 from 1 is a register selection request, the common resource selection circuit 13 adds a "name code" indicating that the selected circuit is a "register" to the selected circuit information and exchanges it. It is transmitted to the control processing unit ■1. On the other hand, if the command given from the exchange control processing unit 11 to the common resource selection circuit 13 is a sender selection request, a “name code” of “sender” is similarly added to the selection circuit information and the exchange control processing unit 11 introduce.

The selected circuit information and name code are transmitted via the exchange control processing section 11 to the register/sender instruction control section 15 which actually has an interface with the physical circuit.

The register/sender instruction control unit 15 controls the communication path system device 20
The register/sender control circuit 23 included in the controller is instructed to receive or transmit selected numbers by assigning a "name code" to each circuit and to each generated "call." The register sender drive circuit 24 drives the register sender 27 in accordance with the above-mentioned commands transmitted to the register sender drive circuit 24 via the communication line device drive control section 22.

On the other hand, the traffic handled by an exchange system is generally not constant, but always changes, increases and decreases, and common resource traffic monitors this and distributes notification information within the exchange system. This is a control circuit 14. The common resource traffic control circuit L4 knows the usable quantities of registers and senders, constantly changes the maximum usable threshold of each in accordance with external traffic fluctuations, and transmits this information to the common resource selection circuit 13. . This is due to the characteristics of the switching system (high load traffic) regarding the number of registers required for calling the subscriber circuit 25 and the trunk circuit 26 and the selection of the sender that occurs after receiving the selected number.
By determining each threshold value commensurate with the number of calls, the ``call loss rate'' of the entire switching system is reduced.

In FIG. 1, the portion indicated by a dashed line indicates the constituent elements necessary for the register/sender selection method of the present invention.

Next, the operation of the register/sender selection method of the present invention will be explained with reference to the flowchart of FIG.

First, the symbols and variables in FIG. 2 will be defined.

#SND...Quantity currently in use as a sender #REC
...Quantity currently in use as a register SND...Identification number value REC to be transmitted to the communication line equipment as a sender...Identification number value NC to be transmitted to the communication line equipment as a register...Communication line equipment Standard value for use of register/sender identification information - Upper limit of the number of registers/senders connected to the exchange system that are permitted to be used as registers or senders Selection limit value... Exceeds the above standard value for use The upper limit of the number of additional registers or senders when it is permitted to use them.Next, variables will be explained.

Rb...Register usage reference value sb...Sender usage reference value Ra...Register selection limit value Sa...Sender selection limit value Ru...Number of registers used ($REC above) Su...
Number of senders used (#5ND above) Therefore, the maximum values of register and sender usage are as follows.

Maximum register usage value...Rh+Ra Maximum sender usage value--Sb+Sa Also, as shown in the relational expression (1), the sum of the number of registers and senders used is greater than or equal to the sum of the usage reference values of registers and senders. Become.

Rh+-5b≦Ru + S u (
1) FIG. 2 is a flowchart showing the register or sender selection operation. First, it is activated by the generation of a resource selection request for a register or a sender, and it is determined whether the request is for a register or a sender (step 1ot). It is determined whether or not the usage standard value sb has been exceeded (step 102), and if the usage standard value has been exceeded (S Ll > S b ), it is determined whether the register resources can be allocated to the above request, that is, the number of registers used It is determined whether Ru is greater than or equal to the maximum register use value Rh + Ra (step 103). If Ru < Rb + Ra, then an empty register is captured and l is added to the number of registers #REC. Additionally, step 104') and perform the selection procedure (step 105).
, register sender identification information NC as sender
The knob 106) transmits that the sender selection operation is possible (step 107). Also, step 10
In step 2, if "N", that is, the number of used senders Su does not exceed the usage reference value sb, an empty sender is captured and 1 is added to the number of senders #SND (step 108), and the process moves to step 105. do. Further, in step 103, if "Y", that is, the number of registers used Ru exceeds the maximum register usage value Rb+Ra, it is transmitted that the sender selection is not possible (step 109).

On the other hand, in step 101, if a register is requested, it is determined whether or not the number of registers currently in use Ru exceeds a predetermined register usage reference value Rb (step 110). If (Ru>Rb), it is determined whether the sender resources can be allocated to the above request, that is, whether the sender usage number Su becomes greater than or equal to the maximum sender usage value sb+Sa (step 111). "N", i.e. S u < S b
+Sa, capture a vacant sender and add 1 to the number of senders #SND (step 112), perform the selection procedure (step 113'), set the register sender identification information NC as a register, step 114), It is transmitted that the register selection operation is possible (step 115), and "N" is transmitted in step 110.
.

In other words, the number of used registers Ru is the usage reference value R
If it does not exceed h, capture a vacant register and add 1 to the number of registers #REC (step 116).
, the process moves to step 113. Further, in step 01, if "Y", that is, the sender usage number Su exceeds the sender usage maximum value Sb+Sa, it is communicated that the sender selection is not possible (step 117).

[Effects of the Invention] As explained above, according to the register/sender selection method of the present invention, when the selection of a register or a sender is instructed according to call information, the common resource selection circuit determines the number of registers used. By selecting registers and senders so that the usage value of the register is less than or equal to a predetermined maximum value, and the number of senders used is less than or equal to the predetermined maximum value of sender usage, the Registers and senders can be selected and used.

Therefore, the degree of freedom in selection according to load amount and traffic balance is improved, which has the effect of improving services for subscribers accommodated in the electronic switching device.

In addition, since the register and sender exist as common resources, there is no need to provide separate register circuits and sender circuits, unlike in the past, so costs for these circuits themselves and the space for installing these circuits can be reduced. There are advantages.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an electronic exchange in an embodiment of the register sender selection system of the present invention, and FIG. 2 is an operational flowchart in the same embodiment. DESCRIPTION OF SYMBOLS 10...Central control unit, 13...Common resource selection circuit, 14...Common resource traffic control circuit, 15...-
Register sender instruction control unit, 20... communication path device,
23... Register sender control circuit, 24... Register sender drive circuit, 27... Register sender (
Common resources〉.

Claims (1)

[Scope of Claims] In a register/sender selection method for selecting a register for receiving and a sender for transmitting inter-office selection numbers in an electronic switching device using a storage program control method, there is provided a common resource that can be used commonly by the register and the sender. , a common resource selection circuit that selects a register or sender from the common resources when a register or sender selection is instructed according to call information, and the common resource selection circuit has a predetermined number of registers to be used. A register/sender selection method characterized in that registers and senders are selected such that the number of used registers is equal to or less than a predetermined maximum value of use of a sender, and the number of used senders is equal to or less than a predetermined maximum value of use of a sender.