JPS6222515B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a trunk selection control system for a central control circuit of a commonly controlled automatic switching system.

Conventional electronic exchanges are generally configured so that one central control circuit controls the entire system. Therefore, this central control circuit needs to have large processing capacity and multiple functions. In other words, the functions to be processed by this central control circuit are: register control such as selection signal detection, counting, and accumulation, trunk control such as incoming signal detection and recovery signal detection, and key information from the central office line relay board. Control of various signals such as control of office line relay stand such as detection and accumulation of data, dial tone connection, extension line interconnection, office line origination connection, office line incoming connection, trunk line origination connection, trunk line incoming connection, relay connection , call forwarding connections, speed dial connections, variable call forwarding connections, etc. In this way, one central control circuit executes various connection controls. Therefore, it was necessary to use a central control circuit designed exclusively for exchange control. Furthermore, a central control circuit with such a large processing capacity and multiple functions inevitably has the disadvantage of being expensive and requiring a large mounting space. Furthermore, if the line capacity of the exchange is increased, a new central control circuit with greater processing power must be developed.
Another disadvantage was that in order to change its functions, a very large amount of programs had to be changed.

The purpose of the present invention is to eliminate the above-mentioned drawbacks, to always use the same control system regardless of the line capacity or function of the exchange, and to create an optimal system according to the conditions required for the exchange. configuring the
By using multiple inexpensive general-purpose microprocessors, even switching equipment with large line capacity can be controlled, and in this way, the control circuit is composed of multiple microprocessors, and the functions of these multiple microprocessors are divided. An object of the present invention is to provide a trunk selection control method for an automatic switching system using a distributed control method, which makes it possible to determine the optimal value of the trunk selection control method.

In order to achieve this object, the present invention provides a control means for detecting a control signal arriving from an external device to a device connected to a communication path network, and a control signal for transmitting a control signal from the device connected to the communication path network to the external device. a signal control processor provided corresponding to a predetermined group of devices connected to the communication network; and at least a signal control processor provided in accordance with the amount of calls to be added for controlling the connection of the communication network. a connection control processor, means for transferring information between the signal control processor and the connection control processor, a memory for storing trunk busy information in the signal control processor, and a trunk selection control. means for transmitting trunk selection control commands to the signal control processor within the connection control processor, receiving information on trunk selection control results returned from the signal control processor, and transmitting trunk selection control commands to the connection control processor. The signal control processor performs trunk selection control by
Information on the trunk selection control result is sent from the signal control processor to the connection control processor, and the connection control processor receives the information on the trunk selection control result.

Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram of an embodiment of the invention. In FIG. 1, a communication path system 1 is associated with a signal control processor 2, and the signal control processor 2 and connection control processor 3 are connected to an information transfer bus 13.
connected via. The control system includes at least one signal control processor 2, at least one connection control processor 3, and an information transfer bus 13. The signal control processor 2 is a processor provided to control the reception and transmission of various control signals regarding communication equipment. That is,
The signal control processor 2 has line circuits, trunks,
Means for controlling the detection of signals arriving from external equipment in the office line relay board control circuit, register, etc., line circuit, trunk, register, means for controlling the sending of control signals to the external equipment in the office line relay board control circuit, and trunk. and means for executing various control operations such as selection under commands from a connected control processor. The connection control processor 3 detects whether or not there is an activation request from the signal control processor, and when it identifies the activation request type, performs connection control operations corresponding to the activation request type, such as dial tone connection, extension line interconnection, and central office line connection. Performs outgoing connections, central office line incoming connections, trunk line outgoing connections, trunk line incoming connections, relay connections, automatic forwarding connections, speed dial connections, variable call forwarding connections, etc. In the process of various connection control operations, the connection control processor 3 transmits trunk selection command information from the trunk selection circuit 9 to the signal control processor 2 via the information transfer control circuit 8 and the information transfer bus 12 when the need for trunk selection control arises. Send out. The information transfer control circuit 4 of the signal control processor 2, which has received this trunk selection command information, sends a trunk busy information read command to the memory control circuit 5. The memory control circuit 5 issues a read instruction to the trunk busy information storage memory 6, reads out information indicating whether the specified trunk is free or busy,
The read information, that is, the identification information of the trunk's idle state or busy state, is sent to the information transfer control circuit 4. Further, the information transfer control circuit 4 sends a trunk state detection command to the trunk state detection circuit 7. The trunk status detection circuit 7 sends control information to the trunks belonging to the communication path equipment 1, and determines whether the trunk status information obtained as a result is an incoming signal reception status, a response signal reception status, or a recovery signal reception status. The information to be displayed is transferred to the information transfer control circuit 4.
Send to. The information transfer control circuit 4 sends the received trunk busy information and trunk status information to the connection control processor 3 via the information transfer bus 12. The connection control processor 3 sends the trunk busy information and trunk status information received from the signal control processor 2 to the trunk selection circuit 9 via the information transfer control circuit 8, and stores this information in the trunk selection circuit 9. . On the other hand, the trunk selection circuit 9 provides information indicating the type of the designated trunk, such as an originating register trunk, a central office line incoming trunk, a central office line outgoing trunk, a trunk incoming trunk, a trunk outgoing trunk, etc. Information indicating which trunk it belongs to is read from the trunk type information storage memory 11 via the memory control circuit 10, and the read result is sent to the trunk selection circuit 9 and stored in the trunk selection circuit 9. The trunk selection circuit 9 comprehensively determines the received and stored trunk busy information, trunk type information, and trunk status information,
It is determined whether the trunk at the designated storage position matches the selection conditions. As a result of identification,
If the selection conditions are not met, the accommodation position information is updated and the same operations as described above are repeated. When a trunk meeting the selection conditions is detected in this way, the information stored in the trunk storage position storage counter in the trunk selection circuit becomes the storage position information of the selected trunk. This selected trunk accommodation position information is stored in the trunk selection circuit 9. The connection control processor 3 uses the trunk accommodation position information stored in the trunk selection circuit 9 to execute connection control operations.

As explained above, the present invention makes it possible to always use the same control method regardless of the line capacity or function of the exchange, and to configure an optimal system according to the requirements of the exchange. By using a plurality of inexpensive general-purpose microcomputers, it is possible to obtain a trunk selection control system that is optimal for a control system with a large line capacity.

In the embodiments of the present invention, it is assumed that the signal control processor has multiple functions, and a system has been described in which the control range of the signal control processor includes control means such as line circuits, trunks, registers, and office line relay boards. The control range of the signal control processor may include a single type of equipment or any combination of multiple types of equipment from among line circuits, trunks, registers, and station line relay boards; In addition, it goes without saying that the number of each device is arbitrary, and the processing capacity and function of multiple connected control processors are all the same, but even if the processing capacity is different but the function is the same, the processing It is clear that the invention can be practiced with the same capabilities and different functions, or with different processing capabilities and functions. Furthermore, the present invention can be implemented regardless of whether the control system is a wire logic system or a stored program control system, and the components constituting the control system circuit may include integrated circuits or semiconductors. Needless to say, electronic components such as elements or electromagnetic components such as relays may be used.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the invention. DESCRIPTION OF SYMBOLS 1... Communication path system device, 2... Signal control processor, 3... Connection control processor, 4... Information transfer control circuit, 5... Memory control circuit, 6... Trunk busy information storage memory, 7... Trunk state detection circuit, 8... Information transfer control circuit, 9... Trunk selection circuit, 10... Memory control circuit, 11... Trunk type information storage memory, 12... Information transfer bus.

Claims (1)

[Claims] 1. At least one signal control processor that controls signals of a plurality of trunks connected to a communication path network, at least one connection control processor that controls connections of these trunks, and a connection control processor that controls connections between the signal control processor and the connection control processor. trunk busy information storage means for storing busy information of each of the trunks; and a trunk status for detecting the state of each of the trunks. detecting means; receiving trunk selection command information from the connection control processor; and transmitting trunk busy information obtained from the trunk busy information storage means and trunk state information obtained from the trunk state detection means to the connection control processor; The signal control processor is equipped with a first information transfer control means for controlling the trunk type, and a trunk type information storage means for storing type information of each of the trunks, and a second information transfer control means for storing the first information transfer control means.
The trunk busy information, the trunk status information, and the trunk type obtained from the signal control processor via the second information transfer control means by sending the trunk selection command information to the information transfer control means of A trunk selection method for an automatic exchange, characterized in that the connection control processor is equipped with trunk selection means for selecting these trunks according to trunk type information obtained from the information storage means and storing storage position information of the selected trunks. .