JPS592235B2 - electronic exchange method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to central processing units and various trunks, subscriber scanning devices, communication path drive devices, and other communication path system devices in an electronic switching system based on stored program control. This relates to the method of transmitting and receiving various signals between the two.

(Prior Art and its Problems) The conventional electronic exchange system of the storage program control system is of the space division type, and is configured as shown in FIG. 1, for example.

To explain the conventional system using Fig. 1, in Fig. 1, CC represents the central processing unit, MM represents the storage device, and SRD
translates the information received from the central processing unit CC and identifies a designated device among the scanning device SCN, signal distribution device SD or speech trunk drive device STC, which will be described later;
The SCN is a signal receiving and distributing device for distributing information received from the central processing unit CC to the identified devices, and for receiving information from these devices and transferring it to the central processing unit CC. (on-hook or off-hook) and the status of various trunks are constantly monitored and detected, and the signal reception and distribution device S
PRB is a common bus for exchanging information between the central processing unit CC, storage device MM, and signal reception distribution device SRD, and SD is a signal reception device. Based on the information sent from the central processing unit Cc via the distribution device SRD, a signal distribution device for controlling the operation and recovery of current holding type relays for sending out dial pulses of the outgoing center trunk OST is sent to the STC.
is a communication path trunk driving device for controlling the closing and opening of the communication path switch network SNW and the operation and recovery of pattern relays of various trunks based on information received from the central processing unit CC via the signal reception and distribution device SRD. , COT, 10T, OR, RGT, HWT and OST
are respectively a central office line trunk, a local trunk, an outgoing register, a calling signal trunk, a howler sound trunk, and an outgoing center trunk (hereinafter collectively referred to as ``Yetane trunk'').

), LR represents an extension circuit, SNW represents a call path switch network, and EXT represents an extension line. In the electronic switching system using the storage program control system shown in Figure 1, the logical operations that handle functions such as monitoring calls, supplying current, transmitting and receiving signals, and testing communication paths according to call processing are converted into software. , since the state of the communication path is stored as a map in the storage device MM, the various trunks have functions such as receiving monitoring signals from the scanning device SCN and transmitting and receiving selection signals to and from the central processing unit CC; That is, it has only a function of transferring information representing the state of extensions and lines to the central processing unit CC, but does not have a function of processing received information, and its functions are extremely simplified.

Therefore, the above-mentioned valley trunk is connected to the central processing unit Cc via the scanning device SCN, the channel trunk drive device STC, or the signal distribution device SD and the signal reception and distribution device SRD, and the selection signal is received in the valley trunk. The detection of the states of the various trunks is carried out by the scanning device SCN and the signal reception and distribution device SRD, and the transmission of selection signals from the trunks and the control of the various trunks are carried out by the signal reception and distribution device S.
The signals are processed through the RD and the trunk drive device STC or the signal distribution device SD under the control of the central processing unit CC in accordance with their respective dedicated programs. Therefore, although the functions of the above-mentioned Tani-tane trunks are extremely simplified and the circuit configuration thereof is also simplified, since it is necessary to send and receive the T-tate information in pieces, the interface between the above-mentioned various trunks and the central processing unit CC is reduced. As mentioned above, the Ace includes a scanning device SCN (including an extension scanning circuit), a communication path trunk drive device STC (including a communication path switch network drive circuit), a signal distribution device SD, and a signal reception distribution device S.
RD is required, and the burden on the software is also large, leading to a complicated and large-scale program configuration.

This type of conventional system has an extremely large number of trunks in large-scale telephone exchanges and relatively large-capacity private branch exchanges, so simplification of the trunk configuration has great economic benefits, but Since the number of trunks is relatively small in a relatively small-scale private branch exchange with about 100 to 200 lines, the above-mentioned scanning device S is
CN, communication path trunk drive device STC, signal distribution device S
D and signal reception distribution device SRD account for a large proportion;
In addition, the complexity and scale of the program greatly impairs the cost performance of the exchange as a whole.

(Objective of the present invention) The present invention aims at optimizing the division of functions between hardware and software in an electronic switching system based on a storage program control system, and economically constructs a relatively small-scale switching system including software. The purpose is to

(Summary of the Invention) The present invention provides a series of circuits for transmitting and receiving information to and from a central processing unit in a Tanitane trunk, an extension scanning device, a communication path switch drive device, etc. in an electronic exchange system based on a storage program control system. The central processing unit and each of the above devices are directly connected by a common bus line without going through a signal reception distribution device, signal distribution device, trunk drive device, etc. The configuration is such that information is exchanged by directly specifying the call route switch driving device and the communication path switch driving device, and in particular, the central processing unit performs the detection of the trunk status and the trunk control for each trunk at the same time. By doing so, the software configuration is simplified and the size is reduced.

Specifically, the state detection device and relay drive device of the Yatane trunk are integrated into the Yatane trunk, and the connection between the central processing unit and the Yatane trunk, extension scanning device, and communication path switch driving device is installed. A common bus line for transmitting and receiving information without the intervention of a signal reception distribution device, an address line for specifying individual devices from the central processing unit, and a write/read line for specifying the distinction between sending and receiving information. directly connected to the Yatane trunk, extension scanning device, and communication path switch drive device to receive and store the Yatane control signal from the central processing unit, and translate and store the signal into a form suitable for control.
A series of circuits for converting and converting and translating various status display signals into a form suitable for processing by the central processing unit, and a series of circuits for sending the signals to the central processing unit are provided. Trunk level state detection and level control can be executed for each trunk at the same time.

(Description of Embodiments of the Present Invention) Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 is a relay system diagram of an electronic exchange using the storage program control method according to the present invention.
C is a communication path switch drive device for controlling the closing and opening of communication path switches based on information received from the central processing unit CC, and ADL is various trunks and a scanning device SCN.
and the address lines provided between the communication path switch driving device SC and the central processing unit CC, corresponding to each device, and the WRL is connected to various trunks, the scanning device SCN, the communication path switch driving device SC and the central processing unit CC. The write/read line provided in common between PRB・1
and PRB.2 respectively represent common buses provided between the central processing unit CC and the scanning device SCN, the communication path switch driving device SC and various trunks, and between the central processing unit CC and the storage device MM. , and other symbols represent the same ones as in FIG. 1 above.

However, in this embodiment, the scanning device SCN has only the function of detecting internal on-hook and off-hook, and does not have the function of scanning the trunk. As shown in FIG. 2, in the embodiment of the present invention, the central processing unit CC, central office line trunk COT, local trunk IOT, outgoing register 0R, call signal trunk RGT, howler trunk HWT, outgoing center truck 0ST, etc. Various devices such as the scanning device SCN and the communication path switch driving device SC are directly connected via a common bus PRB-1 for exchanging information, and the central processing unit CC and the various trunks and scanning device SCN are , address lines ADL for specifying the various devices described above are provided between the communication path switch driving device SC and the central processing device C.
A write/read line WRL for distinguishing between transmission and reception of information is provided between C and the above-mentioned Tanitane device in common with the above-mentioned Tanitane device.

Further, the central processing unit °C and the storage device MM are directly connected via a common bus PRB.2.

The above-mentioned scanning device SCN, communication path switch driving device SC and Tanitane trunk have a receiving and accumulating circuit that receives and accumulates various control signals from the central processing unit CC, and scans the various signals inputted to the receiving and accumulating circuit. A translation/conversion circuit that translates and converts into a form suitable for execution of control processing in the device SCN, channel switch drive device SC and various trunks; It is equipped with a signal conversion and sending circuit that translates and converts various status display signals after control processing into a form suitable for processing by the central processing unit CC, and then sends the converted signals to the central processing unit CC. The central processing unit CC, the above-mentioned Tanitane trunk, the scanning device SCN, and the communication path switch driving device SC can be directly connected via a common bus PRB.1. The central processing unit CC uses the program stored in the storage device MM to access the storage device M via the common bus PRB.2.
In accordance with the information output from M, direct individual access is made to the scanning device SCN, channel switch drive device SC, and Yatane trunk via the common bus PRB.1, and input/output processing is executed.

At this time, the designation of the device that should execute the input/output processing from the central processing unit CC is made via the address line ADL provided corresponding to the scanning device SCN, the channel switch drive device SC, and the valley device of the valley trunk. , and central processing unit CC
The distinction between input and output from the scanning device SCN, that is, whether the information to be processed is transmitted information or received information, is determined by the scanning device SCN;
The designation process and the classification process are carried out by well-known methods via the communication path switch drive SC and the write/read line WRL commonly connected to various trunks, etc. In particular, for the Tanitane trunk, processing to be executed such as reading the status and controlling the trunk is connected to the address line A corresponding to the trunk.
Processes that are individually designated by DL and to be executed are collectively executed for each trunk.

In the above explanation, the scanning device SCN, channel switch drive device SC, and Tanitane trunk were explained as examples of devices to be individually accessed from the central processing unit CC, but the explanation is not limited to only these devices, for example, a relay stand, The present invention can be implemented with any device that can be controlled from the central processing unit CC, such as a station line display panel.

(Effects of the present invention) According to the present invention, the central processing unit CC, the scanning device SCN,
It is directly connected to the communication path switch drive device SC and various trunks, etc. by a common bus line, and the central processing unit CC can individually specify access to the above-mentioned valley devices through the address lines corresponding to each device. For example, not only are devices that play the role of an interface such as a signal reception distribution device, a signal distribution device, a trunk drive device, and a trunk scanning device unnecessary, but also the central processing unit CC, scanning device SCN, and channel switch drive device SC are not required. Information for specifying the devices and circuit parts to be accessed from the central processing unit CC is no longer necessary for the exchange information between the central processing unit CC and the Tanitane trunk, etc., and the necessary information is the scanning device SCN, communication path switch drive device SC, and the communication path switch drive device SC. Only information for displaying and controlling the status of various trunks, etc. is required, and the exchange information can be easily configured.

In addition, the status display and control of various trunks, etc. for trunks, etc., which are individually designated by address lines, is processed to a certain extent by processing the information that was previously processed by software, so it is relatively small-scale processing. The functions of the hardware and software in the switching equipment can be distributed optimally, and as a result, the burden on the software is dramatically reduced compared to the increase in hardware in trunks, etc., making the switching equipment economical. It can be configured as follows. As described above in detail, by implementing the present invention, it is possible to economically configure the hardware and software of a storage program control system, especially a relatively small-scale electronic exchange, and the present invention is extremely remarkable. It is effective.

[Brief explanation of the drawing]

FIG. 1 is a relay system diagram of a conventional electronic exchange system, and FIG. 72 is a relay system diagram of an electronic exchange system according to an embodiment of the present invention. Explanation of symbols: CC...Central processing unit, MM...
... Storage device, SRD ... Signal reception and distribution device, SCN ... Scanning device, SD ... Signal distribution device, STC ... Communication path trunk Drive device, SC...Communication path drive device, COT...
・・Station line trunk, IOT・・Internal trunk, 0R・・・・Call register, RGT・・・・・
Ringing signal trunk, HWT...howler sound trunk, 0ST...outgoing center track, LR...
...Extension circuit, SNW...Call path switch network, EXT...Extension, PRB・0,P
RB・1, PRB・2・・・・・・Common bus, ADL・
...Address line, WRL...Write/read line.

Claims (1)

[Claims] 1 In the electronic exchange method of the storage program control method,
The central processing unit and the various devices that execute processing according to instructions from the central processing unit are connected by a bus line provided in common to the various devices, and a bus line provided individually corresponding to the various devices. It is directly connected by an address line and a write/read line provided commonly to the various devices, and the central processing unit directly specifies the device to execute processing among the various devices through the address line. The distinction between signal transmission and reception in the process to be executed is instructed via the write/read line, and the signal is transmitted between the central processing unit and the device to execute the process via the bus line. An electronic exchange system characterized in that exchange control is performed by sending and receiving.