RU13456U1 - DIGITAL AUTOMATIC TELEPHONE STATION - Google Patents

Abstract

A digital automatic telephone exchange including a central switching module, characterized in that it is equipped with a set of input / output port modules, which together with the central switching module form a star-like network architecture with a central switching module in its center, with input / output port modules connected to the central switching module through a unified intermodular interface based on the transmission of digital information in a serial code with a time division of standard PCM al, the input / output port modules interact with the network operating system at specially allocated time intervals of PCM paths for connecting peripheral input / output port modules to the central switching module using the standard HDLC protocol at 64 kbit / s, in addition, the station is equipped with a system synchronization unit, which is connected to the station elements by a synchronization signal distribution network, as well as an operator module, connected to the central switching module as an input module single / output ports and including a high-performance computer with large external memory and equipment for technical diagnostics of the station and the objects connected to it.

Description

Digital automatic telephone exchange

The utility model relates to communication technology that uses digital methods, algorithms and signals for transmitting voice information, and can be used as a telephone exchange for working in rural, urban combined networks, as well as office telephone exchanges for organizing departmental, institutional and production communications.

To assess the novelty and technical level of the claimed solution, we consider a number of well-known technical means of a similar purpose. A known system for transmitting digital telephone signals containing wired communication lines, subscriber concentration modules, each of which is connected to remote subscriber modules by dual-cable communication lines, a set of digital telephone sets, characterized in that a pairing unit of remote subscriber modules, a matching device of blocks, are inserted into it

M.cl. : НЗМ 3/00, Н04М 3/00

pairing of digital telephones, and wired communication lines are made in the form of a cable television line, and the linear inputs and outputs of the remote subscriber modules are connected to the corresponding inputs and outputs of the pairing blocks of the remote subscriber modules, the output of which is connected to one end of the television cable through the matching device of the subscriber modules, the other end of which is connected to the combined inputs of the matching devices of digital telephones, the outputs of which are through the corresponding blocks according The units are connected to the corresponding digital telephone sets, see RF patent No. 2042280, Н04М 3/00.

A unified module of an automatic telephone exchange with a control processor is known, comprising a central processor unit, a buffer random access memory (RAM) unit and a forwarding unit, N blocks of subscriber sets, a standard trunk unit connected to a standard trunk set, an overhead information processing hardware unit, a unit reference and clock frequencies generator, characterized in that serially connected overhead signal generator block is introduced into it and a hub unit, a memory unit, an address generation unit, series-connected hardware overhead processing information processing unit and a unit

buffer RAM and service information redirection, a transit information interface unit connected to a transit information bus, see RF patent No. 2039411, НЗМ 3/00.

According to the greatest number of similar features and the result achieved using the given technical solution is selected as a prototype of the claimed utility model.

The disadvantages of the prototype, not allowing us to achieve our goals, are:

bulkiness of equipment due to the large range of units used;

- insufficient level of additional types of services for subscribers and the operator.

The objective of the utility model is to simplify the design while improving the basic indicators of the station, as well as expanding the range of additional services.

The essence of the claimed utility model is expressed in the following set of essential features, sufficient to achieve the above technical result.

According to a utility model, a digital automatic telephone exchange including a central switching module is characterized in that it is provided with a plurality of input / output port modules,

forming together with the central switching module a star-type network architecture with a central switching module in its center, while input / output port modules are connected to the central switching module through a unified intermodule interface based on the transmission of digital information in a serial code with time division of standard PCM channels moreover, the input / output port modules interact with the network operating system at specially allocated time intervals of the PCM communication paths peripheral input / output port modules with a central switching module using the standard HDLC protocol at 64 kbps, in addition, the station is equipped with a system synchronization unit, which is connected to the station elements with a synchronization signal distribution network, as well as an operator module connected to the central switching module as an input / output port module and including a high-performance computer with large external memory and equipment for technical diagnostics of the station and connected to it objects.

This is the totality of essential features that provides a technical result in all cases to which the requested amount of legal protection applies.

The claimed technical solution is new, as it is characterized by the presence of a new set of features that is absent in all objects of equipment of a similar purpose known to us.

The immediate technical result that can be obtained by implementing the claimed combination of features is that the openness of the claimed station is improved due to the possibility of increasing the number of modules forming it, high connectivity of the station elements.

Obtaining the aforementioned technical result ensures that the object of the invention as a whole has a number of new useful properties, namely, expanding its functionality by expanding the range of additional services, as well as providing easy access to the internal data of individual modules.

The above allows you to recognize the claimed technical solution in accordance with the requirements of the utility model.

The essence of the utility model is illustrated in the drawing, which presents a structural diagram of the claimed digital automatic telephone exchange.

Digital automatic telephone exchange, including a central switching module 1, including a computer network 2,

the central switching field 3 and the system synchronization block 4. The station is equipped with a set of input / output port modules 5, which together with the central switching module form a star-type network architecture with a central switching module 1 in its center. The station is equipped with a system synchronization unit 4, which is connected to the station elements with a synchronization signal distribution network, as well as an operator module 6, connected to the central switching module as an input / output port module and comprising a high-performance computer with large external memory and equipment for technical station diagnostics and objects connected to it (not shown in the drawing).

The device operates as follows.

Digital automatic telephone exchange is built on a modular principle with distributed control. Modules 5 form a star-type network architecture, the core of which is played by the central switching module 1. It acts as a signaling network, message switching between peripheral modules of input / output ports 5, and channel switching when providing communication services. Peripheral modules 5 form ports for connecting various types of subscriber and trunk lines to the station. Communication of peripheral modules 5 with the central module

Switching 1 is carried out through a unified intermodular interface based on the transmission of digital information in a serial code with a time division of standard 64 kbit / s PCM channels. Depending on the required throughput of the communication path with the central switching module 1, the necessary number of PCM channels can be allocated to peripheral modules 5. The interaction of modules 5 is organized using a network operating system through specially allocated for this purpose time intervals of PCM communication paths of peripheral modules with the central switching module 1 using the standard HDLC protocol at 64 kbps. Intra-system signaling in the station is made via the same information transmission channels through which the system-switched data is transmitted.

The functions of the central switching module 1 are implemented under the control of a high-performance computer network 2. The communication medium is formed by specially allocated time intervals of the PCM paths of the central switching field 3, constructed on the basis of the space-time switching. The system synchronization block 4 provides synchronization of the station in a number of modes of its operation.

In order to increase the reliability of the station, the central switching module 1 forms a multiply connected distributed system, access to the functions of which from the peripheral modules 5 can be organized via separate channels independent of each other, while the functions of the system synchronization unit 4 in the central switching module 1 are duplicated .

The characteristics of the central switching module 1 in terms of the number of switched channels, the number of formed intra-system communication channels and performance are selected and flexibly configured depending on the needs of the implemented switching system.

Peripheral modules 5 contain an integrated high-performance microcontroller that controls the module equipment.

The peripheral module of a special type in the claimed station is the operator module 6, which performs the following functions:

-organization of interaction of the operator with the station;

- management of the configuration database of the station;

-Managing a database of statistics and tariffing stations;

-diagnosis of station equipment and lines;

- error monitoring and station alarms.

The composition of the operator module 6 differs from the composition of other peripheral modules 5 by the absence of linear equipment, however, the operator module 6 is equipped with an external memory device of sufficient capacity to store large amounts of information.

The main technical characteristics of the claimed station:

- capacity, numbers - 200-20000;

-number of additional types of services - 21;

-minimum unit for building numbers - 8;

- rated load, Earl, per line:

subscriber - 0.2,

- connecting - 0.8;

- supply voltage of a direct current source, V - 54 ... - 72;

- specific power consumption, W per number - 0.6;

-types of connecting lines:

analog - two-wire, three-wire, four-wire, six-wire,

Digital - IKMZO, IKM15.

Digital automatic telephone exchange provides the ability to connect the following types of telephone sets (TA):

- local payphones with and without tariffing calls, with a -TA with frequency dialing, -TA general purpose with pulse dialing, -paired TA, -TA with caller ID. The digital automatic telephone exchange provides additional types of services for subscribers: - priority call of the subscriber, - notification of an incoming call, - restriction for specified incoming calls, - call forwarding is unconditional even when the call is busy, - connection of subscribers, - permanent or continuous call the last number dialed, –– a malfunction message, –– a queue to a busy subscriber, –– switching for inquiries, –– conditional call forwarding, –– list communication conferencing, –– entry, is supplemented Ie and replacement in the list of participants in conference calls, -conference-communication with consecutive gathering of participants,

The claimed digital automatic telephone exchange implements a structure that is classical in simplicity, in which all types of subscriber and trunk lines are closed by a unified input / output port module, a switching field of various capacities, including duplicated ones, are dialed from one type of highly integrated typical replacement element (TEZ), and all service functions, including equipment for measuring subscriber lines, automatic telephone exchange diagnostics, are closed by the operator module.

The implementation of this structure became possible due to the development of the latest achievements of microelectronics, powerful specialized processors, the latest signal processing processors, optical relays, magnetic materials of a new class, etc.

Claims (1)

A digital automatic telephone exchange including a central switching module, characterized in that it is equipped with a set of input / output port modules, which together with the central switching module form a star-like network architecture with a central switching module in its center, while the input / output port modules connected to the central switching module through a unified intermodular interface based on the transmission of digital information in a serial code with a time division of standard PCM alas, the input / output port modules interact using the network operating system at specially allocated time intervals of PCM paths for connecting peripheral input / output port modules to the central switching module using the standard HDLC protocol at 64 kbps, and the station is equipped with a system synchronization unit, which is connected to the station elements by a distribution network of synchronizing signals, as well as an operator module, connected to the central switching module as an input module single / output ports and including a high-performance computer with large external memory and equipment for technical diagnostics of the station and the objects connected to it.