RU2233555C1 - Method for establishing telephone connection between external subscriber and private exchange subscriber through automatic telephone exchange - Google Patents

Abstract

FIELD: electrical communications and telephony; private exchanges.

SUBSTANCE: when incoming call coming from external subscriber is transferred through telephone exchange or exchange network to internal network subscriber connected to private exchange, communication between external subscriber and private exchange is discontinued for the time being at telephone exchange or at one of telephone exchanges out of their network, and as soon as communication is established between external subscriber and private exchange, their communication is recovered at telephone exchange; during mentioned open-circuit interval in line between external subscriber and private exchange information is transferred to external subscriber from telephone exchange or from one telephone exchange to other in telephone exchange network over communication lines vacant during this period, or connections in telephone exchange network are changed over.

EFFECT: more reasonable use of communication channels between external subscriber and telephone exchange.

1 cl

Description

The invention relates to telephones and can be used in systems containing office automatic telephone exchanges (PBX).

A known method of pairing an automatic telephone exchange (PBX) operating in an asynchronous transmission mode, in which a PBX communication channel is established to connect the PBX network and a subscriber requesting access to the PBX network, and the signaling information of the subscriber that is received from the PBX communication channel is converted to the corresponding cell PBX network (see application RU 2000115172).

This method does not allow using the time interval from the moment of transferring an incoming call to a subscriber of the internal network until the moment of establishing the connection of the latter with the PBX.

There is also a method of establishing a telephone connection of an external subscriber via a PBX or a PBX network with a subscriber of an internal network connected to a PBX, which is a terminal device relative to a PBX, and the connection to a subscriber of an internal network is allocated to the PBX no later than the connection is established from the terminal device (PCA, PBX) ), to the switching node (KU) transmit information identifying the telephone subscriber to which the connection belongs; as the terminal device, a mailbox system (PCS) is used, while a personal identification number is transmitted as information identifying the telephone subscriber (PRS-1 ... PRS-4), which the telephone subscriber transmits to the terminal device as confirmation of access rights to the mailbox memory block allocated to it, or information identifying the telephone subscriber, obtained by decoding a personal identification number; the terminal device is a network access node of the Internet service provider, the information transmitted to the switching node (KU) of the public network is the number of the terminal device of the called subscriber with whom the telephone connection is established via the Internet; the terminal device is an office telephone exchange (PBX) with end-to-end dialing, and the information transmitted to the switching node (KU) of the public network is the internal telephone number of the office telephone exchange of the corresponding subscriber (AU-1 ... AU-N) (see application RU 2000109284).

This technical solution is taken as a prototype of the present invention. It allows you to identify the telephone subscriber to which the connection belongs, however, like the analogue described above, it does not provide the possibility of using the time interval between the moment of transferring the incoming call to the subscriber of the internal network until the connection between the subscriber of the internal network and the PBX is established, that is, until the moment when the latter will pick up the phone. As a rule, this time interval is from 5 to 30-40 seconds, and the external subscriber hears a music screen saver coming from the PBX. In this case, the communication channel between the external subscriber and the PBX is irrationally loaded, and in the case of the PBX network, the communication channels between the PBX included in the network (inter-office communications).

The present invention is based on the solution of the problem of ensuring the rational use of communication channels between an external subscriber and a PBX, as well as inter-office communications in the case of a PBX network in the time interval between the transfer of an incoming call to an internal subscriber and the moment the connection is established with the PBX.

According to the invention, this problem is solved due to the fact that in the method of establishing a telephone connection of an external subscriber through an automatic telephone exchange (PBX) or a PBX network with a subscriber of an internal network connected to a corporate automatic telephone exchange (PBX), which is a terminal device relative to the PBX, such a connection to the subscriber of the internal network is carried out in the PBX, when transferring an incoming call to the subscriber of the internal network, they temporarily disconnect the external his subscriber with the PBX, and when a subscriber connects the internal network with the PBX to the PBX, the connection between the external subscriber and the PBX is restored; during a break in communication between the external subscriber and the PBX, the communication lines that are released during this period transmit information to the external subscriber from the PBX or transfer information from one PBX to another in the PBX network, or reconnect the connections in the PBX network.

The applicant has not identified sources containing information about technical solutions identical to the present invention, which allows us to conclude that it meets the criterion of "novelty."

Thanks to the implementation of the distinguishing features of the invention, an important new property of the object is determined: it becomes possible to rationally use the freed communication lines.

The applicant has not found any sources of information containing information about the impact of the claimed distinctive features on the technical result achieved as a result of their implementation. This, according to the applicant, indicates that this technical solution meets the criterion of "inventive step".

This method in a specific example is implemented as follows.

At the moment of transferring an incoming call to a subscriber of the PBX internal network, in particular, by pressing the corresponding buttons on the control telephone set of the PBX dispatcher, the incoming signal is transferred to the required extension. At the same time, a control signal is sent from the PBX to the PBX, where the connection between the external subscriber and the PBX is broken. This signal from the PBX to the PBX can be sent using any simple electronic device, such as a control pulse generator, or by software. Until the PBX extension subscriber picks up the communication channel between the external subscriber and the exchange or communication channels between the exchange in their network. Through these channels it is possible to transfer useful information to an external subscriber from a telephone exchange, for example, of an advertising nature, or information from one telephone exchange to another in a telephone exchange network, for example, telemetry, or to reconnect connections in a telephone exchange network in case of overload of inter-office communications. When a subscriber of the internal network connects to the PBX, another control signal is sent from the latter to the PBX; due to this, the exchange of the external subscriber with the PBX is restored on the PBX.

To implement the method, equipment conventional for the art is used, which determines the compliance of the invention with the criterion of “industrial applicability”.

Claims (1)

A method of establishing a telephone connection of an external subscriber through an automatic telephone exchange (PBX) or a PBX network with a subscriber of an internal network connected to a corporate automatic telephone exchange (PBX), which is a terminal device relative to a PBX, the allocation of such a connection to a subscriber of the internal network is carried out in the PBX, characterized in that when transferring an incoming call to an internal network subscriber, the external subscriber’s connection with the PBX is temporarily disconnected at the PBX or at one of the PBXs in their network, and when establishing the subscriber’s internal network connections from the PBX to the PBX restore the external subscriber’s communication with the PBX, while during the disconnection of the external subscriber with the PBX, the lines released during this period transmit information to the external subscriber from the PBX or transfer information from one PBX to another in the network PBX, or carry out the switching of connections in the PBX network.