SU1656693A2 - Automatic telephone exchange with quasi-indirect control - Google Patents

Abstract

The invention relates to telecommunications. The purpose of the invention is to provide the possibility of multicast connections of subscribers, the PBX contains subscriber sets 1, block 2 steps of subscriber search, cord sets 3, block 4 steps of register seek, registers 5, distributor 6 busy cord sets, distributor 7 busy registers, distributor 8 occupied These sets of connecting lines, sets of 9 connecting lines, corded set 10 group communication and sets 11 group marking. If the specifics of the object that services this PBX requires the allocation of a significant number of subscriber groups for communication meetings, the PBX uses more than one cord set 10. At the same time, only those sets 11 are blocked by which the link conference is already organized. The goal is achieved by the introduction of sets 10 and 11. 1 Il. yo

Description

The invention relates to automatic telecommunications, can be used primarily on institutional or departmental telephone networks and is an improvement of the invention according to the author. St. Ns 773954. The purpose of the invention is to provide the possibility of multicast connections of subscribers.

The drawing shows a structural electrical circuit of an automatic telephone station with quasi-direct control.

Automatic telephone station with quasi-indirect control contains subscriber sets 1, block 2 steps of subscriber search, cord sets 3, block 4 steps of register searches, registers 5, distributor 6, occupy cord sets, distributor 7, occupy re.isterov, distributor 8, occupy sets connecting lines, sets of connecting lines 9, corded

multicast group 10 and group marking sets 11.

The automatic telephone station with keazicosvolve control works as follows.

Work at internal and external communication is similar to the work of the station according to aut. St. Mg 773954.

Organization of group communication meetings.

After the PBX is called by one of the subscribers included in any group m of the selected subscriber groups, the state of its subscriber set 1 is changed. In this case, the corresponding input of block 2 is marked. This input is connected to one of the cord sets 3 according to the position of the distributor 6, which is labeled with a constant negative potential, one of the free cord sets, Cord kit 3, going into an occupied state, marks a positive

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short-term potential input to block 4. After that, the subscriber through blocks 2 and 4 is connected to one of the free registers 5, respectively, the position of the distributor 7, which is marked by the corresponding output of block 4 by applying a constant negative potential to it. Having received the ATC Response Alert signal, the subscriber dials the number of that of sets 11, which marks the group of inputs in block 2, which also includes the subscriber line of the subscriber organizing the group communication meeting. Upon receipt and fixing the corresponding number or code, register 5 transmits the command to the appropriate set 11. With this command, set 11 provides the generation and transmission of a warning signal of an upcoming, group communication on the n line, including the line of the organizing subscriber connection, and then after the expiration of this signal, which lasted 1-2 s, marks the group of n-inputs in block 2 by applying short-term negative pulses. Upon receiving a warning signal of an upcoming meeting-meeting, busy subscribers from amongst n will most likely hang up, giving preference to the meeting, which, as a rule, is organized to solve emergency tasks. The organizing subscriber must also hang up. After marking the line inputs in the field of the block 2, the n lines are connected through the block 2 to the cord set 10. From the latter, through the block 2, the continuous signal of the inductor call is transmitted to the subscriber lines for 2-3 seconds. Subscribers pick up their handsets from their telephones and carry out a communication meeting without leaving their workplaces. Some of the subscribers may exit the communication meeting before it ends by returning the handsets to the devices.

A subscriber from another group may need to organize a communication meeting when this communication is organized and takes place in another group. In that

In the event, the corded package 10 is blocked, which results in the formation at its output of a blocking signal (t-1) of the set 11, therefore the group communication organizer does not receive a warning signal

and perceives this information as a means of providing group communication. However, with a small number m, such situations are extremely rare. Typically, at PBXs, the number of separate groups of subscribers for which, by the nature of their work, group communications are required, does not exceed 3-5. If the specifics of the object that serves the proposed PBX requires the allocation of a significant number of subscriber groups for communication meetings, then more than one cord sets 10 can be used at the PBX. At the same time, only those sets 11 are blocked, with the help of which

communication meeting.

Claims (1)

Claims of the invention Automatic telephone station with quasi-indirect control by aut. St. NS 773954 characterized in that, in order to provide the possibility of group connections of subscribers, a cord set of group communication and m sets of group marking are entered into it, n outputs of each of which are connected to corresponding linear inputs of subscriber search step, n additional outputs of which are connected to the inputs and the first outputs of a cord group communication set, the second output of which is connected to the first inputs of the group marking sets, the second inputs of which are connected to the outputs of the respective registers.