DE1847455U - PUSH BUTTON SET FOR MULTIPLE USE OF DIAL BUTTONS FOR INTERCOM SYSTEMS. - Google Patents

Description

Multiple use of selection keys of a key set ---------------------------- for intercoms ------------ The present innovation relates to a device which enables multiple use of selection keys of a key set for intercom systems. While with the previously known key sets, which are intended for use in intercom systems, a corresponding number of selection keys are required for these connections according to the desired number of participants, the improved device described here ensures a multiple of the use of a key set. According to the innovation, with an intercom system, as can be seen from the following description, 28 participants can be reached by means of a single key set of only 10 keys.

Figure 1 shows an example of such a selection button set. There are 6 buttons in the top row arranged with the capital letters A, B, C, D, E, F and in The bottom row has four more keys labeled 1, 2, 3, 4, and an off key on the far right and finally a key labeled K on the far left, their purpose will be described below. In In connection with Figure 2, in which a circuit diagram of this selection button set is reproduced, the mode of operation of the innovation according to the invention is illustrated.

This key set is now in seven groups of four participants each divided up.

Stations 1 - 4 are reached by pressing the respective button Keys 1 - 4, stations 5-8 by pressing the respective keys together A, 1-A, 4; the stations 9-12 by combined pressing the "B, 1 - B, 4;" "13-16" combined Pressing in the cd 1-a, 4; 17-20 combined pressing of the "D, 1 - D, 4; 21 24 combined pressing of the "E, 1 - E, 4;" "25-28" combined pressing of the "F, 1 - F, 4.

In this way, up to 28 Intercom stations with equal rights are operated.

The dialing station reports with the number-letter combination assigned to it. The selected participant hears the call and presses the appropriate key (n) and replies. The conversation runs without any further operation. The conversation is ended when both call partners press the "Off" button. The K key is used to switch conference calls and for priority switching.

The proposed innovation offers further improved possibilities regarding conducting conference calls.

These are only ever possible in one group, e.g. B. 1-4; A, 1-A, 4; B, 1-B, 4, etc.; but not between stations in different groups, e.g. B. C, 2 with A, 1 and D, 4. Select the desired conference participant according to your needs the addressed participants in turn the announced key combinations, z. B. B, 1 + B, 3 if the opening set is B, 2.

To make the conference call, both participants must Press their (not locked) key K, which activates the privacy function and the busy indicator are canceled and the conference call is now between the three participants B, l; B, 2 and B, 3 can be performed.

The innovation is not limited to the examples given. ---- Protection claims

Claims (1)

(New) protection against breakage ------------------------------------ Pushbutton set for multiple use of selection buttons for intercom systems, characterized in that the pushbutton set consists of preferably two rows of pushbuttons with compression springs and electrical connection points, with only six pushbuttons in one row, labeled A to F, and also only in the second row six pushbuttons, which are designated with 1 to 4 and the outside buttons with K and "Off", so that the selection buttons can be used in the respective combination and thereby a multiple use of the given connections is achieved, and the outside button K also for the switching of conference calls and is used for priority switching. ---