JPS5833347A - Exchanging system with multiaddress communication function - Google Patents

Abstract

PURPOSE:To ensure various functions to each other among telephone sets in addition to various conditions of the multiaddress communication without impairing the proper purpose of the telephone, by separating the originating or incoming from the multiaddress communication system by the will of the subscriber although the multiaddress communication function is provided. CONSTITUTION:A telephone exchange subscriber line receives the supply of the multiaddress communication information from one of unspecified plural subscribers TEL0-TELn. When the multiaddress communication information given among telephone exchange subscriber terminals 0-n corresponding the telephone exchange subscriber lines is received, the subscriber line is set at a high level of impedance to a telephone exchange EX in terms of AC. The subscriber line is separated from the multiaddress communication system when the telephone exchange is connected through the subscriber telephones TEL0-TELn. The incoming is given to the terminals 0-n corresponding to a subscriber passed through the exchange EX from unspecified plural subscribers. At the same time, the multiaddress communication information is supplied from the originating subscriber to the multiaddress communication system via the terminals 0-n.

Description

[Detailed description of the invention] The present invention relates to a switching system with added broadcast communication function.

Conventionally, in exchanges equipped with a broadcast communication function, a system has been used that is completely separated from the exchange function during broadcast communication, and it is not possible to satisfy the request for connection to the exchange according to the will of the subscriber. Ta. Although this is intended to be economical by sharing subscriber lines, it has the disadvantage that it deviates from the original purpose of telephones, which is to be able to call any party without any restrictions. Was.

The present invention focuses on this point, and while having a broadcast communication function,
According to the will of the subscriber, a switching system is provided in which the system is disconnected from the broadcast communication system when making or ending a call, and has the original telephone exchange connection function.

According to the present invention, there is provided a telephone exchange subscriber line to which broadcast communication information from one subscriber among an unspecified number of subscribers is supplied, and a telephone exchange subscriber line and a telephone exchange corresponding to the line are provided. means for providing high alternating current invitance to the exchange side when receiving broadcast communication information, and when a subscriber's telephone is connected to the telephone exchange, the subscriber's telephone is disconnected from the telephone exchange system. The method is such that a call is received from an unspecified number of subscribers to a subscriber terminal corresponding to one subscriber through the exchange by performing an exchange receiving operation, and a call is received from the originating subscriber via the incoming subscriber terminal. A switching system with added broadcast communication function is obtained, which is characterized by having means for supplying broadcast communication information to a broadcast communication system.

That is, in the present invention, the source of broadcast communication information is one of the subscribers provided with the broadcast communication function, or one of the subscribers including other exchanges not provided with the broadcast communication function. The communication system is provided with a supply connection terminal accommodating a subscriber terminal exclusively used for incoming calls, and the information is obtained by receiving a call from the subscriber to the terminal using a known exchange receiving operation,
and.

A means is provided for supplying broadcast communication information to subscribers who are not busy among subscribers provided with a broadcast communication function. The subscriber with the broadcast communication function is provided with means for preventing the broadcast communication information from leaking to the switching subscriber circuit in order to supply the broadcast communication information to the subscribers who are not busy.

The invention will now be explained in detail with reference to the drawings. Figure 1 is a circuit diagram of a circuit using a relay as an embodiment of the present invention, where BX is an exchange, TBLO to TBLn are subscriber telephones, and 0 to n are subscriber terminals in the exchange EX. .

In FIG. 1, the explanation will proceed assuming that the horizontal telephone O is the source of broadcast communication information. In the state shown in this figure, the telephone functions simply as a telephone equipped with an exchange.

Here, the horizontal telephone O makes an or-hook, and when dialing in a known manner to receive a call to the subscriber terminal S, a known exchange terminating operation is carried out, and C is included, which also means that the exchange is connected.
The O@@ device continues operating until the telephone horizontally placed O goes on-hook.

When a call arrives at the subscriber terminal S, the SO relay is operated, and a DC loop is formed to the exchange via the 80-person relay coil, so a known exchange response operation is performed, and the call is sent to the subscriber terminal of the exchange. 0 and subscriber terminal S are connected.

Here, the 80-person relay is activated by the DC loop, and information indicating that a broadcast communication request has occurred is sent to the subscriber meter device n, which is equipped with a broadcast communication function, via the contact 80a''.
Each is transmitted.

At this time, for subscribers who are not connected to the exchange by off-footer of their telephones, that is, subscribers who are not busy and who are given a broadcast message TBL1 = TBLn, C1 to C1.
Since the ON relay is not operating, the corresponding relay among the CIA to CNA relays receives the information indicating the relay communication request through the 80a'' contact and operates.

Due to the operation of this CIA-CNA relay, broadcast information is supplied from the horizontal telephone O connected according to the above procedure to the broadcast communication function-enabled subscribers TBLx to 'l'ELN which are not busy through the contacts 80a0 and S Oa''. .

At this time, the voice information is supplied to the exchange in the subscriber TILN that is not busy, and the blocking function by the L-coil is activated by the CIA-CN relay so that the AC impedance is high to avoid loss. Contact C1a is opened by the operation of .

C1a''-Cna@, Cna'' opens and works.

In FIG. 1, it is assumed that the telephone TELn is in broadcast communication but has gone off-hook. Since the DC loop of the telephone horizontally placed N can activate the exchange through the coil LN, the exchange detects the OFF 7-tap state and enters the known dial waiting state, and activates the CN relay.

Since the operation of the CN relay restores the 08 person relay, it is separated from the broadcast communication system and becomes equivalent to a known exchange-accommodating telephone.

In this manner, the present invention has made it possible to combine the functions of the telephone without sacrificing the original purpose of the telephone, even though it is equipped with a broadcast communication function. This means that
For example, it is possible to incorporate public address equipment into a telephone exchange; conventionally, public address equipment within a premises requires separate lines and equipment.

Furthermore, it is possible to provide a means that can meet the various demands of modern large buildings that have multiple tenants and require multiple public address facilities using only telephone line equipment.

The present invention is also applicable to screen-based broadcast communication such as in video telephone exchanges.

In the explanation of the embodiment in FIG. 1, we did not mention the subscriber's telephone equipped with the broadcast communication function, but in the on-hook state, the receiving circuit, except for the bell circuit, normally functions both in terms of direct current and alternating current. The one that is disconnected is a regular telephone.

Accordingly, the subscriber's telephone equipped with the repeat communication function used in the present invention either connects the disconnected receiving circuit again, or transmits electromagnetic waves due to alternating current load fluctuations to the bell circuit to an external speaker circuit. If there is a means to detect and amplify the signal, it is necessary to change the bell circuit itself to one that meets the conditions at the time of adding the broadcast communication function.

According to the present invention, it is possible to obtain an exchange system which has a broadcast communication function, but is separated from the broadcast communication system at the time of outgoing or receiving calls according to the will of the subscriber, and which uses the original telephone exchange connection function.

[Brief explanation of the drawing]

Place O ~ Place N...Subscriber telephone, EX
...Exchanger, 0.1.・・・n、・・・・・・
・Subscriber terminal on the exchange side.

Claims (1)

[Claims] A telephone exchange subscriber line that is supplied with broadcast communication information from one subscriber among an unspecified number of subscribers, and corresponds to the telephone exchange subscriber line and the line. A means for providing high alternating current impedance to the exchange side when receiving broadcast communication information by connecting the subscriber terminals of the telephone exchange, and when the subscriber telephone is connected to the telephone exchange, the subscriber telephone receives broadcast communication information. A means for disconnecting from the system, receives calls from an unspecified number of subscribers to the subscriber terminal corresponding to one subscriber via the exchange, and receives calls from an unspecified number of subscribers through the exchange. 1. A switching system with additional broadcasting function, characterized in that it has means for supplying broadcasting information from a subscriber making a call in the + area to the broadcasting system via the receiving subscriber terminal.