JPH0813066B2 - switch - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to an economical and highly practical exchange capable of registering a large number of message weights.

[Technical background of the invention and its problems]

Recently, a message waiting service in a telephone exchange system has attracted attention. This message waiting service, when the called (incoming) telephone is busy or does not answer, sets and registers in the exchange that there is a message to the called telephone by key, flash, or dial operation from the calling telephone. In accordance with the registered message waiting information, the exchange makes a call to the called telephone set, for example, every time a certain period of time elapses from the time of registration to notify that there is a message. This kind of service
In some cases, the operator of the exchange performs message waiting registration for each telephone and calls the registered telephones all together.

However, in order to call multiple telephones registered in this way at the same time, a large number of tone trunks were required in the exchange. Moreover, the capacity of the calling sound source is increased, which is extremely uneconomical in terms of system configuration. For this reason, in the past, various measures have been taken, such as limiting the number of message waitings that can be registered.

[Object of the Invention]

The present invention has been made in consideration of such circumstances.
It is an object of the present invention to provide a highly efficient and highly practical exchange capable of registering a large number of message weights.

[Structure of Invention]

The present invention registers information of message waiting from a calling telephone to the called telephone when the called telephone is busy or does not respond, and thereafter calls the registered called telephone at a predetermined timing. According to the message waiting information from the calling telephone, the memory for registering the information indicating the called telephone and the message waiting information from the calling telephone in the exchange for notifying the existence of the message waiting information by Means for sequentially registering the information indicating the called telephone to notify the presence of the message waiting information from the top address of the memory, and reading the information registered in the memory, and corresponding information based on the information. Starts calling the calling telephone and stops calling after a certain period of time has passed or when the called telephone answers. Is performed for all registered called telephones one by one from the called telephones registered at the head address of the memory in the order of registration, and this set of operations is repeatedly executed at regular time intervals. And, when a response is obtained from the called telephone in the calling, information indicating the called telephone that has obtained the response is deregistered from the memory, and the registration is deregistered in the memory. It is characterized by further comprising means for sequentially advancing registered addresses of information registered after the registered address of information.

[Effect of the invention] Thus, according to the present invention, since a plurality of telephones registered for message waiting are sequentially called one by one,
It is not necessary to prepare many tone trunks, and the capacity of the calling sound source is not increased. Further, since it is only necessary to control the sequential calling of the above-mentioned telephones by the counter or the like which manages the registration of the message waiting, it is possible to greatly simplify the configuration of the exchange system, and it is extremely economical and practical. The effect that becomes. And if possible, register many message weights.

Example of Invention

An embodiment of the method of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic configuration diagram of a telephone exchange system to which the embodiment system is applied, and T ₀ , T _{1 to} Tn are telephone terminals. These telephone terminals include an ordinary telephone, a multi-functional telephone such as a so-called key telephone, an operator desk (relay stand), and the like. These telephone terminals T ₀ , T _{1 to} Tn are line circuits LC _{0 to} LCn of the exchange.
Respectively connected to. The switch circuit SW performs exchange connection between the line circuits LC _{0 to} LCn, the trunk circuits TRK _{0 to} TRKm, and the transmission registers OR _{0 to} ORl. Then, the switching connection by the switch circuit SW, the terminal call by the tone ringer RG, and the like are controlled by the central control device CC, respectively. The memory MRY stores the control program of the central controller CC, exchange data, and the like. Further, the counters CONT ₁ and CONT ₂ provided inside the central control unit CC are for controlling the terminal call for notifying the message waiting described later, and the counter CONT ₁ contains call synchronization information and the counter CONT ₂
Stores information on the calling time for one telephone terminal.

In the system configured as described above, it is assumed that the terminal that provides the message waiting service is the relay station T ₀ . At this time, it is assumed that there is an incoming call from the trunk line TRK ₀ , for example, and when the operator answers the call and tries to transfer the call to the telephone set T ₁ , the telephone set T ₁ does not answer. At this time, the The attendant is in response to a request from the office line partner, will register a message waiting for phone T ₁ by a key operation. As a result, as shown in FIG. 2A, the message waiting information T ₁ is registered at address 0 of the message waiting memory. Thereafter, when a message waiting request is issued to the telephone set Tn in the same manner, the information is registered in the address 1. FIG. 2 (b) shows a state of the memory when a message waiting for the telephone set Ti newly occurs thereafter. That is, each time a message waiting request is given, the information (information specifying the called telephone) is sequentially registered in the message waiting memory. Incidentally, when a response from the telephone set is obtained in response to a message waiting notice described later and the intended message is transmitted by this, the registered message waiting information is promptly deleted from the memory.
In this case, the registration addresses of the message waiting information registered after the registration address of the deregistered message waiting may be sequentially advanced.

According to the message waiting information registered in this way, the central control device CC gives a message waiting notification as follows.

That is, the central control device CC activates the notification program at regular time intervals according to the information indicated by the counter CONT ₁ , and calls the telephones registered for message weighting in the memory in sequence for a predetermined time in accordance with the registration order. It has become a thing. The fixed ringing time for this telephone is controlled by the information set in the counter CONT ₂ . That is, as shown in FIG. 3, the telephone set registered for message waiting is called for a fixed period of time “a” in order according to the registration order of the memory for each fixed calling period “c”, whereby notification of message waiting is given. Has become.

FIG. 4 dies the processing procedure of the notification program for performing such notification control. Then, by starting the program, the information X of the memory access address is initialized to "0", and it is checked whether or not there is a message waiting registration at the address X. Then, when there is registered message waiting, the telephone is called for a certain period of time. After that, the next address is set, and the above-described processing is repeatedly executed. As a result, the telephones registered in the memory are sequentially called for a certain period of time, and the message waiting is notified. Then, such message waiting notification control is performed at regular intervals c.

As described above, according to this method, the telephones are sequentially called, so that the number of tone trunks and the sound source capacity are not increased. Also, the number of message waitings registered is not limited. Moreover, since the calls are distributed, it is possible to reduce the load on the central control unit CC and provide an effective service.

The present invention is not limited to the above embodiment,
It goes without saying that various modifications can be made without departing from the spirit of the invention.

[Brief description of drawings]

FIG. 1 is a view for explaining an embodiment method of the present invention.
FIG. 4 is a schematic configuration diagram of a telephone exchange system, FIG. 2 is a diagram showing a state of a message waiting memory, FIG. 3 is a diagram showing a concept of telephone calling, and FIG. 4 is a diagram showing a processing procedure of a notification program. T ₀ , T _{1 to} Tn …… telephone terminal (telephone), LC _{0 to} LCn …… line circuit, TRK _{0 to} TRKm …… trunk circuit, OR _{0 to} ORl …… transmission register, SW …… switch circuit, RG… … Tone Ringer, CC …… Central control unit, MRY …… Memory, CONT ₁ , CONT ₂
……counter.

Claims (1)

[Claims] 1. A method for registering message waiting information from a calling telephone to the called telephone when the called telephone is busy or not responding, and then calls the registered called telephone at a predetermined timing. In the exchange for notifying the existence of the message waiting information, a memory for registering the information indicating the called telephone, the message waiting information from the calling telephone, the calling telephone, and the like. Means for sequentially registering the information indicating the called telephone to notify the presence of the message waiting information, and reading the information registered in the memory, and applying the information based on the information. Start calling the called telephone and stop calling after a certain period of time or when the called telephone answers. A series of operations is performed one by one from the called telephones registered at the top address of the memory to all registered called telephones in the order of registration, and this set of operations is repeatedly executed at regular time intervals. When a response is obtained from the called telephone in the calling, the information indicating the called telephone for which the response is obtained is deregistered from the memory, and the registration is deregistered in the memory. An exchange that is provided with a means for sequentially advancing the registration addresses of the information registered after the registration address of the information.