JPS60178764A - Absent incoming processing system - Google Patents

Abstract

PURPOSE:To enable a subscriber who gave a call to another absent subscriber to have a conversation with said absent subscriber with no recalling, by displaying the under-absence incoming to a telephone received the incoming call during absence of the relevant subscriber and making the call of the calling subscriber with a prescribed operation of the called subscriber possible. CONSTITUTION:When no answer is received from a called subscriber B, a calling subscriber A operates a function button K1 of a multi-function telephone MTa to transmit a register signal via a signal line. The register signal is transmitted to a controller MPR', and the MPR' starts an absence incoming register mechanism ACR to store a telephone number Na to an incoming subscriber number register part Ab corresponding to the subscriber B of a main memory MM'. At the same time, an absence incoming display signal is sent to a multi-function telephone MTb of the subscriber B to turn on an absence incoming pilot lamp L1. Then a call request signal is transmitted when the subscriber B operates a function button K2, and the controller MPR' starts an absence incoming call mechanism ACC. The mechanism ACC extracts the number Na and transmits a call signal to the telephone MTa of the subscriber A.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to an automatic switching system, and more particularly to a missed call handling method that allows calls that arrive while the called party is away to be connected with a simple operation.

[b) Technical background As part of improving the serviceability of automatic exchanges, it is desired that a caller who makes a call to an absent telephone will be able to talk to the called party without having to repeat the call. . On the other hand, with the diversification of the functions of telephones housed in automatic exchanges, each telephone is connected to the automatic exchange through a call line and a signal line, making it possible to transmit various types of control signals independently of call signals via the signal line. Multi-function telephones are increasingly being used.

(C) Prior Art and Problems FIG. 1 is a diagram showing an example of a conventional missed call processing method. In FIG. 1, a response delay transfer mechanism DC3 is provided in a management control device MPH that controls connections between automatic exchanges. The response delay transfer mechanism DC3 automatically transfers the incoming call to another pre-registered subscriber when a call arrives at a subscriber who has been given the response delay transfer function and the calling state has elapsed for a predetermined period of time. Transfer to. It is assumed that all subscribers A are provided with a response delay transfer function and that subscriber B is registered in advance as a transfer destination subscriber. That is, a transfer subscriber number registration unit (for example, Sa) corresponding to each subscriber (for example, A) to which the response delay transfer function is provided in the main memory device MM.
is the telephone number (for example, N) of the transferred subscriber (for example, B).
b) is stored. In FIG. 1, when subscriber C calls subscriber A, the management control bag WMPR identifies that subscriber A is provided with the response delay transfer function, and calls subscriber B for a predetermined period of time. A ringing signal is sent to telephone Tb, and a ringing tone is sent back to telephone Tc corresponding to subscriber C from ringing tone sending circuit RBT. When a predetermined period of time has elapsed in this state, the central controller CC activates the response delay transfer mechanism DCS. The response delay transfer mechanism DO3 stores the main memory MM corresponding to the calling subscriber A.
Extracts the telephone number Nb stored in the transfer subscriber number registration section Sa in the mobile station, starts sending a calling signal to the telephone Tb,
The sending of the ringing signal to the telephone Ta is stopped.

As is clear from the above explanation, in the conventional missed call processing method, if subscriber A, who has been given a response delay transfer function in advance, receives a call while he is absent, the call is sent after a predetermined period of time. , automatically pre-registered subscriber B
Transfer incoming calls to.

However, if subscriber B is busy or absent at the time the incoming call is transferred, subscriber C has to call subscriber A again.

(d) Object of the Invention The object of the present invention is to eliminate the disadvantages of the conventional missed call handling methods as described above, and to enable a caller who has called an absent subscriber to make a new call under any circumstances. The object of the present invention is to realize a means for making it possible to communicate with a called subscriber without any modification.

(e) Structure of the Invention The object of the present invention is to provide an automatic switching system that accommodates a telephone equipped with a telephone line and a signal line independently, in which a calling telephone that is calling a called party sends out a registration signal via the signal line. registers the identification axis of the calling telephone, transmits an incoming call display signal to the called telephone via the signal line to display the missed call, and displays the missed call while the missed call is displayed. This is accomplished by ringing the registered calling telephone when the telephone transmits a calling request signal via the signal line.

That is, according to the present invention, a missed call is displayed on the telephone that received the call while the subscriber was absent, and when the called party notices the display and performs a predetermined operation, the calling subscriber is called.

(fl　Embodiments of the invention An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is a diagram showing a missed call processing method according to an embodiment of the present invention. Note that the same reference numerals indicate the same objects throughout the figures. In FIG. 2, multifunction telephones MTa and MTb are provided corresponding to subscribers A and B accommodated in the automatic exchange. Each multifunction telephone MT is provided with a function button 1 operated when sending a registration signal, a function button 2 operated when sending a call request signal, and a missed call indicator lamp L1. and are respectively connected to the corresponding subscriber circuit LC" by a telephone line and a signal line. Also, in the management control device MPR',
Missed call registration mechanism ACR and missed call calling mechanism ACC
A called subscriber number registration section Ab is provided in the main memory device MM' corresponding to each subscriber. In FIG. 2, when subscriber A calls subscriber B,
A calling signal is transmitted from the subscriber circuit LC to the multifunction telephone MTb via a signal line, and the multifunction telephone MTa
The ringing tone is returned from the ringing tone sending circuit RBT. If subscriber B does not respond in such a state, subscriber A determines that subscriber B is absent and calls multifunction telephone MT.
Press 1 on the function button a. The multifunction telephone MTa, whose function button is pressed to 1, sends out a registration signal via the signal line. The registration signal is transmitted to the management control device MPR' via the subscriber circuit LC" corresponding to subscriber A and the subscriber control device LPR'. The management control device MPR', which has received the registration signal, recognizes the missed call. activating the registration mechanism ACR; the missed call registration mechanism ACR identifies that subscriber A, who is calling subscriber B, requests registration of missed calls;
The telephone number Na is stored in the called subscriber number registration section Ab corresponding to subscriber B in the main memory bag WMM, and the subscriber control device LPR corresponding to subscriber B and subscriber circuit LC are stored.
9 and the signal line, the missed call display signal is transmitted to the multi-function telephone MTb, and further the registration acceptance tone sending circuit SVT
, the multi-function telephone MTa returns a registration acceptance tone. The multifunction telephone MTb, which has received the missed call display signal, lights the missed call display lamp L1. Subscriber A, who has heard the registration acceptance tone, restores the call to subscriber B. When subscriber B returns in this state and notices that the missed call indicator lamp Ll on the multifunction telephone MTb is lit, he presses the function button 2. The multi-function telephone MTb, whose function button is pressed to 2, sends out a call request signal via the signal line. The call request signal is transmitted to the management control device MPR via the subscriber circuit LC corresponding to subscriber B and the subscriber control device LPR'. The management control device MPR, which has received the call request signal, activates the missed call calling mechanism ACC. death,
The telephone number Na is extracted from the called subscriber number registration section Ab corresponding to subscriber B in the main memory MM", and the subscriber control device LPR°, subscriber circuit LC' and signal line corresponding to subscriber A are A ringing signal is transmitted to the multifunction telephone MTa via the mobile terminal, causing the missed call indicator lamp L1 to flash, and the multifunction telephone MTb is caused to return a ring tone from the ring tone sending circuit RBT.When subscriber A answers, the management Control device MPR°
connects multifunction telephones MTa and MTb by a known method. As a result, subscriber A can talk to subscriber B who has returned.

As is clear from the above explanation, according to this embodiment, the calling party A who has determined that the called party B is absent uses the multi-function telephone MTa.
By operating the function button 1, the missed call display lamp Ll lights up on the multifunction telephone MTb, and the called subscriber number registration section Ab corresponding to the called party B in the main memory bag WMM" lights up. The telephone number Na to the calling party is registered.In this state, when the called party B notices that the missed call indicator lamp L1 is lit and presses the function button 2, the calling party A is called, and the called party B is called. It is possible to talk to.

Note that FIG. 2 is only one embodiment of the present invention; for example, function button 2 is not limited to being provided separately from function button 1, and it is also possible to use the same function button. However, even in such a case, the effects of the present invention do not change. Further, the calling party and the called party are not limited to subscribers A and B, respectively, and many other modifications may be considered, but the effects of the present invention do not change in any case. Furthermore, it goes without saying that the configuration of the automatic exchange is not limited to that shown in the drawings.

(gl) Effects of the Invention According to the present invention, in the automatic exchange, a caller who has made a call to an absent subscriber can contact the called subscriber without making a new call under any circumstances. It becomes possible to make calls, and the serviceability of the automatic exchange is improved.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an example of a conventional missed call processing method, and FIG. 2 is a diagram showing a missed call processing method according to an embodiment of the present invention. In the figure, A, B and C are subscribers, Ab is a called subscriber number registration unit, ACC is a missed call calling mechanism, ACR is a missed call registration mechanism, DO3 is a response delay transfer mechanism, and K1 and 2 are function buttons. , Ll is the missed call indicator lamp, L
C and LC' are subscriber circuits, LPR and LPR" are subscriber control units, MM and MM" are main storage units, and MP
R and MPR' are management control devices, MTa and M, T
b is a multifunction telephone, Na and Nb are telephone numbers, NW is a network, RBT is a ringing tone transmission circuit, Sa is a transfer subscriber number registration section, SVT is a registration acceptance tone transmission circuit, and Ta and Tb are telephones.

Claims (1)

[Claims] In an automatic exchange that accommodates a telephone equipped with a telephone line and a signal line independently, when the calling telephone that is calling the called party sends a registration signal via the signal line, the identification information of the calling telephone and transmits an incoming call display signal to the called telephone via the signal line to display a missed call, and the telephone displaying the missed call makes a call via the signal line. A missed call processing method characterized in that the registered calling telephone is called when a call request signal is sent from the person.