JPS61212950A - Incoming system with highest priority - Google Patents

Abstract

PURPOSE:To attain the connection of a telephone call on emergency by applying interruption connection forcibly after incoming display when a registered subscriber makes a telephone call while the registered subscriber is in talking. CONSTITUTION:When a phone call comes from a subscriber A to a subscriber B, whether or not the subscriber B is busy is discriminated. When the subscriber B is busy, whether or not the subscriber B is a registered personnel is discriminated. When the subscriber B is a registered personnel, whether or not the subscriber A is the registered personnel is discriminated. When the subscriber A is a registered personnel, whether or not interruption is attained is discriminated. When interruption is enabled, the main connection is applied. In applying main connection, the incoming call is noticed to the subscriber B in advance in speech synthesis, the first talking is finished forcibly after a prescribed time to apply interruption. Even when the subscriber is busy, the emergency call is connected.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to subscriber services for telephone exchanges.

[Conventional technology]

BACKGROUND ART Hitherto, a system called a hotline, which connects only special subscribers and provides subscriber services, has been known.

[Problem that the invention seeks to solve]

An object of the present invention is to provide general subscribers with a top-priority call receiving system with a hotline-like function.

[Means for solving problems]

The present invention is a system that connects the telephone of an urgent and important customer, family member, relative, etc. during a call, and unlike conventional call waiting devices, it connects the telephone of a first subscriber and a second subscriber who is on a call. When a third subscriber dials, if the second and third subscribers are registered in advance, the second subscriber is notified of the incoming call by voice synthesis or announcement, and then the first The telephone call between the subscriber and the second subscriber is forcibly terminated after a predetermined period of time has elapsed, and the second subscriber and the third subscriber are connected and put into a telephone conversation state.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a flow chart showing an embodiment of the highest priority incoming call method of the present invention.

When subscriber A makes a call to subscriber B (processing 1), it is determined whether subscriber B is on the phone (processing 2), and if subscriber B is not on the phone, a general telephone connection is made (processing 3). On the phone (
If subscriber C), it is determined whether subscriber B is a subscriber of this service (the highest priority incoming call service) (processing 4), and if subscriber B is not a subscriber of this service, subscriber B is subscribed to another service. It is determined whether the subscriber is a subscriber to another service (processing 5), and if the subscriber is a subscriber to another service, the connection is made to another subscriber's service (processing 6), and if the subscriber is not a subscriber to another service, a busy tone is returned (processing 7). )
. If subscriber B is a subscriber of this service in process 4, it is determined whether subscriber A is a subscriber of this service (process 8),
If you are not a subscriber to this service, a busy tone will be returned (processing 7).
), if the subscriber is a subscriber to this service, it is determined whether or not interrupt connection is possible (process 9), and if interrupt connection is possible, voice synthesis or announcement is made to subscriber B for this service as shown in Figure 2. Listen to “Denwawo Kirimasho”
After about 10 seconds, the call between subscriber C and subscriber 3 is forcibly terminated, and subscribers A and B are connected (process 14).
, if interrupt connection is not possible, it is determined whether or not a test connection is in progress (processing 10), and if a test connection is in progress, the process returns to process 9 after receiving an instruction to abort the test (processing ta), and if a test connection is not in progress, a connection is made (Process 12).

Note that the above control is performed by the central control device of the exchange.

Figures 3 and 4 are relay system diagrams showing connections between subscribers A, B, and C, where subscriber A connects to central office line trunk ICT and subscriber C
is connected to the office line trunk OCT, and as a means for making subscriber B hear "Denwa wo ki tech dasai", a voice synthesizer TNG in FIG. 3 and an announcement machine ANS in FIG. 4 are provided.

In this embodiment, the number of lines on which incoming calls can be received with the highest priority is three lines per subscriber (the memory capacity increases as the number of lines increases), and these three lines are also given priorities.

FIG. 5 (1) to (6) are subscriber A in this embodiment,
It is a transition diagram showing the connection state of B and C.

The figure (1) shows the connection status within the own station, and the figure (2) shows the subscriber A.
(3) and (4) are connections within the same station, (5) is a state where subscriber A is connected,
FIG. 6(6) shows a state in which subscriber C is reconnected.

Only general subscribers can register for this service.

Please note that other services are not allowed while this service is in progress. Applicable calls include calls within the local office, calls within the local office, calls to long distances, and international calls.

〔Effect of the invention〕

As explained above, the present invention enables emergency calls from customers, family members, relatives, etc. to be made even during a call by forcibly ending the call of a subscriber who is currently on the phone and allowing the subscriber to receive a call from a third party. can be connected.

[Brief explanation of drawings]

FIG. 1 is a flowchart showing an embodiment of the highest priority incoming call system of the present invention, FIGS. 2 and 3 are diagrams showing an embodiment of the relay system of the highest priority incoming call system of the present invention, and FIG. A diagram showing the voice output from the voice synthesis TNG in the figure or the announcement machine ANS in FIG. 3, and FIG. 5 is a transition diagram of the connection state. OGT: Office line output trunk, TCT: Office line personnel trunk, Engineering NG: Voice synthesizer, ANS: Announcement machine, A, B, C: Subscriber.

Claims (1)

[Claims] When a third subscriber dials a second subscriber who is on a call with a first subscriber, if the second and third subscribers are pre-registered subscribers, the second subscriber After displaying an incoming call by voice synthesis or announcement, the call between the first subscriber and the second subscriber is forcibly terminated after a predetermined period of time has elapsed, and the call between the second subscriber and the third subscriber is terminated. The highest priority incoming call method that connects and enters a call state.