JPH02166872A - Camp-on system - Google Patents

Abstract

PURPOSE:To connect a calling subscriber and a called subscriber and to attain the call between the calling subscriber and the called subscriber when the called subscriber returns by providing a storing means for subscriber information about both the called and calling subscribers, etc., and requesting a camp-on service even when no response is obtained since the the called subscriber is out, etc. CONSTITUTION:When a subscriber 1 calls a subscriber 2 and executes a hooking operation in order to request the camp-on service in the case of the absence of the subscriber 2, a central processing unit 11 detects this and connects the subscriber 1 and a call originating register 8. Next, the subscriber 1 dials a special number, the register 8 transfers this number to the unit 11, and the unit 11 analyzes the transferred number. When it is decided that the number indicates the camp-on service according to the analyzed result, the unit 11 combines the information about the subscriber 1 and the information about the subscriber 2 stored in the register 8 and writes the combined information in a memory 12. Further, when the subscriber 2 returns to his/her seat, executes an off-hook operation, and after that executes an on-hook operation, the unit 11 compares the storage contents of the memory 12 with the subscriber information about the subscriber 2 and camp-on connects the subscribers 1 and 2 when the compared result is coincidence. Thus, the call can be easily attained without necessitating the calling subscriber to the call the called subscriber again several times.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a camp-on system, and more particularly to a camp-on system when a called subscriber does not answer.

[Conventional technology]

In the conventional camp-on method, when the calling subscriber encounters the busy state of the called subscriber and performs a hooking operation and dials a special number, the communication between the called subscriber and the calling subscriber is established. Subscriber information is stored in a storage device. Thereafter, when the control device detects an on-hook operation due to the called party ending the call, the control device establishes a connection between the called party and the calling party based on the subscriber information stored in the storage device. , it was possible to communicate by calling both parties.

[Problem to be solved by the invention]

The conventional camp-on method described above can provide service only when the called subscriber is busy, and if the called subscriber is away or does not respond, the calling subscriber will not be able to receive a response. Even though it is in a state where calls cannot be made like in the medium state, no service can be provided, and the calling subscriber has no means to complete the call other than re-calling connection.

The purpose of the present invention is to request service even when the called subscriber does not respond due to going out or away from the desk, so that the exchange knows that the called subscriber has returned, and the communication between the two The aim is to provide a camp-on method that allows users to connect and make calls.

[Means to solve the problem]

In the camp-on system of the present invention, an exchange accommodating a plurality of subscribers receives a hooking operation from a calling subscriber who has encountered non-response from the called subscriber and a special number dialed after that. a storage means for storing subscriber information of the called subscriber and the calling subscriber; a detection means for detecting an on-hook operation subsequent to an off-hook operation of the called subscriber; and a storage means for receiving the on-hook operation detected by the detection means. and control means for controlling the connection between the called subscriber and the calling subscriber based on the subscriber information stored in the subscriber information.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of the present invention.

Subscribers 1 and 2 are accommodated in exchange 3 and connected to subscriber circuits 4 and 5, respectively. The subscriber circuits 4 and 5 can be connected via the main switch 6 to a call trunk 7 used when making calls between subscribers, and to a calling register 8 that receives subscriber dials. A tone oscillator 9.10 is connected to the subscriber circuit 4.5.

The central control device 11 controls each device of the exchange 3. The storage device 12 stores information necessary for controlling the central control device 11 and includes a camp-on memory for storing subscriber information for the camp-on service.

FIG. 2 is a pattern diagram of a camp-on memory according to an eleventh embodiment of the present invention.

calling subscriber information and called subscriber information are stored in pairs;
be done.

Next, the operation will be explained.

The following description assumes that subscriber 1 is the calling subscriber and subscriber 2 is the called subscriber.

FIG. 3 is a state transition diagram of call connection.

The state in which subscriber 1 makes a call and calls subscriber 2 is shown in the third
If subscriber 2 responds, the connection shown by the solid line changes to the connection shown by the broken line, and subscribers 1 and 2 can talk, as shown in Figure (a). However, if subscriber 2 is absent, the call continues indefinitely without responding. Subscriber 1 determines that subscriber 2 is absent in this state and performs a hooking operation to request camp-on service. When the central control unit 11 of exchange 3 detects hooking, it activates tone transmitter 9, 10 and the call trunk 7 previously selected for connection between the subscribers 1 and 2 is opened, and the subscriber 1 is connected to the calling register 8 as shown in FIG. 3(b). At this time, the central control unit 11 temporarily stores the subscriber information of the subscriber 2 in the calling register 8. When the subscriber 1 is connected to the calling register 8, the subscriber 1 dials a special number requesting camp-on service. do. The outgoing register 8 that has received the special number forwards this special number to the central control unit 11 . The central controller 11 analyzes this special number and
When it learns that the request is for Camp-on service, it combines the subscriber information of subscriber 1 with the subscriber information of subscriber 2 temporarily stored in the calling register 8 and sends the Camp-on service that is included in the storage device 12. Write to memory.

While this state continues, subscriber 2 returns from going out or away from his/her desk and performs an off-hook operation for the purpose of making a call.
When the on-hook operation is performed, the central controller 11 detects the on-hook operation of the subscriber 2 and stores 1 in the camp on memory.
If subscriber information has been written in the camp-on memory, the called subscriber information stored in the camp-on memory and subscriber 2
to find a match. If there is matching called subscriber information, camp-on service is being requested, so the set of the calling subscriber information and called subscriber information is read and a camp-on connection is made. The connection state is the same as in FIG. 3 (a>), but in this case subscriber 2 responds and the call can be completed.

The present invention is configured to detect that the called party has returned from going out or being away from the desk by performing an on-hook operation after performing an off-hook operation for the purpose of making a call.
If the called party does not perform the off-hook operation, the on-hook operation will not be performed and camp-on service cannot be performed. However, if the called party goes out for operational reasons or returns from being away, be sure to perform the off-hook/on-hook operation. There is no particular problem if it is decided to do so.

〔Effect of the invention〕

As explained above, the present invention allows the exchange to know that the called subscriber has returned by requesting service even when the called subscriber does not respond due to going out or leaving the desk. , and enables communication between the two parties, which has the effect of eliminating the need for the calling subscriber to dial the phone again and again.

The turn diagram, FIG. 3, is a state transition diagram of call connection.

1.2...subscriber, 3...exchange, 4
．． 5...Subscriber circuit, 6...Main switch, 7...Telephone trunk, 8...Outgoing register, 9.10... Tone oscillator, 11.
...Central control unit, 12...Storage device.

Agent Patent Attorney Susumu Uchihara

[Brief explanation of the drawing]

Claims (1)

[Claims] An exchange accommodating a plurality of subscribers receives a hooking operation from a calling subscriber that encounters non-response from the called subscriber and a special number dialed after that, and connects the called subscriber and the calling subscriber. storage means for storing subscriber information of the called subscriber; detection means for detecting an on-hook operation subsequent to an off-hook operation of the called subscriber; and a subscriber whose on-hook operation is detected by the detection means and stored in the storage means. A camp-on system characterized in that it comprises control means for controlling the connection between the called subscriber and the calling subscriber based on information.