JPS60187143A - Call connection control system of car telephone exchange system - Google Patents

Abstract

PURPOSE:To detect a call even when a car telephone subscriber carries the receiver of a car telephone and leaves the car by making the receiver attachable and detachable. CONSTITUTION:When a general telephone subscriber 5 dials the subscriber number of the car telephone set 1, a radio exchange 3 sends out a call signal 100 through a repeater 32. A radio transmitter and receiver 2 transmits a call code 101 on the basis of the call signal 100. Then the car telephone subscriber when detaching the receiver 10 from the car telephone set 1 and a leaving the car receives the call code 101 not by the car telephone set 1, but the receiver 10 that the car telephone subscriber carries, so the car telephone subscriber knows the call and returns to the car for answering. The car telephone subscriber mounts the receiver 10 on the automatic car telephone set 1 and only dials a special number to send an originating code 103 from the car telephone set 1.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a call connection control method in an automatic call switching system.

(Prior art) In the conventional car telephone exchange system, automatic, 1?11.
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The receiver is fixedly attached to the machine and cannot be used in any way. Therefore, when a call is placed from the wireless switching center to the receiver, the mobile phone subscriber cannot answer unless the mobile phone subscriber is near the automatic JL+, so the wireless switching center identifies that the mobile phone subscriber is absent. Later, a fixed announcement etc. was used to announce that the called party was absent (a method was adopted to notify the 0 party).In other words, in the conventional method, the caller and the automatic J1 Army 11I were called as long as they joined. (Objective of the Invention) The object of the present invention is to enable the receiver of a car telephone to be removed from the receiver, so that the receiver can The object of the present invention is to eliminate the two drawbacks of "bagging" and to provide a control system for a mobile phone switching system that is combined with a so-called paging system.

(Structure of the Invention) According to the present invention, there is provided a call connection control method in a car telephone switching system including a car phone having a detachable receiver, wherein when leaving a car, the receiver can be used to contact a wireless switching system. Call connection control in a car telephone switching system, characterized in that a subscriber who detects a call from a caller returns to the car, loads the receiver, and then dials a special number to automatically connect with the caller. method is obtained.

(Example) Next, the present invention will be explained with reference to the drawings.

The figure is a block diagram showing an embodiment of a call connection control method in a mobile telephone switching system according to the present invention. In the figure, the car telephone switching system consists of a car telephone 1, a radio transmitter/receiver 2, and a radio switching device 3. A car phone 1 includes a detachable receiver 10 and a fixed transmitter 1.
1.

The wireless switching equipment 3t/i also includes, as is generally known, a relay device 32 that interfaces with the wireless transceiver 2, and an announcement trunk 33 that sends out a predetermined announcement.
and an incoming trunk 30 that interfaces with the local exchange 4.
And, entering trunk 30. Relay device 32. It is provided with a network 31- for accommodating an announcement rank 33, and a central control unit 34 connected to the network 31 to perform predetermined communication control.

Next, the operation of this embodiment will be explained using an example of a call connection from a general telephone subscriber 5 to a car telephone 1.

I will clarify.

As is generally known, when a regular telephone subscriber (caller) 5 dials the subscriber number of the automobile N1 handset 1,
The caller 5 is connected to the -C wireless switching device 3 via the local switchboard 4.
connected to. When the wireless switching device 3 receives the subscriber number via the incoming trunk 30, it sends a call to the CC wireless transceiver 2 and the car phone 1 via the relay device 32 under the control of the central control unit 34. A signal 100 is sent out.

Based on the calling signal 1.00, the wireless transceiver 2 issues a calling code 101'! rSend. Here, the car phone subscriber removes the receiver io from the car phone 1 and assumes that he is in a place far away from the car.
Then, the call code 101 is not received, but is received by the receiver IO carried by the mobile phone subscriber, so that the mobile phone subscriber knows that there is a call and returns to the car to answer. On the other hand, in the wireless switching device 3, the response M
When the transmission time of the paging signal 100 times out in iJ, a link A connecting the announce trunk 33 and the incoming trunk 30 is established in the network 31 under the control of the central controller 34, and the caller 5 is connected to the local exchange. 4
．． Entering trunk 30. A predetermined announcement 102 from the announcement trunk 33 is heard via the network 31, for example, ``You are currently receiving a call, so please wait for a while.''

When the car phone subscriber returns to his car, he loads the receiver 1 into the stuffing machine 1 and dials a well-known special number, a calling code 103 is transmitted from the car phone 1. The wireless transceiver 2 sends a calling signal 104 to the wireless switching device 3 based on the calling code 103. The wireless switching device 3 receives the calling signal 104 via the relay device 32.
The central control unit 34 that received the Ai from the car phone 1
Analyzes that a call was made with special number J, releases A, and connects incoming trunk 30 and relay equipment fi &
: Since link B is set to connect 32, caller 5r
Local exchange4. Entering trunk 30. Network 31° Relay device 32. Wireless transceiver 2. It is possible to talk to a car phone subscriber via the car phone 1.

Note that the receiver lO is loaded into the car phone l,
Furthermore, the operation when the mobile telephone subscriber responds before the timing of sending the calling signal 100 times out is exactly the same as that in the conventional system, and therefore the explanation thereof will be omitted.

(Effects of the Invention) As is clear from the above explanation, the call connection control method in the car telephone switching system of the present invention (by which the receiver of the car phone is detachable, and the car phone subscriber has the receiver Even when you are away from your car, you can detect a call, and when you return to your car and call a special number, you are automatically connected to the caller, so the caller only has to wait for the other party to answer, providing an extremely convenient service. The effect is that it is done.

[Brief explanation of the drawing]

The figure is a block diagram showing an embodiment of a call connection control method in a mobile telephone switching system according to the present invention.

Claims (1)

[Claims] A call connection control method in a car telephone switching system comprising a car telephone having a detachable receiver, wherein a subscriber detects a call from a wireless switching center with the receiver brought with him when leaving his car. Call connection control in an automobile 'tjj3:f,i!, switching system, characterized in that the person returns to the automobile, loads the receiver, and then dials a special number to automatically connect with the caller. method.