JPH03201731A - Dialing method for automobile telephone set - Google Patents

Abstract

PURPOSE:To evade troublesome operation by making a call from an automobile telephone set to an opposite subscriber, and making an automatic dialing of the telephone number of the opposite subscriber during talking when the talking is terminated not by the operation of the station now in use. CONSTITUTION:When an automobile telephone set dials the telephone number of an opposite subscriber and is in a talking state with a reply by the opposite subscriber, and the talking is terminated not by the operation of the station in use but due to the state of a radio wave, then a talking display OFF and a busy tone ON from a radio equipment are received when the termination takes place, and when the station in use makes no termination operation for, e.g. 2sec, a termination data is sent, then starting the data, a dial data of the telephone number of the opposite subscriber and a dial end data are sent automatically and sequentially again to enter the talking again. Thus, even when the halfway talking with the opposite subscriber is terminated depending on the state of a radio wave, redialing is made automatically to the opposite subscriber and the troublesome operation is eliminated.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a method for making a call from a car telephone.

2. Description of the Related Art Recently, automobile telephones have become popular, and these automobile telephones communicate with other subscribers using radio waves via base stations.

Problems to be Solved by the Invention As mentioned above, car phones use wireless communication to make calls, so if a car is driving in a shielded space such as a valley between high-rise buildings, it may Depending on the condition of the radio waves, the call may end suddenly, regardless of the operation of the station. In such a case, the user has to dial the telephone number of the subscriber with whom the call is being made, which is troublesome.

The present invention solves these conventional problems.If a call is terminated due to radio wave conditions, etc., regardless of the operation of the own station, the call state is automatically resumed after a short interruption. It is an object of the present invention to provide a method for making a call using a car telephone, which can be used to make a call from a car and eliminate the troublesome operation.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention makes a call from a car phone to a subscriber at the other end, and when the call is terminated without any operation on the own station, the above-mentioned The system automatically makes a call again using the telephone number of the other party.

Therefore, according to the present invention, even if a call is terminated midway through with the other subscriber due to radio wave conditions, the call is automatically re-transmitted to the other subscriber, and the call can be resumed after a short interruption. It is possible to continue.

EXAMPLES Hereinafter, examples of the present invention will be described with reference to the drawings.

The figure is a flowchart showing a method for making a call from a car telephone according to an embodiment of the present invention.

The calling method according to the present invention can be executed by changing the program in the CPU of a conventional car phone device itself without changing it. Only the calling method will be explained with reference to the flowchart.

Assume that when a call is made by dialing the telephone number of the other subscriber from a car phone and the call is in a state of communication due to the answer from the other subscriber, the call is terminated due to the state of the radio waves, regardless of the operation of the own station. Due to the end of this call, the call display is off from the radio.
F. When the busy tone ON is received, step 1), for example, if the end operation of the own station is not performed within 2 seconds (step 2.3), the end data is sent out. step 4), and then the start data, In step 5), the dialing data of the telephone number of the other subscriber and the dialing completion data are automatically retransmitted in sequence, and the call is started again. On the other hand, if there is no need to make a re-transmission, and in step 2.3 above, the end operation of the own station is performed by pressing the end key or on-hook within 2 seconds, the end data will be sent.In step 6), the state will shift to the standby state. do.

Incidentally, if the wireless device does not immediately accept the start data in step 5 after receiving the end data in step 4, a timer may be used to set an appropriate time between steps 4 and 5.

Effects of the Invention As described above, according to the present invention, even if a call is terminated midway through with the other subscriber due to radio wave conditions, the call is automatically re-transmitted to the other subscriber, and the call is terminated in a short period of time. Since it is possible to continue the call again after a temporary interruption, the troublesome operation can be eliminated.

[Brief explanation of drawings]

The figure is a flowchart showing a method for making a call from a car telephone according to an embodiment of the present invention.

Claims (1)

[Claims] A feature of this system is that when a call is made to the other subscriber from a car phone and the call is ended without any operation on the own station, the call is automatically made again using the phone number of the other subscriber. How to make a car phone call.