JP3218497B2 - Linkless Failure History Record Display Method for Cordless Telephone - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for recording and displaying a failure history of link establishment of a cordless telephone.

[0002]

2. Description of the Related Art Conventionally, in a cordless telephone without an LCD display, when a communication path is formed between a master unit and a slave unit,
When the connection of the communication channel failed, only the buzzer sound was used.

[0003]

However, since the cause of the connection failure of the communication path is not clear from the buzzer sound alone, it is not possible to determine whether the cordless telephone is defective or due to an external environment. An object of the present invention is to store at which stage a connection failure occurred when establishing a communication path between a master unit and a slave unit, and to store the connection failure history in a time series as a connection failure history for the slave unit alone. The present invention also provides a method of recording and displaying a failure history of link establishment of a cordless telephone which can classify and grasp a connection failure history at the time of forming a communication path according to the number of times the ringing unit is operated by operating a push button such as a dial button.

[0004]

Means for Solving the Problems To achieve the object of the present invention, the constitution of the present invention is as follows. (1) In a cordless telephone in which a base unit and a base unit are connected via a wireless line, several link establishment stages are performed from the start of the base unit to the completion of the link establishment between the base unit and the base unit via a communication channel. Separate. (2) Each time a link establishment failure occurs between the slave unit and the master unit, the stage at which the link establishment failure occurs is recorded in the storage unit. (3) The number of times of sounding of the sounding unit is assigned in accordance with each of the steps of link establishment. (4) The order recorded each time a link establishment failure occurs corresponds to the push button of the cordless telephone. (5) The history of the stage at which the link establishment failure occurred is displayed by the number of times of the ringing unit. Link establishment failure history record display method for cordless telephone having elements (1) to (5)

[0005]

FIG. 1 is a flow chart and a sequence for recording a failure history of link establishment between a base unit and a slave unit at the time of transmission of a slave unit. FIG. Flow chart and sequence for recording history, FIG. 3
Is a flowchart of reading a link establishment failure history in a slave unit waiting state, and FIG. 4 is a block diagram of a cordless telephone slave unit. 1 is an antenna, 11 is an antenna duplexer, 2 is a transmitting unit, 3 is a receiving unit, 4 is a synthesizer such as a PLL, 5 is a modem, 6 is a storage unit, an EEPROM which is easy to record and erase, and 7 is a dial button. , A power switch, a hold / extension button, etc., 8 a buzzer as a sounding unit, 9 a CPU as a central processing unit,
Is a communication circuit.

First, referring to FIG. 1, a description will be given of a sequence at the time of transmission of a slave unit and a flow of recording a history of failure of link establishment between the master unit and the slave unit at the time of transmission of the slave unit. When the handset performs an outgoing operation (off-hook operation) such as depressing a call button from the standby state, C monitors the wireless sequence at the time of calling the handset.
The PU 9 checks the electric field of the control channel and determines whether the control channel is empty. If the control channel is in the blocked state, it is determined that the link establishment in the first stage has failed.
To record. If the control channel is free, the slave transmits a call signal from the antenna 1 to the master. The master unit that has received the call signal sends a communication channel designation signal to the slave unit.
If the slave unit does not receive the communication channel designation signal during a predetermined period after transmitting the calling signal, the CPU 9 records in the EEPROM 6 that the link establishment in the second stage has failed. Here, when the slave unit receives the communication channel designation signal from the master unit, the CPU 9 controls the synthesizer 4 to shift to the communication channel designated by the master unit and check the electric field of this communication channel. It is determined whether or not the designated communication channel is free. If the communication channel is in the closed state, the failure in link establishment in the third stage is recorded in the EEPROM 6.
If the designated communication channel is free, the slave transmits a communication channel positive signal from the antenna 1 to the master. Upon receiving the speech channel positive signal, the master unit sends a speech circuit ON signal to the slave unit. The slave unit does not receive the communication circuit ON signal within a predetermined period after transmitting the communication channel positive signal, and
U9 reports EEPR as failure of link establishment in the fourth stage.
Record in OM6. When the slave unit receives the call circuit ON signal from the master unit, CPU 9 activates call circuit 10. Further, when dialing is performed after a dial tone arrives at the communication circuit 10 from the master unit connected to the line, the slave unit enters a communication state with a call destination via a telephone line (not shown) via the master unit.

Next, a sequence for recording a sequence at the time of reception of a slave unit and a history of failure in establishing a link between the master unit and the slave unit at the time of reception of the slave unit will be described with reference to FIG. In the standby state of the slave unit, a paging signal for designating a communication channel on the control channel arrives from the master unit. When the handset receives a call signal including a call channel designation from the base unit,
Reference numeral 9 controls the synthesizer 4 to shift to the communication channel designated by the master unit, performs an electric field check on the communication channel, and determines whether the designated communication channel is empty. If the communication channel is in the closed state, the failure in link establishment in the third stage is recorded in the EEPROM 6. If the designated communication channel is free, the slave transmits a communication channel positive signal from the antenna 1 to the master. When receiving the speech channel positive signal, the master unit shifts to the speech channel and sends a ringing signal to the slave unit. The slave unit does not receive a ringing signal during a predetermined period after transmitting the speech channel positive signal, and
Is an EEPROM that failed to establish a link in the fourth stage.
Record in 6. When the off-hook operation is performed after the slave unit receives the ringing signal from the master unit, CPU 9 sends an off-hook signal from antenna 1 to the master unit. Thereafter, the slave unit is in a talking state with a caller via a telephone line (not shown) via the master unit.

Next, reading of the link establishment failure history in the slave unit waiting state will be described with reference to FIG. In the slave unit waiting state, the power switch is turned on while pressing the hold / extension button of the operation unit 7, and then the * button is pressed. After this, when the dial button “1” of the operation unit 7 is pressed, C
The PU 9 reads out from the EEPROM 6 the data indicating at what stage the link establishment failure has occurred last. Now
If the last (latest) link establishment failure is at the second stage, the CPU 9 controls the buzzer 8 to sound "peep" twice. Thus, the slave operator can determine that the last link establishment failure has occurred in the second stage at the number of times of the ringing sound. Next, when the dial button "2" is pressed, the CPU 9 stores data indicating the stage at which the link establishment failure before the latest one occurred.
Read from ROM6. If the link establishment failure before the latest is the one in the fourth stage, the CPU 9
Controls the buzzer and sounds "peep-peep" four times. Thus, the child device operator knows that the link establishment failure before the latest one has occurred in the fourth stage at the number of times of the ringing sound. Next, if "3" of the dial button is pressed, similarly, it is possible to determine at which stage the failure of link establishment before the latest one has occurred based on the number of times the buzzer sounds. Thereafter, by pressing the dial button in the same manner, the history of the failure in establishing the link between the slave unit and the master unit can be determined from the number of times the buzzer sounds. When the buzzer does not sound, it means that there was no failure (recording). To end the reading, the hold / extension button may be depressed. If no operation is performed for 30 seconds, the operation is terminated and the child device returns to the standby state.

The method of erasing the data in the EEPROM 6 is to turn on the power switch while holding down the hold / extension button of the operation unit 7 in the slave unit standby state, and then press the * button. Further, the catch button and the hold / extension button on the operation unit 7 may be sequentially pressed.

As an example, only ten records may be recorded, and when the number of records exceeds ten, the oldest data may be deleted.
The present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the claims.

[0011]

As described above, according to the method of recording and displaying the history of link establishment failure of a cordless telephone according to the present invention, at what stage of link establishment failure and at what rate during link maintenance the maintenance was performed during maintenance. Can be determined in a time-series manner by the number of times the buzzer sounds, so that the failure can be tracked after the occurrence of the failure, and the failure can be easily found.

[Brief description of the drawings]

FIG. 1 is a flowchart and sequence for recording a history of failure in establishing a link between a base unit and a slave unit at the time of transmission from the slave unit

FIG. 2 is a flowchart and a sequence for recording a failure history of link establishment between a master unit and a slave unit during reception of the slave unit.

FIG. 3 is a flowchart of reading a link establishment failure history in a slave unit waiting state.

FIG. 4 is a block diagram of a cordless telephone handset.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Antenna 11 Antenna duplexer 2 Transmitting part 3 Receiving part 4 Synthesizer 5 Modem 6 EEPROM 7 Operation part 8 Buzzer 9 CPU 10 Communication circuit

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yoshinari Nemoto 1-6, Uchisaiwai-cho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation Examiner Satoshi Sato (56) References JP-A-63-224418 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) H04B ⁷ /24-7/26 H04M 1/725 H04B 17/00-17/02 H04Q 7/00-7/38

Claims (1)

(57) [Claims] In a method for displaying a link history of a cordless telephone in which a base unit and a base unit are connected by a wireless line, a link between the base unit and the base unit is established through a communication channel from the start of the base unit. Is divided into several link establishment stages, and whenever a link establishment failure occurs between the slave unit and the master unit, the stage at which the link establishment failure occurs is recorded in the storage unit, and several link establishment stages are performed. In addition to assigning the number of ringing of the ringing unit corresponding to each of the stages,
By associating the recorded order with the push button of the cordless telephone every time a link establishment failure occurs, a history of the stage at which the link establishment failure occurred is displayed by the number of ringing of the ringing unit. History display method of link establishment failure of cordless telephone