JPH04208743A - Cordless telephone system - Google Patents

Abstract

PURPOSE:To prevent an operator from meaninglessly waiting for the response of a cordless telephone set by displaying information, which indicates that the response to a call cannot be detected, in the case that the response to the call cannot be detected at the time of calling the cordless telephone set. CONSTITUTION:When a master telephone set 14 is busy and a transfer key of a key pad 18 is inputted, a speech control part 17 requests a radio control part 16 to call a slave telephone set. If the radio control part 16 fails in transfer, that is, if a radio line to a slave telephone set 119 cannot be connected by preliminarily determined radio procedures or carrier-off of the slave telephone set 119 is detected by a radio processing circuit 112, information indicating that the slave telephone set cannot be called to fail in transfer is displayed on a display device 19. The user is informed that it is forecasted that power-off of the slave telephone set is one cause of the failure in transfer.

Description

[Detailed description of the invention]

[00011

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless telephone system capable of calling a cordless telephone. BACKGROUND OF THE INVENTION It has been possible to transfer an active call from an extension or outside line connected to a conventional private branch exchange or key telephone to a cordless telephone. [0003] Also, it was possible to transfer data from the base unit of the cordless phone to the cordless phone, which is the slave unit. [0004]

[Problem to be Solved by the Invention] However, especially with cordless telephones, there are many cases where the power is off, the radio waves do not reach, or the call cannot be made, and the forwarder does not know whether the call is in progress or whether the call cannot be made. In other words, if the cordless telephone is located far away, it is difficult to tell whether the cordless telephone is ringing or not. [0005] Therefore, even when a call cannot be made, the user may continue to wait for a response from the cordless telephone, even though the call is still in progress. [0006]

[Means for Solving the Problems] The present invention provides a calling means for calling a cordless telephone, and a display means for displaying a message to that effect when a response to the calling by the calling means cannot be detected, thereby indicating that the call cannot be made. This is to notify the operator. [0007]

[First Embodiment] An embodiment of the present invention will be described below. [0008] FIG. 1 shows a configuration diagram of a fixed device and a slave telephone in an embodiment of the present invention. The fixed equipment consists of a private branch exchange 12 and a main telephone set 14 accommodated therein. 12 is a private branch exchange main device, 13 is a central office line accommodated in the private branch exchange, 1
4 is the main phone, 15 is the memory 129 (ROM, RAM
) and controls each part of the base phone.The control unit 16 is included in the control unit 15 and mainly controls the communication protocols of each part related to wireless.The control unit 17 is included in the control unit 15 and controls each part other than wireless. This is a call control unit that controls the display keys, voice processing circuit, etc., and processes various call-related applications. [0009] 18 is a keypad consisting of a dial key - transfer key, hold key, speaker key, hook switch, etc., 19 is a display consisting of 14 digits in two rows, and 110 is an audible tone that sends out a busy tone, dial tone, hold tone, etc. 111 is a line interface that interfaces with a wired communication line, and 112 is a wireless processing unit that transmits audio signals and control signals as wireless signals, or receives wireless signals and converts them into audio signals and control signals. circuit,
113 is an antenna, 114 is an audio processing circuit that performs audio processing through a transmitter, receiver, speaker, etc., 115 is a speaker, 116 is a handset transmitter 117 is a handset receiver, 118 is a line interface 111
, the audible display 110, the wireless processing circuit 112, and the audio processing circuit 114. [00101 The above is the configuration related to the parent phone. still,
The call control section 17 and the wireless control section 16 may exist as software programs in the control section 15. [0011] 119 is a slave phone, 120 is a control unit that controls each part of the slave phone, 121 is a keypad consisting of a dial key, a call key, etc., 122 is an audible display that sends out a ring tone, etc., 123 is a speaker, and 124 is a A wireless processing circuit that transmits audio signals and control signals as wireless signals, or receives wireless signals and processes them to convert them into audio signals and control signals; 125 is an audio processing circuit that performs audio processing through a transmitter, receiver, etc.; , 126 is a receiver of the handset, 127 is a transmitter of the handset, and 128 is an antenna. The above is the configuration of the slave phone. [0012] In this embodiment, the on-hook operation refers to an operation in which the user seizes the communication path, and can be achieved by, for example, lifting the receiver or inputting the speaker key. Furthermore, termination of the transfer operation means that no transfer is attempted unless there is a request for transfer again. That is,
Completion of a transfer operation indicates that no abort request is necessary for that transfer. [0013] Transfer from the parent phone 14 to the child phone 119 will be explained. [0014] First, in accordance with FIGS. 2 to 6, the main phone 1
The transfer processing of the call control unit 17 of No. 4 will be explained. [00151 When the transfer key is input while the parent phone is in the middle of a call (S201), the call control unit 17 requests the wireless control unit 16 to call the slave phone (S2O2);
A message indicating the start of transfer as shown in FIG. 10(d) is displayed on the display 19 (S203). Then, the wireless control unit 16 starts calling (S204) or inputs the transfer key (S20).
5) Wait for any one of the following events: off-hook operation of the main telephone 14 (S206), input of the hold key (S207), or call failure by the wireless control unit (3208). [0016] When the radio control unit 16 connects the wireless line to the child phone 119 and starts a call in 5204, the call control unit 17 refers to the memory 129 and checks whether the parent phone 14 is holding the call. Do it (S22
6). Here, if it is not on hold, line interface 1
11, audible indicator 11 via switching circuit 118
Put the call on hold by sending a hold tone from 0 to 5.
227L The display 19 displays a message indicating that the child telephone is calling as shown in FIG. 10(b) (S228). or,
A hold command is sent to private branch exchange 12, and private branch exchange 1
2 may be held. Here, slave phone 11
9 off-hook (S229), carrier off of slave phone 119 (S230), off-hook operation of master phone 14, hold key input (S231), transfer key input (S232). [00171 When the call control unit 17 detects off-hook of the child phone 119 via the wireless processing unit 112 in 5229, it checks the hook state of the parent phone (S245)
). If the main phone is off-hook at that time, the display 19 is cleared (5246), and the switching circuit 11
8 to connect the slave telephone 119 and the master telephone 14 for conversation (S247). Note that when the control unit 120 of the slave phone 119 detects that the slave phone is off-hook, it sends out a radio signal indicating off-hook. [0018] Therefore, when the on-hook operation of the master telephone is detected (S249), the switching circuit 118 is controlled to connect the held call to the slave telephone 525.
0), the display section 19 displays an indication that the child telephone 119 is in communication as shown in FIG. 10(c) (S251).
, ends the transfer process. [0019] When it is recognized in 5245 that the master telephone 14 is in an on-hook state, the above-mentioned processing from 8250 onward is performed without connecting the slave telephone and the master telephone. [0020] When the call control unit 17 detects an off-hook operation of the main phone 14 or an input of the hold key in 5231, the call control unit 17 stops the call by the wireless control unit 16.
42), clear the display 19 5243), release the hold 5244), and end the transfer process. [00211 Also, when the call control unit 17 detects the input of the transfer key in 5232, it stops the call by the wireless control unit 16 (S233) and checks the hook state (Step S234). If it is not on-hook at that time, clear the display 19 in order to make the main phone 14 communicate again (5235) and release the hold (5235).
236), the transfer process ends. [00221 When the call control unit 17 recognizes that the call is on-hook in 5234, it controls the audible display 110 to emit a ring tone in order to emphasize to the base phone 14 that there is a held call (S237). When the call control unit 17 detects the on-hook operation of the parent telephone or the input of the hold key (S238), it clears the display 19 (5239), stops the ringtone (5240), and releases the hold (S241). In this way, the main phone 1 is connected again.
4 becomes in a busy state, the transfer process ends. [0023] When the transfer by the wireless control unit 16 fails in 5208, that is, when the wireless line cannot be connected to the slave phone 119 due to a predetermined wireless procedure, or when the wireless processing circuit 11
When the carrier off of the slave phone 119 is detected by 2,
A message is displayed on the display 19 to the effect that the call cannot be made to the slave phone and the transfer has failed (S209). An example of the display is shown in FIG. 10(a). The user is also informed that one of the causes of the transfer failure is likely to be that the slave phone is not powered on. Then, the call control unit 17 checks the hook state (S210). At this time, if the device is in an off-hook state, the memory 129 is referred to to check whether the device is on hold (5211). If the call is not on hold, the audible controller 110 is controlled to emit a beep sound to emphasize that the call could not be transferred while keeping the call busy state5.
212), clears the transfer failure display on the display 19 after a few seconds 5213), and ends the process. [00241 When the call control unit 17 determines that the call is on hold in 5211, it controls the audible display 110 and calls the parent phone 1.
4 (S214). Then, input of the hold key (215) and on-hook operation (216)
) wait for the event. [0025] Furthermore, when the input of the hold key is confirmed in step 5215, the call control unit 17 stops the busy tone.
8), clear the display 17 (5219), release the hold by the switching circuit 118 and the audible display 110 (22OL), set the main telephone 14 to the busy state again, and end the process. Also, if the private branch exchange 12 holds the call,
A hold release command is sent to the private branch exchange 12 to release the hold. [0026] If on-hook operation is confirmed in 5216, stop the busy tone 5217), 82
Perform the following actions. [0027] On the other hand, when the input of the transfer key is detected in 5205, it is determined whether the transfer key is on hold (S22
3) If it is recognized that the request is on hold, the processing from 8233 onwards is performed. Further, if it is recognized in 5223 that the child phone is not on hold, the wireless control unit 16 stops calling the child phone in order to continue calling the parent phone 14 (522).
4) Clear the display 19 (5225) and end the transfer process. [0028] When an off-hook operation of the main telephone 14 is detected in 5206, the processing in 8242 and subsequent steps is performed. [0029] When the input of the hold key is detected in 5207, it is determined whether or not the hold key is on hold at that time (3
221). If the call is on hold, perform the transfer interruption process below 8242, while if it is not on hold, put the call on hold and send 52.
22), enters the waiting state again for events 8204 and below. [00301] Next, the incoming call processing of the main phone wireless control unit 16 will be explained in accordance with FIGS. do). [00311 The wireless control unit 16 of the parent phone performs carrier sense of the call channel using the wireless processing circuit 112 (S301), and waits for a request to call the slave phone from the call control unit 117 (S302). Therefore, if there is a request to call the slave telephone, the radio processing circuit 112 carries out a control channel (5303), specifies a communication channel, and transmits an incoming call signal to the slave telephone. Then, the channel is switched from the communication channel to the control channel (S305), and a timer provided on the memory 129 is set (S306). Therefore, the wireless control unit 16 receives a notification of completion of channel switching from the slave phone 119 (S307), or receives a call stop request from the call control unit 17 (S308), or receives a timeout of the timer (S309).
) wait for one of the events. (S3
11). Furthermore, it controls the radio processing unit 112 to turn on the carrier of the communication channel (5318), and issues a bell ring request to the child telephone (S319). Then, the call controller 17 is notified of the start of calling the slave phone. Therefore, the wireless processing circuit 112 receives a slave phone off-hook (S321), the wireless processing circuit 112 detects a slave phone carrier off (S322), or the call control unit 17 requests to stop the call (S323). Wait for the event. [0033] When the wireless processing circuit 112 receives the off-hook of the slave phone in 5321, the wireless controller 16
notifies the call control unit 17 that the slave phone is off-hook (S326), and ends the process. [0034] When the radio processing circuit 112 detects that the carrier of the slave phone is turned off in 5322, the radio control unit 16 controls the radio processing circuit 112 to release the communication channel (5327), and sends the communication to the communication control unit 17. A notification of the child phone carrier being turned off is made (S328), and the process ends. [0035] When the call control unit 17 issues a call stop request in 5323, the wireless control unit 16 requests the wireless processing circuit 1
12 to send a call channel release request to the slave phone 119 (5324), and release the call channel (532).
5) End the process. (0036) When the call control unit 17 issues a call stop request in 5308, the wireless processing circuit 112 receives a channel switching completion notification from the child phone 119 (53
12) or wait for a timer timeout (S313) event. [0037] When the wireless control unit 16 receives the completion of channel switching from the slave phone 119 at 5312, it resets the timer (S314). Then, it controls the radio processing circuit 112 to turn on the carrier of the communication channel 5315), sends a communication channel release request to the slave phone 5316), and releases the communication channel 5317).
, ends the process. [0038] On the other hand, when a timeout of the timer is detected in 5313, the process is immediately terminated. [0039] Further, when a timeout of the timer is detected in 5309, the call control unit 17 is notified of the call failure (S310), and the process ends. [00403 Next, the incoming call processing of the slave phone will be explained with reference to FIG. [0041] When the control unit 120 receives an incoming signal from the base telephone by the wireless processing circuit 124 (S401), it performs carrier sense of the channel specified in the incoming signal (S402) and switches to the communication channel (S403).
. The mobile phone then turns on the carrier (5404) and notifies the master phone of completion of channel switching (S405). There, it waits for a bell ringing request (8406) or a communication channel release request (5407) event from the parent telephone. [00421 When the wireless processing circuit 124 receives a bell ringing request from the parent telephone in 5406, the control unit 120 makes a ring tone sound (S408), and inputs the call key (
5409), or a communication channel release request (S410
) wait for the event. [00433 When the input of the call key is detected in 5409, the control unit 120 stops the ringing tone (5413)) The wireless processing circuit 124 notifies the main phone 14 of off-hook (S414), and ends the process. [0044] When a call channel release request is received from the base telephone 14 in 5410, the ring tone is stopped (S411
), the communication channel is released (5412), and the process ends. [0045] When a call channel release request is received from the base telephone 14 at 5407, the processing from 8412 onwards is performed. [00461 In the above embodiments, the fixed equipment consisted of the private branch exchange 12 and the main telephone 14, but the main telephone 14
The configuration is to separate the national body into two parts, such as one in which the part related to wireless control is in the form of an adapter, and the other part in the telephone body, and to connect these two national bodies as necessary. It can also be used as a master phone. [00471

[Second Embodiment] As shown in FIG. 11, in this embodiment, in the transfer process of the call control unit 17 of the main telephone 14, a judgment is made between 8201 and 8202 whether the call is on hold or not (S276). , if the call is not on hold (step 5277), i.e., switching circuit 118;
The line interface 111 controls the audible display 110
Send hold music to the other party via . Furthermore, instead of the processing below 5214, a beep sound is sounded on the main phone 14,
The display may be cleared after a few seconds by canceling the hold and placing the call again with the main phone. In this way, even if a request to start transfer is made and the call is immediately put on hold, if the slave telephone fails to call, the hold can be canceled without forcing the user to perform an operation. [0048] [Third Embodiment] Furthermore, the determination at 8226 and the processing at 8227 may be deleted, or the child suspension processing at 5227 may be selectively set to be suspended. [0049] If deleted, it is determined whether the call is on hold instead of 8226.227, and if the call is on hold, the hold is forcibly released. [00501 Also, if you do not delete it, 8246 and 324
7, it is determined whether the call is on hold, and if the call is on hold, the processing from 8247 onwards is performed. [00511 On the other hand, if the call is not on hold, or even if the hold is forcibly released, the call control unit 17, upon detecting off-hook of the child phone 119, will notify the other party who is talking to the parent phone from now on. After a beep is heard on the audible display 110 indicating that the other party is changing, the call is connected to the child telephone. Furthermore, the main phone makes a beep sound, indicates that the slave phone is talking, and sends out a busy tone. Thereafter, when the parent telephone performs an on-hook operation, the transfer process is terminated, so that the call can be transferred from the parent telephone to the slave telephone without going through the process of holding the call. Furthermore, when connecting a transferred call to a slave telephone, it is possible to display a message indicating that the communication partner will be switched for the parent telephone and the call. [0052]

[Fourth Embodiment] In the above embodiments, the fixed device consisted of the private branch exchange 12 and the main telephone 14, but as shown in FIG. 12, the private branch exchange 12 and the main telephone 14 are integrated as a wireless interface 130. You can also do this. [0053] In this case, the main control unit 1 of the private branch exchange 12
29 detects a transfer request from the extension telephone 133 via the extension interface 131, and transmits the transfer request via the wireless interface 1.
30 to call the slave telephone 119. [0054] Also, the extension telephone 133 is another extension telephone,
Alternatively, while the cordless telephone 119 is talking to an outside line, the call may be transferred to another extension telephone line or outside line. [0055] The operation of this embodiment is shown in FIG. [0056] When the transfer key of the extension telephone 133 is pressed during a call, the control unit 15 of the extension telephone 133 places the transfer key press code on the control channel by the line interface 111, and transmits the transfer key press code to the extension interface 1 of the private branch exchange 12.
Send to 31. Further, the dial number specifying the transfer destination is also sent as a numeric key press code. [0057] The main control unit 129 of the private branch exchange 12 receives and analyzes the transfer key press code and the numeric key press code via the extension interface 131 and the switch circuit 134, and controls the switch circuit 134 to determine whether the transfer key is pressed. Connect the other party on the extension telephone 133 to the sound source 132,
A hold tone is sent out (step S502). Also, identify the more specific extension or outside line of the numeric key press code,
Determine whether the extension or outside line can be called (
Step S503). If the call is possible, the main control unit 129 cancels the call (step 5504). Furthermore, a control command is sent via the switch circuit 134 and the extension interface 131, a beep sound is sent to the extension telephone 133, and a message that the call cannot be made is displayed on the display section 129 (step 5505). A call is possible when the extension number specified by the pressed numeric keypad does not exist in the first place, when the extension telephone is malfunctioning and no answer command is returned even if a call command is sent, or when a call is in progress. Cases etc. Furthermore, even if a call is in progress, if it is possible to make a call during a call, it is determined that the call is possible. In the case of an outside line, the outside line interface 135 may detect a busy tone or a ringback tone, and if no ringback tone is detected, it may be determined that the call cannot be made. Further, the determination in step 5503 may not be made in the case of external line transfer. [0058] Furthermore, when transferring to the cordless telephone 119, the main control unit 129 controls the wireless interface 130 to call the cordless telephone 119. Then, if the wireless interface 130 cannot detect a response from the cordless telephone 119, it notifies the main control unit 129 of the call failure via the switch circuit 134. In this case, the main control unit 129 determines that the call cannot be made. [0059] Then, in step 5506, the main control unit 129 releases the hold and reconnects the line. That is, the main controller 129 controls the switch circuit 134 to transfer the transferred call connected to the sound source 132 to the extension telephone 133 again.
Connect to. [00603 Also, if it is determined in step 5503 that the call is possible, the main control unit 129 calls the transfer destination and performs an off-hook operation of the telephone that performed the transfer operation (step 5507) or an off-hook operation of the transfer destination (step S508) ). When the main control unit 129 detects an off-hook operation of the transfer source via the extension interface 131 in step 5507, it cancels the hold and reconnects the line (step S506). [00611 At step 5508, the main control unit 129
Similarly, when off-hook of the transfer destination is detected, the switch circuit 134 is controlled to connect the extension telephone 1 that performed the transfer operation.
Connect 33 with the called party (step 5509)
. Then, when the transfer requester goes off-hook after notifying the transfer destination responder by phone that the transfer will be transferred, the main control unit 129
controls the switch 134 to connect the call held in step 8502 to the transfer destination (step 3510). [0062] Note that when off-hook of the transfer destination is detected in step 5508, if the transfer source is off-hook, the held call and the transfer destination are connected without connecting the transfer source and the transfer destination. [0063] The same applies when you answer an incoming external call on the extension telephone 133 and the other party is using a facsimile, and the call is transferred to one of the plurality of facsimiles (including a cordless facsimile) accommodated in the extension. . [0064] In the above explanation, the case where a transfer request is made using the extension telephone 133 has been explained, but the cordless telephone 119
When requesting transfer from the antenna 113, the wireless interface 130, the main control unit 129 sends the transfer request to the
It is detected via the switch circuit 134. By doing so, it is possible to control in the same way when transferring from the cordless telephone 119 to another cordless telephone or an extension telephone. [0065] Also, in step 3503, the main control unit 129
Since the reason why the call cannot be made can be identified, in step 5504, the extension telephone that requested the transfer displays the fact that the call cannot be made and the reason. That is, if the extension number specified by the extension telephone that requested the transfer does not exist, that is, if it is not registered in the built-in memory, a display is displayed to notify that the extension number has been input incorrectly. Further, if a response to the calling command is not returned due to a failure, intermittent operation, etc., a display is displayed to notify the failure of the transfer destination. If the transfer destination is busy, a display is displayed to notify that the transfer destination is busy. Also, if a wireless line cannot be connected when calling a cordless telephone, a message to that effect is displayed. [0066] The transfer requester looks at the display, and if there is an input error, re-enters the input, or if the call is busy, inputs another extension number. If it is broken, you can request it to be repaired later. [00671 The above explanation is for the case of transfer, but it may be displayed in the same way when transfer is not possible and it is a normal call. [0068]

According to the present invention, when a cordless telephone is called, if a response to the call cannot be detected, a message to that effect is displayed, thereby preventing the operator from continuing to wait pointlessly for a response from the cordless telephone. be.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of a fixed device and a mobile device according to a first embodiment.

FIG. 2 is a flow diagram of transfer processing (1) of the fixed device according to the first embodiment.

FIG. 3 is a flow diagram of transfer processing (2) of the fixed device in the first embodiment.

FIG. 4 is a flow diagram of transfer processing (3) of the fixed device in the first embodiment.

FIG. 5 is a flow diagram of transfer processing (4) of the fixed device in the first embodiment.

FIG. 6 is a flow diagram of transfer processing (5) of the fixed device in the first embodiment.

FIG. 7 is a flowchart of incoming call processing (1) of the fixed device according to the first embodiment.

FIG. 8 is a flowchart of incoming call processing (2) of the fixed device according to the first embodiment.

FIG. 9 is a flow diagram of incoming call processing of the mobile device according to the first embodiment.

FIG. 10 is a diagram of the display section of the first embodiment.

FIG. 11 is a flowchart of transfer processing of a fixed device according to a second embodiment.

FIG. 12 is a system configuration diagram of a fourth embodiment.

FIG. 13 is a flow diagram of transfer processing in the fourth embodiment.

[Explanation of symbols]

14 Main phone 15 Control section 19 Display 119 Child phone

[Figure 1]

[Figure 2]

[Figure 3]

[Figure 4]

[Figure 5]

[Figure 7]

[Figure 10]

[Figure 6]

[Figure 8]

[Figure 13]

[Figure 9]

[Figure 11]

[Figure 12] Continued front page (72) Inventor (72) Inventor 1) Shinji 3-30-2 Shimomaruko, Ota-ku, Tokyo Shunji Uchiarai, Canon Co., Ltd. 3-30-2 Shimomaruko, Ota-ku, Tokyo No. Inside Canon Co., Ltd. (72) Inventor Shigeru Hiroki 3-30-2 Shimomaruko, Ota-ku, Tokyo Inside Canon Co., Ltd.

Claims (1)

[Claims] Claim 1: Calling means for calling a cordless telephone;
A cordless telephone system characterized by comprising: display means for displaying a message to that effect when a response to a call by the calling means cannot be detected.