JPH05252276A - Telephone set with di service function - Google Patents

Abstract

PURPOSE:To obtain the telephone set offering satisfactory operation convenience by providing a timer started on receiving a call and calling another telephone set when a telephone set designated at the time of arrival of an incoming call to a main line does not reply to the call for a prescribed time. CONSTITUTION:When a call comes to a slave set, e.g. 30 designated by an extension designation signal, a timer whose set time is a prescribed time is started. When the slave set 30 does not reply to the incoming call and the timer counts out, ringing of the slave set 30 at the time of arrival of an incoming line to the main line is stopped and the main line incoming tone of the master set 1 is sent from a speaker 21. Thus, the talking state is transited between the master set 1 and the caller. Then the designated slave set, e.g. 30 is called at the time of arrival of an incoming call to a main line and when the slave set 30 does not replay within a prescribed time, the master set 1 is called.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone device with a DI service function which accommodates a plurality of telephones and has a dial-in (DI) service function for calling a telephone having an extension number designated by a subscriber exchange. ..

[0002]

2. Description of the Related Art In general, a subscriber switching system uses a DI of this type.
When realizing the service function, the connection operation as shown in FIG. 4 is performed. That is, when the caller calls an extension telephone accommodated in a subscriber terminal such as a PBX, the subscriber line L
While reversing the polarities of 1 and L2, a calling signal is transmitted. After that, when the subscriber terminal receives the primary response signal by capturing the line and closing the DC loop, it sends an extension designating signal consisting of 1 to 4 digits to the terminal side as a PB signal and at the terminal side. Waiting for the reception completion signal of the extension designating signal due to the disconnection of the DC loop from, and when the reception completion signal is received, a ringing tone, that is, a ring back tone is sent to the caller. On the other hand, when the terminal side receives the extension designation signal, it releases the captured line and transmits the above reception completion signal to the exchange side, but at the same time, it sends a ringing signal to the telephone with the designated extension number. When the extension telephone in question responds, a secondary response signal by reacquisition of the opened line is transmitted to the exchange side. As a result, the exchange stops the ringing tone being sent to the calling party, and repolarizes the polarities of the lines L1 and L2, and as a result, the line call between the calling party and the called party of the designated extension telephone is performed. It will be possible.

[0003]

A telephone device connected as a terminal to a subscriber exchange that provides such a DI service individually calls a telephone having a designated extension number among a plurality of accommodated extension telephones. I am trying. Therefore, if the designated telephone does not answer the call for a long time, for example, because the called party is moving to another place, the calling party abandons the call and returns after a while. There is a problem that it is inconvenient to use because there is no method other than calling or calling another extension telephone to contact the desired party.

[0004]

In order to solve such a problem, the present invention accommodates a plurality of extension telephones and, when an incoming call is made to an extension line, an extension telephone designated by an extension designation signal from a subscriber switching system. In a telephone device with a DI service function for calling, a timer which is activated when a call is made to an extension telephone designated based on an extension designation signal, a detecting means for detecting a response to the call, and detection until the timer expires And a control means for calling an extension telephone other than the designated extension telephone when the response of the call is not detected by the means.

[0005]

A call is made to the extension telephone designated by the extension designation signal, and if the response of this telephone is not detected for a predetermined time, another extension telephone is automatically called.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a telephone device with DI service function according to the present invention. The device is
A cordless telephone device that includes a base unit 1 that accommodates a telephone line L and has a switching function and a call function and a handset 30 that has only a call function, and that the base unit 1 and the handset 30 are connected by a wireless line. The DI service function is provided by the subscriber exchange.

In FIG. 1, the base unit 1 is constructed as follows. That is, 5 is a CPU, 10 is a DC loop of the telephone line L, and a loop and reversal detection circuit for detecting reversal, 1
1, 13 are diode bridges, 12 is an incoming detection circuit,
14 is a transistor for closing the loop and sending a DP dial signal, 15 is a communication circuit, 16 is an IDROM,
Reference numeral 17 is a hook switch, 18 is a key portion including various keys, 19 is a display portion, 20 is a tone ringer for ringing a ring tone, and 21 is a speaker. 22 is the above D
A dial IC for generating a P-dial signal and a PB-dial signal, 23 a PB receiver for receiving a PB dial signal from the telephone line L, 24 a cassette mechanical unit for recording / reproducing a voice signal, and 25 a telephone line L. , A line signal detection unit for detecting various signals such as dial tone and busy tone, 26 is a voice IC for sending a voice message to the telephone line L, 27 is a wireless transmission / reception unit for communicating with the handset 30 via a wireless line, Reference numeral 28 is a radio receiving unit for detecting an interfering radio wave, and 29 is an amplifier.

The slave unit 30 is constructed as follows. That is, 31 is a wireless transmission / reception unit that communicates with the base unit 1 via a wireless line, 32 is an IDROM, 33 is a key unit including various keys, 34 is a CPU, and 35 is a ringing tone or other ringing tone. Tone ringer for, 36 is a speaker,
37 is an amplifier.

In the cordless telephone device provided with such a DI service function, different telephone numbers are given to the base unit 1 and the handset unit 30, respectively, and the last 1 to 4 digits of these numbers are assigned. The number is stored as an extension designation number in the memory of the CPU 5 in the base unit 1. And
When the caller makes a call to the child device 30, for example, an incoming call arrives at the telephone line L accommodated in the parent device 1. Since the base unit 1 has a function as a terminal as shown in the operation sequence diagram of FIG. 3, it automatically responds to this incoming call and returns a primary response signal to the subscriber exchange. After that, when the extension designation signal designating the slave unit 30 is received from the subscriber exchange, the captured line is disconnected and a signal indicating the completion of reception of the designation signal is sent to the exchange side.
The slave unit 30 is caused to ring a ringing tone via the wireless lines of the wireless transmission / reception units 27 and 31.

When the call key of the handset 30 is operated and a response to the incoming call is detected, a wireless call path is formed, the line L is captured again, and a secondary response signal is sent to the exchange side. As a result, a call between the child device 30 and the calling party via the parent device 1 is started. It should be noted that if the response of the child device 30 cannot be detected after calling the child device 30 for a predetermined time, the calling to the child device 30 is stopped and the parent device 1 is called.

Next, FIG. 2 is a flow chart of the CPU 5 in the base unit 1 which performs a call destination changing operation when an incoming call is made to a station line.
That is, in step 200, it is judged whether or not the incoming call to the telephone line L is received by the caller. When the arrival of an incoming call is detected and it is determined to be "Y" in step 200, the central line, that is, the line L is automatically captured (1
Along with the next response; step 201), the extension designation signal from the exchange is received via the PB receiver 23. When this extension designation signal is received, the station line indicating the reception completion signal is opened (step 203), and then the received extension designation number is compared with the extension number stored in advance in the memory, In step 204, it is determined whether the designated extension is the child device 30.

When the designated extension is the slave unit 30, the station ringing data is transmitted to the slave unit 30 via the wireless lines of the wireless transmission / reception units 27 and 31, and the tone ringer 35 in the slave unit 30 is driven to operate the station. A line ringing tone is sounded (step 205) and a timer for a predetermined time is started (step 206). Then, step 20 is performed to judge whether the call button (call key) data indicating the response to the incoming call from the handset 30 is received and whether the timer is up.
7,208. If the handset 30 does not respond to the incoming call and the timer times out (“N” in step 207 and “Y” in step 208),
The ringing tone of the local line of the handset 30 is stopped, and the process proceeds to step 209 to drive the tone ringer 20 to drive the base unit 1
The station 21 ring tone is sent from the speaker 21. afterwards,
In step 210, the off-hook of the base unit 1 is determined through the hook switch 17, and when the off-hook is detected, the line of the line is captured by the person handling the base unit 1 and the caller in step 211. (Step 212).
Also, if the call key data indicating the incoming call response is received from the handset 30 before the timer times out (in the case of “Y” in step 207), the process proceeds to step 211 to acquire the station line, and as a result, A call to the station line is made by the person who handles the child device 30 and the caller. In this way, a call is made to, for example, the cordless handset 30 designated when an incoming call is made to the station line, and the cordless handset 30
If no response is made within a predetermined time, the base unit 1 is called.

Next, FIG. 3 is a flow chart showing the operation of another embodiment of the present invention. Here, FIG.
A flowchart of the CPU 5 in FIG.
Shows a flowchart of the CPU 34 in the child device 30. First, the operation of the master device 1 shown in FIG. 3A will be described. The operations shown in steps 300 to 305 of FIG. 3A are equivalent to the operations of steps 200 to 205 of FIG. That is, the extension designation signal is received in response to the incoming call coming to the telephone line (station line) L. After that, the central office line is released, and in step 304 it is judged whether the designated extension is a slave unit.
Then, if the designated extension is the slave unit 30, the station arrival sound data is transmitted to the slave unit 30 and the station line ringing tone of the slave unit 30 is sounded. After the ringing tone is sounded, the handset 30 counts the number of ringing of incoming calls and detects a call key indicating a response to this incoming call, as will be described later. When the incoming call is not answered, the non-response data is transmitted to the master unit 1.

In steps 306 and 307, the base unit 1 judges whether or not the call key data and the non-response data are received from the sub-unit 30 and receives the non-response data (in the case of "Y" in step 307). ) Is step 309
And the ringing tone of the main unit 1 is activated. afterwards,
In step 309, the off-hook of the base unit 1 is determined via the hook switch 17, and if the off-hook is detected, the line acquisition is performed (step 310). As a result, a transition is made to a line communication state between the person who handles the base unit 1 and the caller (step 311). Further, when the call key data indicating the incoming call response is received from the handset 30 (in the case of "Y" in step 306), the process proceeds to step 310 and the line acquisition is performed. As a result, a call is made to the office line between the person who handles the handset 30 and the caller.

Next, the operation of the child device 30 corresponding to the operation of the parent device 1 as described above will be described based on the flowchart of FIG. 3B. First, when it is determined in step 350 that “Y” is received from the base unit 1 through the wireless line including the wireless transmission / reception units 27 and 31, etc., the tone ringer 35 is driven to output the local line ring tone. The sound is emitted to the speaker 36 once (step 351) and the ring counter provided in the memory in the CPU 34 is incremented by 1 (step 35).
2). Then, in steps 353 and 354, it is determined whether the call key in the key unit 33 is pressed and whether the ring counter has reached a predetermined value. If the pressing of the call key cannot be detected and the ring counter has not reached the predetermined value (in the case of "N" in steps 353 and 354),
The process returns to step 351 and the ringing tone for the office line is sounded again.

When the call key depression is detected while the ringing tone is ringing and the answer is "Y" in step 353, the call key data is sent to the base unit 1 by the wireless line. (Step 35)
At the same time as 5), the ringing of the line tone is stopped (step 3).
56). As a result, a call between the caller and the person who handles the child device 30 is started. Further, when the value of the ring counter reaches a predetermined value and the incoming call is not answered yet (“Y” in step 354).
In the case of), the non-response data is transmitted to the base unit 1 (step 357), and the ringing of the station line ringing tone is stopped (step 358). When the non-response data is thus transmitted to the base unit 1, the call destination becomes the base unit 1, and as a result, the off-hook of the base unit 1 starts a call between the caller and the person who handles the base unit 1. In this way, when a call is received to the station line, the call is made to the slave unit 30 designated by the extension designation signal, and if the call is not answered even if the number of calls reaches a predetermined number, the call is made to the master unit 1. .. On the contrary, when the parent device 1 is first designated and called, the child device 30 is called unless the parent device 1 responds within a predetermined time or a predetermined number of calling times. In the present embodiment, the case of one master and one slave is described, but when a plurality of slaves are accommodated, the callee is stored in the memory in advance by the setting operation,
When the designated slave unit does not respond, the master unit or slave unit of the set callee may be called, or all the slave units may be called.

[0017]

As described above, according to the present invention, when an incoming call is made to an extension line, a call is made to the extension telephone set designated by the extension designation signal, and if the response of the telephone set is not detected for a predetermined time, another extension line is automatically set. Since the call is made to the telephone, if the called party cannot be contacted due to reasons such as moving to another place, the calling party can quickly call the desired party without making a call again. Since it is possible to contact them, as a result, it is possible to provide a convenient telephone device.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a telephone device with DI service function according to the present invention.

FIG. 2 is a flowchart showing an operation of a parent device in the device.

FIG. 3 is a flowchart showing the operation of another embodiment of the above apparatus.

FIG. 4 is a sequence diagram showing a connection operation between a subscriber exchange and a subscriber terminal when a DI service is provided.

[Explanation of symbols]

 1 Master unit 5,34 CPU 12 Incoming call detection circuit 15 Call circuit 18,33 Key unit 20,35 Tone ringer 21,36 Speaker 22 Dial IC 23 PB receiver 27,31 Radio transmitter / receiver unit 30 Slave unit A1, A2 Antenna L Telephone line

Claims (1)

[Claims] 1. A telephone device with a DI service function, which accommodates a plurality of extension telephones and has a dial-in service function for making a call to an extension telephone designated by an extension designation signal from a subscriber exchange when receiving an incoming call from a subscriber line. A timer that is activated when a call is made to an extension telephone designated based on the extension designation signal, a detection unit that detects a response to the call, and a detection unit that detects the call until the timer times out. A telephone device with DI service function, comprising: a control means for calling an extension telephone other than the designated extension telephone when no response is detected.