JPH05145964A - Continuous calling system for system cordless telephone - Google Patents

Abstract

PURPOSE:To shorten connecting time in the case of calling to another party succeedingly to the end of current speaking by providing a call-waiting calling requesting means. CONSTITUTION:When a slave set 8 disconnects the speaking to an opposite party under communicating at present and connects to the other opposite party, a calling request signal is sent to an exchange 1 by a call-waiting calling informing means 9. When the calling request is detected by a call-waiting calling detection means 2, the exchange 1 holds a speaking channel used by the slave set 8 by a speaking channel holding means 3, releases the connection to the opposite party of the slave set 8 by a speaking party releasing means 4, calls the new opposite party and connects it to the slave set 8 by a calling party connecting means 5. Thus, the slave set can succeedingly originate calls, and the time for calling the opposite party can be shortened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous call system in a multi-zone system cordless telephone.

In a multi-zone system cordless telephone, a service for switching connection to a cordless handset in each zone is provided through a connecting device equipped with a wireless device in which a local or public exchange is arranged in each zone. I do. In such an exchange service, in order to connect to the other party after making a call, an operation according to a procedure such as designation of a communication channel by a control signal is performed between the exchange and the slave by a control channel. In addition, since the number of channels that can be used is limited, if you want to make a call again to talk to another party after the call ends, you may not be able to connect to the other party immediately. It is rare.

[0003]

2. Description of the Related Art FIG. 9 shows a configuration example of a conventional system cordless telephone, and FIG. 10 shows an operation sequence of conventional continuous calling.

In FIG. 9, EX is a multi-zone type system cordless telephone switchboard, BS is fixedly installed in each zone, and wirelessly transmits and receives a call signal and a control signal to and from a slave unit and performs a control operation. The connection device, PS is a movable child device, and A and B are telephones accommodated in the exchange EX. In the case of a premises system, for example, each floor of the building is assigned to a different zone.

In this example, the exchange EX is a configuration of facilities for the premises, and the exchange EX is connected to an external line from another private branch exchange or a public network and a plurality of connection devices BS, and the required exchange connection or , Controls start and disconnection of communication with the connection device BS for each child device PS.

The operation sequence of the conventional continuous calling executed by the configuration of FIG. 9 will be described with reference to FIG. In FIG. 10, signals transmitted and received between the exchange, BS and PS are shown, and the exchange has a communication path (NW) and a control unit (C).
It is shown separately in C).

First, it is assumed that the PS user is talking to the other party of the telephone set A accommodated in the exchange EX via the BS (a in FIG. 10). At this time, a large number of call channels (Sc) for transmitting and receiving wireless call signals are transmitted between the BS and PS.
A call is being made using a channel designated by the BS from among the (h).

When the PS ends the call with the partner of the telephone A and wants to call another partner of the telephone B subsequently,
Press the end key. Then, the disconnection signal is transmitted to the BS and the exchange (b in FIG. 10). Upon receipt of this, the exchange controls the speech path (NW) to disconnect the path connecting the telephone A and PS, and at the same time sends a Sch release request signal to the PS via the BS (same c). When the PS which has received this transmits the Sch release signal, it is received by the exchange through the BS (same as d), and the processing for ending the call is completed.

Thereafter, when the user wants to call another telephone set B (FIG. 9) on the PS, when the call key is pressed, a calling signal is sent to the exchange via the BS using the control channel (referred to as Cch) (see FIG. 10e). When the exchange receives this and sends the call-out permission to the BS (same f), the BS sends P
Search (hunt) for the Sch that should be assigned to S,
When the vacant Sch is hunted, the Sch designation signal is transmitted to the PS through the control channel (at the same g). Upon receiving this, the PS transmits a Sch confirmation signal by the designated Sch (the same h). Upon receiving the Sch confirmation signal, the BS notifies the exchange of the establishment of Sch (Same i). After this, when the exchange sends a dial tone (DT) to the PS (at j), PS sequentially sends dial signals indicating the number of the telephone set B (at k).

[0010]

As described above, in the conventional system cordless telephone, when disconnecting a call in progress and calling again, the call channel (Sch) is temporarily released,
There is a problem that it takes a long time to connect to another call because another call channel needs to be re-hunted when the call is called again. Further, there is a problem that not only the call channel but also the control channel (Cch) may become busy (in use) at the stage of the recalling and the recalling may not be possible.

An object of the present invention is to provide a continuous call system for a system cordless telephone, which can terminate the current call and shorten the connection time when continuously calling other parties. To do.

[0012]

FIG. 1 is a block diagram showing the principle of the present invention. In FIG. 1, 1 is an exchange, 2 is a call origination detecting means, 3 is a call channel holding means, 4 is a caller releasing means, 5 is a caller connecting means, and 6 is a dial number registered in advance. A number registration table, 7 is a line for supplying a dial number, 8 is a slave unit (PS), and 9 is a call origination notification means during a call.

According to the present invention, when an active call request is issued to the exchange when the active call is terminated and it is desired to call another party continuously, the exchange detects that the active call is being issued. The call is released while the current call channel is held, and the call is connected to the other party corresponding to the requested content.

[0014]

When the user of the handset 8 is talking with a partner of a telephone connected through the exchange 1, the assigned specific call channel is used between the handset 8 and the exchange 1. When the user of the handset 8 wants to end the current call with the other party and make a call to another telephone, the call notification means 9 during a call is driven. The call notification means 9 during the call is, for example, the handset 8
The following two cases are available as the types of the call origination notifying means 9 during a call, which are realized by the function keys provided in the.

In the case of indirectly instructing a continuous calling party by a signal generated by the calling notification means 9 during a call (for example, a one-touch key). When the signal generated by the call origination notifying means 9 during a call simply requests continuous calling (in this case, subsequently, the dial number of the other party of continuous calling is transmitted).

The exchange 1 detects by a call origination detection means 2 when a call origination request signal is sent from the handset 8 during a call. As a result, the call channel holding means 3 is driven to hold the call channel (Sch) currently used for communication between the handset 8 and the exchange 1, and subsequently the call party releasing means 4
Start to disconnect and release the current path to the other party. After that, the calling party connecting means 5 is driven to connect with the requested party.

The calling party connection means 5 is supplied with the dial number of the party of continuous calling corresponding to the signal detected by the call origination detection means 2. That is, in the case of the above signal, the number registration table 6 is referred to, and the partner dial number corresponding to the signal is taken out.
The dial number sent subsequently from is supplied via line 7.

When the caller connecting means 5 is connected to the caller for continuous calling, the call channel (Sch) held by the call channel holding means 3 is used to start a call with the slave unit. ..

[0019]

FIG. 2 is a system configuration diagram in which the present invention is implemented,
3 is a configuration diagram of the connection device control unit and the connection device, FIG. 4 is a first operation sequence of the embodiment, FIG. 5 is a second operation sequence of the embodiment, and FIG. 6 is a connection state of each unit corresponding to the operation sequence. 7 and 8 are process flows (part 1) and (part 2) of the embodiment in the exchange.

In FIG. 2, 20 is a network (N
W), 21 is a common control device (CC), 22 is a main storage device (MM), 23 is a connection device control unit (BSC), 24 is a connection device (BS), and 25 is a child device (PS). In this example, the private branch exchange (PBX) is composed of 20 to 23 in FIG.

The common control unit 21 controls the connection of incoming and outgoing calls between the slave unit 25 and other slave units and external lines (connected to other private branch exchanges and public networks), and at the same time, according to the present invention, the slave unit 25 is controlled. The processing described later is performed corresponding to the signal requesting the calling during the call. The connection device control unit 23 receives control signals for the connection device 24 and the slave device 25 from the common control device 21 and transmits them, and receives control signals from the slave device 25 and the connection device 24 and supplies them to the common control device 21. I do. The main storage device 22 stores data registered in advance for each slave unit 25 by the user, for example, a partner dial number corresponding to a one-touch key number, or a saved number dial (when the user wants to redial later. A registration table 220 for storing the number of the other party who has already dialed, the number of the caller at the time of answering the incoming call, the number of the dial number stored by the operation of the saved number key, or the like.
Is equipped with.

The internal block structure of the connection device controller (BSC) 23 is shown in FIG. Shown in. A. of FIG. INF
Reference numeral 230 is an interface circuit for transmitting and receiving control signals between the common control device (CC21 in FIG. 2) and the line termination device (CT) 231. The CT 231 is a connection device (BS in FIG. 2).
24) is connected to a driver (D) 232 and a receiver (R) 233 which are connected by a line to the control signal INF230.
And a communication signal (voice etc.) with a network (NW20 of FIG. 2).

The block configuration of the connection device (BS) 24 shown in FIG. Shown in. B. of FIG. Receiver (R) 240 and driver (D) 241 of the connection device control unit 23 are connected to the driver and receiver of the connection device control unit 23 via lines to transmit and receive control signals and call signals, and a line termination device (CT).
242 is a decoder (DC) 244, a coder (CD) 24
The wireless unit 2 is connected to the wireless unit (RF) 246 via
46 communicates with the child device by radio waves. The modem unit (MD) 247 is connected to the wireless unit 246 and has a function of modulating and demodulating a control signal. The control signal to be transmitted to the slave unit is instructed by the control unit (CTL) 243, and the received control signal is the control unit 243. Supply to. The control unit 243 controls the line terminating device CT242 and the radio unit 246. The control unit 243 controls the allocation of the call channel (Sch) and the control channel (Cch) and transmits / receives the call signal and the control signal to / from the connection device control unit BSC (A in FIG. 3), and the control information is the connection device. It is sent to the common control unit (21 in FIG. 2) of the exchange through the control unit BSC, and the processing of the continuous call request during the call is performed.

The operation sequence of the embodiment executed by the system configuration shown in FIG. 2 and the configuration shown in FIG. 3 will be described with reference to FIGS. 4 and 5, NW and BSC are networks controlled by the central control unit of the exchange (20 in FIG. 2) and connection device control unit (23).
BS is a connection device (same as 24) and PS is a slave unit (same as 2).
5) is represented.

In the first operation sequence of FIG. 4, when the PS is in a call with the other party through the call channel (Sch) (a in FIG. 4), the call with the current party is terminated and the other party is terminated. When you want to make a call to, you do not have to operate the key to end the call with the current party, but you can operate the function key that specifies the party to call next with a single operation. Specifically, as a function key, "one-touch dial key" or
Use a key such as "Saved Number Redial Key". A plurality of one-touch dial keys are provided. For each one-touch dial key, the original dial number is registered in advance in the main storage device (registration table 220 of FIG. 2) of the exchange, and the saved number redial key (S
In the case of N key), the dial number is registered by operating the save number (save number) key when making a call or after dialing, and the number is retrieved by the saved number redial key. ..

When any one of these keys is operated from PS, a code for displaying that key is sent to BS (b in FIG. 4). This code is sent to the exchange via the BS. In the exchange, if this code is received during a call, the network (NW) between the current party and the PS
While disconnecting the above path and selectively connecting and calling the other party designated by the code, a ringback tone (RBT) is sent to the PS (c in FIG. 4).

In the second operation sequence of FIG. 5, when the PS is in a call (a in FIG. 5) and wants to make a call to another party as in the case of FIG. 4, a key for ending the call with the current party is pressed. A new call key (NC key) for generating a code signal for displaying a new call is operated without any operation. When this new call code is sent to the exchange through the BS (b in FIG. 5), the exchange retains the current communication channel (Sch) and disconnects the path with the current communication partner. A dial tone (DT) is sent (same c). When the PS user hears this, he / she dials the number of the desired partner (same as d), and it is received by the exchange, and the process of selectively connecting that partner is performed.

FIG. 6 shows a change in the connection state of each part corresponding to the operation sequences shown in FIGS. 4 and 5. Of FIG.
(a) is a state in which the PS is connected to the telephone set A via the BS and the exchange and is in a call, and in this state, the PS is a specific key such as the one-touch dial key or the SN key or the N key.
When the C key and dial number are operated, the exchange disconnects the path between the telephone A and the PS and sends a busy tone (displayed in BT) to the telephone A as shown in (b). After this, the exchange enters the state of (c) in which the other telephone B designated by the PS is selected and called and the ring back tone (RBT) is transmitted to the PS, and when the other telephone B answers, (d)
A path connecting the telephone B and PS is formed as shown in FIG.

Next, the processing flow of the embodiment shown in FIGS. 7 and 8 in the exchange for realizing the operations shown in FIGS. 4 and 5 will be described. This processing flow is executed by the common control device CC (21 in FIG. 2) of the exchange. As the whole processing, the A. Is executed, and the signal sent from the PS is monitored in the talking state. First, it is judged whether or not the one-touch dial key signal is received (7 in FIG. 7).
0), flow if yes (YES in FIG. 7)
If it is no (NO), then it is judged whether or not the saved number redial key signal is received (at step 71), and if yes, the flow proceeds to (A. in FIG. 8). To determine whether the New Call key signal has been received (7)
2). If it is determined that the New Call key signal has been received, the process proceeds to the flow (B. in FIG. 8), and if all of the steps 70 to 72 are NO, the normal call processing (73). , And periodically returns to step 70 for monitoring.

B. of FIG. In the process when a one-touch dial key signal is received, which is started by the process shown in (4), the connection partner release process and the path disconnection are performed (74), and the destination number corresponding to the one-touch dial key is registered in the registration table (2 in FIG. 2).
20) is read (75). Next, the other party's calling process of the destination number (calling signal to the other party, RBT transmission to PS) is performed (step 76), and the process shifts to calling. After this, the path is closed according to the other party's response.

Next, referring to FIG. In the process when the saved number redial key signal is received, which is started by the process (4), the connection partner release process and the path disconnection are performed as in the above case (80 in FIG. 8), and the saved dial number is read ( 81), the other party's calling process of the read dial number is carried out (82), and the calling state is set. Further, as shown in FIG. Is the case where the New Call key signal is received. In this case also, the connection partner release processing and the path disconnection are performed (at 83), and a dial tone is sent to the PS (at 8).
4). After this, since the dial number is sent from the PS, the receiving process of the dial signal is performed (85) and the calling process of the other party is performed (86) to shift to the calling state.

[0032]

According to the present invention, in the system cordless telephone, when the cordless handset continuously calls another party after the other party who is currently in a call, the end key is operated continuously without calling again. Since the call can be made, the time required to call the other party can be shortened.

[Brief description of drawings]

FIG. 1 is a principle configuration diagram of the present invention.

FIG. 2 is a system configuration diagram in which the present invention is implemented.

FIG. 3 is a configuration diagram of a connection device control unit and a connection device.

FIG. 4 is a first operation sequence according to the embodiment.

FIG. 5 is a second operation sequence according to the embodiment.

FIG. 6 is a diagram showing a change in a connection state of each unit corresponding to an operation sequence.

FIG. 7 is a processing flow of the embodiment in the exchange (part 1).
Is.

FIG. 8 is a processing flow of the embodiment in the exchange (part 2).
Is.

FIG. 9 is a diagram showing a configuration example of a conventional system cordless telephone.

FIG. 10 is an operation sequence of conventional continuous call origination.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Switchboard 2 Call origination detecting means 3 Call channel holding means 4 Calling party releasing means 5 Calling party connecting means 6 Number registration table 7 Line 8 Handset (PS) 9 Call origination notifying means

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Takashi Matsumoto 1015 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Fujitsu Limited (72) Inventor, Ken Ken Iwasa, 3-9-18, Shin-Yokohama, Kohoku-ku, Yokohama City, Kanagawa Prefecture, Fujitsu Komiyu (72) Inventor Satoshi Takahashi 1015 Kamiodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa Fujitsu Limited

Claims (3)

[Claims] 1. In a multi-zone system cordless system in which a switch and a slave communicate wirelessly, the slave sends a message to the switch when disconnecting a call with the other party currently communicating and connecting to the other partner. A call origination notification means for generating a signal indicating a call request is provided, and the exchange is equipped with a call origination detection means for detecting a call origination request from a handset during a call, and a call is originated when a call origination request is detected. While maintaining the call channel used by the child device, processing for releasing the connection of the child device to the current call partner is performed, and after the disconnection, a new call partner instructed by the child device is called, A continuous call system for a system cordless telephone, wherein the machine talks to a new caller called through the held call channel. 2. The slave unit according to claim 1, further comprising a function key in which a dial number corresponding to a signal generated by operating a specific key is registered in advance in the exchange, and the key is used to notify the call origination during call. The call origination detecting means of the exchange detects the function key signal generated during a call, reads out the registered dial number corresponding to the detected function key, and calls a new caller. A continuous call system for system cordless telephones. 3. The calling device according to claim 1, wherein the cordless handset uses a key for generating a signal indicating a new call as a call origination notification means, and the exchange uses the call origination detection means to indicate whether a call is in progress. A continuous calling system for a system cordless telephone, which is characterized in that when a call is detected and a dial number sent subsequently from a handset is received, a new communication partner is called using the dial number.