JP3134812B2 - Apparatus and method for transferring caller information - 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 transferring caller information between a master station and a slave station of a system for setting up a radio channel by a multi-channel access method.

[0002]

2. Description of the Related Art Heretofore, when an incoming call is received from an exchange to a telephone, a caller information, for example, an FSK signal is transferred between ringing signals between ringing signals.
An ND (Calling Number Delivery) service is provided.

In such a conventional CND transfer system for realizing a CND service, in a system in which an exchange and a telephone are connected by a wired line, a ringing signal received by the exchange from a calling side and a ringing signal following the ringing signal are received. FSK indicating caller information transmitted during the ringing signal
By transmitting the signal as it is to the telephone side, it is possible to ring the incoming call at the telephone side and demodulate and display the caller information (for example, Japanese Patent Laid-Open No.
165748).

[0004]

By the way, in a radio communication system for setting a radio channel between a master station (base station) and a plurality of slave stations (terminal stations), a limited radio channel is effectively used. Therefore, when performing wireless communication between a master station and a slave station, a multi-channel access method is adopted in which a vacant wireless channel is selected from a plurality of wireless channels allocated to the system and used.

In this multi-channel access type radio communication system, a master station exchanges a message with a terminating slave station by setting a control channel in response to the arrival of a ringing signal from an exchange. In addition, a call or data communication is performed by setting a path using a voice channel or a data channel.

However, when the above-described CND transfer method is applied to such a multi-channel access wireless communication system, a path is set by exchanging messages between the master station and the called slave station as described above. Since it takes a long time to perform the setting, when the FSK signal is transmitted following the first ringing signal from the exchange, a path cannot be set between the master station and the slave station.

Therefore, when a path is set between the master station and the slave station, the FSK signal representing the caller information is lost at the master station, and the slave station properly receives the FSK signal. There is a problem that the caller ID cannot be displayed on the telephone.

That is, as in the case of a wired line,
There is a problem that a caller ID display can be realized even with a telephone connected to a child station received by a wireless line.

Therefore, an object of the present invention is to provide a terminal device that transmits caller information that enters a master station from an exchange to the slave station and connects to the slave station even in a system in which the master station and the slave station are connected by a wireless line. It is an object of the present invention to provide a caller information transfer apparatus and method capable of correctly displaying a caller number and the like.

[0010]

In order to achieve the above object, the present invention comprises a base station connected to a communication line from an exchange, a plurality of slave stations, and a telephone connected to the slave station. A caller information transfer device for a system for setting up a radio channel between the base station and a slave station by a multi-channel access method, wherein the base station sends first and second ringing signals from the exchange to the base station. Storing means for receiving caller information between signals and storing the caller information; and wireless transmission means for transmitting the caller information to the slave station after establishing a communication path with the slave station. The first and second ringing signals and the caller information having the same timing relationship as the first and second ringing signals and the caller information to the telephone set. Control means for controlling To.

Further, the present invention has a base station connected to a communication line from an exchange, a plurality of slave stations, and a telephone connected to the slave station. A method for transferring caller information in a system for setting up a wireless line by a multi-channel access method, comprising: transmitting, by the base station, first and second ringing signals and caller information between the respective signals from the exchange. Receiving, storing the caller information, transmitting the caller information to the slave station after establishing a call path with the slave station, and in the slave station, the first, The first and second ringing signals and the caller information having the same timing relationship as the second ringing signal and the caller information are transmitted.

In the above-described caller information transfer apparatus of the present invention, when the storage unit detects an incoming call from a subscriber who is receiving a caller information transfer service from the exchange,
It stores caller information sent between the ringing signal from the exchange and the following ringing signal.

[0013] The conversion means converts the caller information stored in the storage means into a format for wireless transmission. The wireless transmission means wirelessly transmits the caller information converted into the format for wireless transmission to the receiving slave station at a predetermined timing.

Thus, the slave station can reliably receive the caller information transmitted from the master station at an appropriate timing, and can correctly display the caller number on the subordinate terminal device.

In the above-described caller information transfer method of the present invention, caller information from the exchange is stored in the master station,
By converting this to a format for wireless transmission and wirelessly transmitting it to the slave station at a predetermined timing, the slave station side
Caller information can be reliably received at an appropriate timing, and a caller number display or the like can be correctly performed on a terminal device under the caller.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a caller information transfer apparatus and method according to the present invention.

FIG. 1 is an explanatory diagram showing an example of a communication sequence of the CND transfer system to which the present invention is applied.

In FIG. 1, when a subscriber receiving a CND service receives a call at the exchange, a first ringing signal (1st ringing) and a second ringing signal (2nd ringin) following the first ringing signal are received.
g), CND data by the FSK signal is transmitted between the two ringing signals.

After detecting the first ringing signal, the base station (master station) temporarily stores the FSK-modulated CND data as PCM data in the base station. After the completion of the storage, the base station transmits the PAGE to the slave station. Send a message.

The slave station that has received the PAGE message transmits the first ringing signal to the target telephone, and the time T
After setting the timing for receiving the FSK signal by 1 and returning a PAGE RSP (response) message from the slave station to the base station, a time T2 is set to measure the timing of issuing the second ringing signal.

PAGE transmitted from the slave station by the base station
Upon receiving the RSP message, a call path is established,
Using the communication path established at that timing, CND data is transmitted from the base station to the slave station based on the FSK signal stored previously. At this time, the FSK signal is transmitted by incorporating the FSK signal into a wireless transmission frame having a format described later.

The slave station receiving the CND data by the FSK signal causes the target telephone to flow the CND data by the FSK signal, thereby causing the telephone number to be displayed on the telephone. Thereafter, when the time T2 has elapsed, the slave station sends a second ringing signal to the target telephone.

FIG. 2 is a block diagram showing a configuration example of a wireless telephone service system to which the present invention is applied.

The base station 2 is connected to the exchange 1 via subscriber lines 6-1 to 6-m, and has a plurality of slave stations 3-1.
To 3-n for wireless communication. Each of the slave stations 3-1 to 3-n has antennas 9-1 to 9-n for performing wireless communication with the base station 2, and each of the slave stations 3-1 to 3-n has a subscriber line. 10-1 to 1
Telephones 11-1 to 11-n are connected via 0-n, respectively. The network side of the exchange 1 has a subscriber line 5
The telephone 4 is connected via the.

When the subscriber of the telephone set 4 receives the CND service, a call is made through the subscriber line 5, and the call signal enters the exchange 1, and the subscriber line between the exchange 1 and the base station 2, For example, it is detected as a ringing signal by the base station 2 through the subscriber line 6-m. The ringing signal is received from the antenna 7 on the base station 2 side via the antenna 8 which is a radio wave, from the antenna 9-n on the side of the slave station 3-n to the slave station 3-a, and in a state where a communication path is established, The FSK signal (CND data) is sent from the base station 2 to the slave station 3-n, and further passes through the subscriber line 10-n and the telephone set 11 under the slave station 3-n.
-N, the caller ID is displayed on the telephone 11-n.

FIG. 3 is an explanatory diagram showing a wireless frame in a wireless section of the wireless telephone service system shown in FIG.

A control channel 12 is used for exchanging messages for establishing a communication path between the base station 2 and the slave station 3-n,
The base station 2 detects an outgoing / incoming call and sets a free voice channel (voice channel) 13-x to the slave station 3-n.
To establish a communication path between the base station 2 and the slave station 3-n using the assigned voice channel 13-x,
The FSK signal (CND data) stored in the base station 2 through the communication path is sent to the slave station 3-n.

FIG. 4 is a time chart showing transmission / reception timing of CND data by the ringing signal and the FSK signal in the sequence shown in FIG.

In FIG. 4, when the sequence shown in FIG. 1 is executed, the first and second ringing signals 14A and 14B detected by the base station 1. and the FSK signal (CND data)
Reference numeral 15 indicates that each signal is reproduced at the same time interval in the slave station 3-n side 2.

The FSK signal 15 is the first ringing signal 1
4A and the second ringing signal 14B, the slave station 3-n 2. sets the times T1 and T2 so that the FSK signal (CND data) of the base station 2 side 1. As in the case, control is performed so as to enter between the first ringing signal and the second ringing signal at the same timing.

FIG. 5 is a block diagram showing the configuration of the base station 2, and FIG. 6 is a flowchart showing the operation of the base station 2. FIG. 7 is a block diagram showing the configuration of the slave station 3-n, and FIG. 8 is a flowchart showing the operation of the slave station 3-n.

In FIG. 5, base station 2 includes a ringing signal detecting section 16 for detecting a ringing signal from exchange 1.
A radio circuit unit 17 for performing various signal processing for radio communication, a control unit 18 for controlling each unit of the base station 2,
A storage section 19 for storing a K signal (CND data).

In FIG. 7, a slave station 3-n includes a radio circuit unit 20 for performing various signal processing for wireless communication and the like, and a slave station 3
-N, and a control unit 21 for controlling each part of
A receiving unit 22 for receiving a K signal (CND data).

Next, the operation of the base station 2 and the slave station 3-n will be described with reference to the flowcharts of FIGS.

First, in the incoming call waiting state at the base station 2 (step a1), there is an incoming call from the subscriber receiving the CND service from the network side, and the ringing signal detecting unit 16 detects the ringing signal (step a2). The control unit 18 recognizes this, and starts accumulating the FSK signal (CND data) in the accumulation unit 19 (step a3).

When the accumulation of the FSK signal is completed,
The control unit 18 recognizes this state, and transmits a PAGE message from the wireless circuit unit 17 to the slave station 3-n (step a).
4), the base station 2 enters a PAGE RSP waiting state (step a5).

When the slave station 3-n is waiting for a message from the base station 2 (master station) (step b1), the radio circuit unit 20 receives a PAGE message (step b).
2) In order to determine the timing at which the control unit 21 recognizes this and receives the FSK signal, a time T1 is set (step b3), and the first ringing sounds to the telephone 11-n connected to the slave station 3-n. A sound is made (step b4).

When it is determined that the time T1 has elapsed (step b5), a PAGERSP message is transmitted to the base station 2 (step b6), and the time T2 is set in order to take the timing to sound the second ringing. Is set (step b7).

On the other hand, as shown in FIG. 6, the base station 2 is in a state of waiting for a response message from the slave station 3-n (step a6), and when the radio circuit unit 17 receives the PAGE RSP message (step a7). The control unit 18 recognizes this, and stores the FSK signal (CN
D data) on the call path (step a8).
Thereafter, the state shifts to the incoming call in-call state (step a9).

On the side of the slave station 3-n, the FSK signal (CND data) is transmitted from the base station 2 to the radio circuit section 20 through the communication path.
Is transmitted by the control unit 21, the control unit 21 recognizes this, and the receiving unit 22 receives it.
n, the FSK signal (CND data) is transmitted, and the telephone 11-n that has received the FSK signal displays the calling party number (step b8). Then, it is determined whether or not the time T2 for taking the timing of the second ringing has timed out (step b9). If the time out for the time T2 has been determined, the telephone 11-n sounds the second ringing.

As described above, even in a system in which a base station and a slave station are connected by a wireless line, similarly to a system of a wired line, the FSK signal (CN) input from the exchange to the base station.
D data) can be transmitted to the slave station at an appropriate timing, and the telephone number connected to the slave station can correctly display the caller number.

Note that the FSK signal (CND) on the slave station side
The application of the data) is not limited to the display of the caller ID, but can be used for more multifunctional applications.

In the above example, the caller information is set to FSK
Although a system for transmitting signals has been described, the present invention may be applied to a system for transmitting caller information by another modulation method. The terminal on the slave station side is not limited to the telephone, but may be another communication terminal device.

[0044]

As described above, in the apparatus and method for transferring caller information according to the present invention, when an incoming call from a subscriber who receives a caller information transfer service from the switch is detected by the master station, the call is transmitted from the switch. The caller information sent between the ringing signal and the subsequent ringing signal is temporarily stored in the master station, and the caller information is wirelessly transmitted to the slave station at a predetermined timing. .

Therefore, according to the present invention, on the slave station side,
The caller information transmitted from the master station can be reliably received at an appropriate timing, and the caller number can be correctly displayed on the terminal device under the slave station.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a communication sequence example of a CND transfer method to which the present invention is applied.

FIG. 2 is a block diagram illustrating a configuration example of a wireless telephone service system to which the present invention has been applied.

FIG. 3 is an explanatory diagram showing a wireless frame in a wireless section of the wireless telephone service system shown in FIG. 2;

FIG. 4 is a time chart showing transmission / reception timing of CND data by a ringing signal and an FSK signal in the sequence shown in FIG. 1;

FIG. 5 is a block diagram showing a configuration of a base station in the wireless telephone service system shown in FIG.

FIG. 6 is a flowchart showing an operation of the base station shown in FIG.

7 is a block diagram showing a configuration of a slave station in the wireless telephone service system shown in FIG.

8 is a flowchart showing the operation of the slave station shown in FIG.

[Explanation of symbols]

1 ... Switch, 2 ... Base station, 3-1-3-n ... Slave station, 4, 11-1-11-n ... Telephone, 5, 6-1
6-m, 10-1 to 10-n ... subscriber lines 6-1 to 6-n
m, 7, 9-1 to 9-n ... antennas.

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04M 3/42 H04M 1/57 H04Q 3/58

Claims (6)

(57) [Claims] A base station connected to a communication line from an exchange, a plurality of slave stations, and a telephone connected to the slave station, wherein a multi-channel access system is provided between the base station and the slave station. A caller information transfer device for a system for setting up a wireless line according to claim 1, wherein the base station receives first and second ringing signals from the exchange and caller information between the signals, and Storage means for storing caller information, and wireless transmission means for transmitting the caller information to the slave station after establishing a call path with the slave station, wherein the slave station has a Control means for controlling transmission of the first and second ringing signals and caller information having the same timing relationship as the first and second ringing signals and caller information is provided. Caller information transfer device. 2. The caller information transfer device according to claim 1, wherein the telephone receives the caller information and displays a caller number. 3. The caller information transfer device according to claim 1, wherein said caller information is an FSK signal. 4. The caller information transfer device according to claim 1, wherein said storage means stores caller information from the exchange as PCM data. 5. The caller information transfer device according to claim 1, wherein the communication path is established by establishing transmission and reception of a PAGE message between the base station and a slave station. 6. A multi-channel access system comprising a base station connected to a communication line from an exchange, a plurality of slave stations, and a telephone connected to the slave station, wherein a multi-channel access system is provided between the base station and the slave station. A caller information transfer method for a system for setting up a radio line by using the base station receiving first and second ringing signals and caller information between the respective signals from the exchange, and Storing caller information, transmitting the caller information to the slave station after establishing a call path with the slave station,
The slave station has the same timing relationship with the telephone as the first and second ringing signals and caller information.
A method for transmitting caller information, comprising transmitting the first and second ringing signals and caller information.