JPH05167521A - Cordless telephone system - Google Patents

Abstract

PURPOSE:To expand an area by providing a table storing the relation between a subscriber number and a transfer destination in a trunk exchange system and providing a table storing the relation between a dial and an ID number for each slave set in a master set. CONSTITUTION:Suppose that a slave set 3Aa makes position registration in the area of a connector 2Lm not at a home position, then a master set 1L checks a table 21L to confirms that the slave set 3Aa is a slave set whose home position is not itself but the master set 1A. For example, a connector having an ID number corresponding to a dial number, e.g. DNLn+1 is updated into a 2Lm. The master set 1A updates a connector corresponding to the slave set 3Aa in a table 21A into 'none', the master set 1 into '1L' and its transfer destination into 'DNLn+1'. When a call comes by the dial number DNLn+1, the master set 1L uses the dial number DNLn+1 as a key to retrieve the table 21L, calls a slave set 3Aa through the connector 2Lm as a result to make connection with the reply of the slave set.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless telephone system, and more particularly to a connection area expansion system for a cordless telephone system.

In the conventional cordless telephone system, the range in which the position of the slave unit can be moved is limited to the service area (range within which the radio can reach) of this system. However, the miniaturization / weight reduction of the child device made it easier to carry the child device, and the range of movement was greatly expanded. Therefore, it has become necessary to connect between cordless telephone systems via a backbone switching system.

[0003]

2. Description of the Related Art FIG. 8 is a conceptual diagram of the configuration of a conventional system. As shown in the figure, the cordless telephone system includes a main device 1 that performs call control and movement management of a cordless handset (cordless portable device) and a wireless zone (which is a service area surrounded by a broken line in the figure). It is composed of a plurality of connection devices 2 to be constructed and a plurality of small handset devices 3 that communicate with the connection devices 2 in the wireless zone. Here, the connection device 2 is 2
The m up to ₁ to 2 _m, the sub-terminal 3 is provided n pieces of up to ₃ 1 to 3 _n. The main unit 1 is a concept including a PBX (Private Branch Exchange), a central control unit (CC), and a memory.

Reference numeral 4 is a table in which data indicating which slave unit 3 is connected to which connecting device 2 is stored. Each child machine 3 are each ID number _(ID 1 _{~ID n)} and has a dial number _(DN 1 _{~DN n),} the main apparatus the number of the connecting device 2 that accommodates these numbers and their sub-terminal 3 1
Is managed by the user, and the corresponding slave unit 3 is called when a dial number is received. FIG. 9 is a diagram showing a configuration example of the table 4. Dial number for each handset 3,
The relationship between the ID number and the connection device 2 is stored. A connection control operation at the time of movement of the child device 3 in the system configured as described above will be described.

Mr. A has a child device 3a, and performs location registration in the zone of the connection device 2a. At this time, the connection device 2a
The main device 1 is notified of the ID number IDa received from the child device 3a. The main device 1 changes the connection device portion of the table 4 from 2 ₁ up to then 2 a.

Here, when Mr. B dials the dial number "DNa" from the telephone 5, the main device 1 is given the table 4
With reference to, the connection device 2a is instructed to call the slave device with the ID number IDa. As a result, the child device 3a is called,
In response to Mr. A, main device 1 connects Mr. B and Mr. A,
Make a call.

Next, Mr. A holds the handset 3a and performs position registration in the zone of the connection device 2x. At this time, the connection device 2
x is the ID number IDa received from the handset 3a
To notify. The main device 1 changes the connecting device portion of the table 4 from the existing 2a to 2x. Here, when Mr. B dials the dial number "DNa" from the telephone 5, the main device 1 refers to the table 4 and instructs the connection device 2x to call the slave device with the ID number IDa. As a result, the child device 3a is called and the main device 1
Connects B and A to make a call.

[0008]

In the above-mentioned conventional system, the main unit 1 manages the correspondence of dial number / ID number / connecting device, and the connection is made only to the slave unit 3 within the area managed by the main unit 1. When the mobile device 3 moved to an area outside this service zone, the connection was impossible.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a cordless telephone system which can be connected to a handset even outside the area managed by the main unit.

[0010]

FIG. 1 is a block diagram showing the principle of the present invention. The same parts as those in FIG. 8 are designated by the same reference numerals. The figure constitutes a cordless telephone system including a backbone switching system 10 and a plurality of subsystems (behind systems) 20 connected to the backbone switching system 10. Although the subsystems A and L are shown as the subsystems 20 in the figure, the number of subsystems 20 is not limited to this.

The subsystem 20 includes the main unit 1 and the main unit 1.
A plurality of connection devices 2 connected to the main device 1 and these connections
Consists of device 2 and a plurality of cordless handsets 3 that communicate cordlessly
Has been done. In the figure, subsystem A and L are distinguished.
Therefore, each number is suffixed with A and L for distinction.
It The number of child devices 3 in subsystem A is 3A₁~ 3A _n
Up to n, the number of child devices 3 in the subsystem L is 3L₁
~ 3L_nUp to n. Also, for each subsystem
And the number of connecting devices 2 is 2A₁~ 2A_m, 2L ₁~ 2L
_mOf m.

In the backbone switching system 10, there is provided a first table 11 for storing the relationship between the subscriber number and the transfer destination.
In the main device 1, a dial number and an ID are provided for each child device 3.
A second table 21 that stores the numbers and the relationships with the connection devices
Is provided. The second table 21 is also distinguished by adding A and L after 21 in order to distinguish the subsystem A and the subsystem L.

[0013]

[Function] The core exchange system 10 includes each subsystem 20.
In response to a transfer request from the subsystem 2, the table 11 is referred to, a line is connected to a predetermined subsystem 20, and each subsystem 2
The main device 1 of 0 refers to the table 21 and connects the target slave device 3 and the connection device 2. In this way, according to the present invention, it is possible to provide a cordless telephone system that can be connected to a cordless handset even outside the area managed by the main device.

[0014]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 2 is a diagram showing an operation sequence of the first embodiment. Now, when Mr. A has the child device 3Aa whose home position is the main device 1A, moves to the service area of the main device 1L, performs position registration there, and then operates when Mr. B receives an incoming call from Mr. A. Will be explained. For convenience of explanation, the backbone exchange system 10 includes the slave unit 3 of the main device 1A.
It is assumed that the subscriber number xxxxx is assigned to Aa and the subscriber number yyyy is assigned as the transfer line of the main device 1L. Hereinafter, description will be given according to the sequence indicated by the arrow.

First, Mr. A holds the child device 3Aa and performs position registration in the service area of the main device 1L (S1). Next, the main device 1L performs variable absence transfer registration from the transfer destination so that the incoming call to the subscriber number xxxx is transferred to yyyy to the backbone switching system 10 (S2). Then B
Ms. A dials xxxx to call Ms. A (S3).

The backbone switching system 10 changes the xxxxxx to yyyy by the variable call forwarding service, and the main unit 1
A call is made to L (S4). Next, the main device 1L
Call the child device 3Aa (S5). The child device 3Aa responds to the main device 1L (S6). Next, the main device 1L responds to the backbone exchange system 10 (S7). As a result, the backbone exchange system 10 establishes a connection between Mr. B and Mr. A, and a call becomes possible (S8).

FIG. 3 is a diagram showing a configuration example of each table in the first embodiment. In the figure, in the backbone switching system 10, a variable absence transfer table 11 corresponding to a subscriber number / transfer destination is provided. Further, the main devices 1A to 1
L is provided with tables 21A to 21L corresponding to dial numbers / ID numbers / connecting devices.
The capacity of table 11 is for all subscribers (DNA _{1 to} DNA _{1
n + r} , DNB _{n + 1 to} DNL _{n + r} ), and the capacities of the tables 21A to 21L correspond to the number of all the slaves 3 (DNA _{1 to} DNA _n , DNB _{1 to} DNL _n ) and the incoming call line at the time of transfer. The number allocated to the subsystem 20 (for example, in the case of the table 21A, D
NA _{n + 1 to r} of DNA _{n + r} ). The area a in the figure shows the home position, the area b shows the transfer position, and the area c shows other subsystems.

[0018] Now, if the handset 3Aa has performed the location registration in the connection device 2A ₁ of the home position area, that the primary device 1A is a slave unit that the child machine 3Aa is self (1A) and the home position Recognize yourself and your table 2
The connection device 2 corresponding to the child device 3Aa in 1A is set to “2
Update it as A ₁ ″.

When a call is received from the backbone exchange system 10 to the main device 1A with the dial number "DNAa", the main device 1A searches the table 21A using the dial number "DNAa" as a key, and as a result, the connection device is connected. 2A ₁ calls the slave unit 3Aa, and connects with the response of the slave unit.

Next, the handset 3Aa is not in the home position.
Consider the case where the mobile device has moved to the area of the connection device 2Lm. This
If the location is registered in the area
The mobile device 3Aa refers to
Recognize that it is not the slave unit that is in the mu position.
Then, the transfer dial number DNL_{n + 1}~ DNL
_{n + r}Search for unassigned dialed numbers from within
For example, DNL_{n + 1}If is not used,
Dial number DNL_{n + 1}The ID number corresponding to
Aa ”and the connection device 2 are updated to“ 2Lm ”.

Subsequently, the main unit 1L is the backbone exchange system 1
For 0, as "variable absence transfer registration from transfer destination",
The transfer destination of the subscriber number “DNAa” is registered in “DNL _{n + 1} ”, and the backbone switching system 10 updates the table 11.

If there is an incoming call to the subscriber number DNAa in the backbone switching system 10, the table 11
And the subscriber number DNL of the main device 1L as the transfer destination.
_{Make an} incoming call to _{n + 1} . Main device 1L is dial number DN
When there is an incoming call at L _{n + 1} , dial number "DNL"
_The table 21L is searched using " _{n + 1} " as a key, and as a result, the cordless handset 3Aa is called from the connection device 2Lm, and connection is made according to the response of the cordless handset.

FIG. 4 is a diagram showing an operation sequence of the second embodiment. Now, when Mr. A has the child device 3Aa whose home position is the main device 1A, moves to the service area of the main device 1L, performs position registration there, and then operates when Mr. B receives an incoming call from Mr. A. Will be explained. For convenience of explanation, the backbone exchange system 10 includes the slave unit 3 of the main device 1A.
It is assumed that the subscriber number xxxxx is assigned to Aa and the subscriber number yyyy is assigned as the transfer line of the main device 1L. Hereinafter, description will be given according to the sequence indicated by the arrow.

Mr. A holds the slave unit 3Aa and uses the main unit 1L.
Location registration is performed in the service area (S1). Next, the main unit 1L requests the main unit 1A to transfer the incoming call to the slave unit 3Aa to the subscriber number yyyy (S).
2). The main device 1A is
The variable absence transfer registration from the transfer source is performed so that an incoming call to the subscriber number xxxx is transferred to yyyy (S3).

Next, Mr. B calls Mr. A by dialing xxxx (S4). The backbone switching system 10 changes the incoming call to xxxx to yyyy by the variable call forwarding service and calls the main device 1L (S5). The main device 1L calls the child device 3Aa (S
6). In response to this, the child device 3Aa responds to the main device 1L (S7). In response to this response, the main device 1L responds to the backbone switching system 10 (S8). Through the above sequence, the backbone exchange system 10 connects Mr. B and Mr. A, and communication becomes possible.

FIG. 5 is a diagram showing a configuration example of each table in the second embodiment. In the core exchange system 10,
Variable absence transfer table 11 for subscriber number / transfer destination
Is provided. The main devices 1A to 1L are provided with dial numbers / ID numbers / home position connecting devices / main devices / transfer destination tables 21A to 21L, respectively.

The capacity of the table 11 is for all subscribers (DN
A _{1 to} DNA _{n + r} , DNB _{n + 1 to} DNL _{n + r} ), and the capacity of each of the tables 21A to 21L is the number of all slave units 3 (DNA _{1 to} DNA _n , DNB _{1 to} DNB ₁ ).
L _n ), and the number assigned to the corresponding subsystem 20 as an incoming line at the time of transfer (for example, table 21A).
In the case of, it is the total of DNA _{n + 1 to} DNA _{n + r} ).

[0028] Now, if the handset 3Aa has performed the location registration in the connection device 2A ₁ of the home position area, that the primary device 1A is a slave unit that the child machine 3Aa is self (1A) and the home position Recognize yourself and table 2
Connect the connection device 2 corresponding to the child device 3Aa in 1A to “2A ₁ ”,
Update the main unit with "1A". From backbone switching system 10, when there is an incoming call at dial number "DnaA" to the main unit 1A, the main device 1A searches the table 21A as a key dial number "DnaA", As a result, the connection device 2A ₁ Yoriko The device 3Aa is called, and the connection is established by the response of the child device.

Next, when the slave unit 3Aa performs position registration in the area of the connection device 2Lm that is not in the home position,
The main device 1L recognizes from the table 21L that the child device 3Aa is not its own child device but the child device having the main device 1A as the home position. Next, dial number DNL
_An unassigned dial number is searched from _{n + 1 to} DNL _{n + r} . For example, when DNL _{n + 1} is unused, the I corresponding to the dial number DNL _{n + 1} in the table 21L is searched.
The D number is updated to "IDAa" and the connection device 2 is updated to "2Lm".

Subsequently, the main unit 1L notifies the main unit 1A that "the slave unit 3Aa has moved into the area of the main unit 1L and the incoming call to the DNAa will be forwarded to DNL _{n + 1} in the future". To do. In response to this, the main device 1A sets "none" for the connection device corresponding to the child device 3Aa in the table 21A, "1L" for the main device 1, and "DNL _{n + 1} " for the transfer destination.
And update.

Then, for the backbone exchange system 10,
Subscriber "D" as "variable call forwarding registration from transfer source"
The transfer destination of "NAa" is registered in "DN _{n + 1} ", and the backbone switching system 10 updates the transfer destination of the table 11.

Here, in the backbone exchange system 10,
When there is an incoming call to the subscriber number DNAa, Table 1
1 and searches as the transfer destination, the subscriber number DN of the main device 1L
Call L _{n +1} . Main device 1L is dial number D
When there is an incoming call at NL _{n + 1} , the dial number "DNL
_The table 21L is searched by using _{n + 1} "as a key. As a result, the cordless handset 3Aa is called from the connection device 2Lm, and a connection is made according to the response of the cordless handset.

FIG. 6 is a diagram showing an operation sequence of the third embodiment. Now, when Mr. A has the child device 3Aa whose home position is the main device 1A, moves to the service area of the main device 1L, performs position registration there, and then operates when Mr. B receives an incoming call from Mr. A. Will be explained. For convenience of explanation, the backbone exchange system 10 includes the slave unit 3 of the main device 1A.
It is assumed that the subscriber number xxxxx is assigned to Aa and the subscriber number yyyy is assigned as the transfer line of the main device 1L. Hereinafter, description will be given according to the sequence indicated by the arrow.

Now, Mr. A holds the slave unit 3Aa and the main unit 1
Location registration is performed in the L service area (S1). The main unit 1L requests the main unit 1A to transfer the incoming call to the slave unit 3Aa to the subscriber number yyyy (S).
2). Here, it is assumed that Mr. B calls Mr. A by dialing xxxxxx (S3). When the backbone switching system 10 receives this call, it calls the main device 1A (S4).

When the main unit 1A receives this call, it sends the call to the backbone switching system 10 by the subscriber number yyy.
Request to transfer to y (S5). This operation is called callback transfer. Core exchange system 10
Upon receipt of this callback transfer, makes a call request of the number yyyy to the main device 1L (S
6). The main device 1L calls the child device 3Aa (S7).

The handset 3Aa responds to this call (S8). Next, the main device 1L is the backbone exchange system 1
It responds to 0 (S9). In this way, the backbone exchange system 10 connects B and A (S1).
0). According to the sequence described above, Mr. A can always receive an incoming call with the subscriber number xxxx of the backbone switching system 10 even after moving to the service area of the main apparatus 1L.

FIG. 7 is a diagram showing a configuration example of each table in the third embodiment. In the third embodiment, the table 11 in the backbone exchange system 10 is not used. The main devices 1A to 1L are provided with 21A to 21L as tables corresponding to dial numbers / ID numbers / connection devices / home position main devices / transfer destinations, respectively. Table 2
The capacity of 1A to the table 21L is the number of all the child devices 3 (DN
A _{1 to} DNA _n , DNB _{1 to} DNL _n ) and the number assigned to the corresponding subsystem 20 as an incoming line at the time of transfer (for example, in the case of the table 21A, DNA
_n + 1 is the sum of the r) of ~DNA _{n + r.}

[0038] Now, if the handset 3Aa has performed the location registration in the connection device 2A ₁ of the home position area, that the primary device 1A is a slave unit that the child machine 3Aa is self (1A) and the home position Make your own table 2
The connection device 2 corresponding to the child device 3Aa in 1A is updated to “2A ₁ ”, and the main device is updated to “1A”.

Now, from the backbone exchange system 10, the main unit 1
If there is an incoming call to A with the dial number "DNAa",
The main unit 1A uses the dial number "DNAa" as a key
Search inside table 21A. By this search, "DNA
Connection device 2A corresponding to a " ₁Call the handset 3Aa
Then, the connection is made by the response of the child device.

It is assumed that the handset 3Aa has now registered its location in the area of the connection device 2Lm which is not at the home position. The main device 1L uses the table 21L to display the slave unit 3Aa.
Confirms that it is not the self (1L) but a slave having the main device 1A as the home position. Next, an unassigned dial number is searched from among the dial numbers DNL _{n + 1 to} DNL _{n + r} . And, for example, DNL
_{If n + 1} is unused, the ID number corresponding to the dial number DNL _{n + 1} in the table 21L is updated to "IDAa" and the connection device is updated to "2Lm".

Subsequently, the main unit 1L notifies the main unit 1A that "the slave unit 3Aa has moved into the area of the main unit 1L and an incoming call to the DNAa will be forwarded to the DNL _{n + 1} in the future". To do. When the main device 1A receives this notification, the connection device corresponding to the child device 3Aa in the table 21A is "none", the main device 1 is "1L", and the transfer destination is "DNL".
_{n + 1} "is updated.

When there is an incoming call to the subscriber number DNAa, the backbone exchange system 10 causes the main unit 1A to receive the incoming call. The main device 1A searches the table 21A, and the child device 3
Aa recognizes that he is moving to the area of the main device 1L. Then, this call is transferred to the subscriber number DNL _{n + 1} of the backbone switching system 10 by callback transfer.

The main unit 1L has a dial number DNL _{n + 1.}
If there is an incoming call at, dial number "DNL _{n + 1} "
The key is used as a key to search the table 21L, and as a result, the cordless handset 3Aa is called from the connection device 2Lm, and a connection is made in response to the cordless handset.

[0044]

As described above in detail, according to the present invention, the conventional functions of the backbone switching system (variable call forwarding / unattended transfer /
The cordless telephone system can extend the range of movement of the cordless telephone system's cordless handset to the area of other cordless telephone systems by using Callback Transfer, and can be connected to the cordless handset even outside the area managed by the main unit. Can be provided.

[Brief description of drawings]

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

FIG. 2 is a diagram showing an operation sequence of the first embodiment.

FIG. 3 is a diagram showing a configuration example of each table in the first embodiment.

FIG. 4 is a diagram showing an operation sequence of the second embodiment.

FIG. 5 is a diagram showing a configuration example of each table in the second embodiment.

FIG. 6 is a diagram showing an operation sequence of the third embodiment.

FIG. 7 is a diagram showing a configuration example of each table in the third embodiment.

FIG. 8 is a conceptual diagram of a configuration of a conventional system.

FIG. 9 is a diagram showing a configuration example of a table.

[Explanation of Codes] 1 main device 2 connection device 3 slave unit 10 backbone switching system 11 table 20 subsystem 21 table

Claims (4)

[Claims] 1. A cordless telephone system comprising a backbone switching system (10) and a plurality of subsystems (20) connected to the backbone switching system (10), wherein the subsystem (20) is a main unit. The device (1), a plurality of connecting devices (2) connected to the main device (1), and a plurality of cordless handsets (3) communicating with these connecting devices (2) in a cordless manner, A table (11) for storing a relationship between a subscriber number and a transfer destination is provided in the backbone exchange system (10), and a dial number and an ID number are provided for each slave unit (3) in the main device (1). , A cordless telephone system characterized in that a table (21) for storing the relationship with the connection device is provided respectively. 2. When the slave unit (3) moves across a plurality of subsystems (20), when the slave unit (3) performs location registration at the move destination, the move destination subsystem (20) is a backbone exchange system (10)
By registering the variable call transfer to the mobile device (3), the backbone switching system (10) transfers the mobile device to the destination subsystem (20) when the mobile device (3) receives an incoming call to the mobile device (3). The cordless telephone system according to claim 1, wherein connection is possible. 3. When the slave unit (3) moves across a plurality of subsystems (20), registration of variable call forwarding is performed on the destination subsystem (20).
Notifies the home position subsystem (20) of the slave unit (3), and the home position subsystem (20) registers variable call forwarding so that when the call arrives at the slave unit (3). The cordless telephone system according to claim 1, wherein the backbone switching system (10) transfers the data to a subsystem (20) at a destination and enables connection to the slave unit (3). 4. When the slave unit (3) moves across a plurality of subsystems (20), the subsystem at the home position (20) notified by the destination subsystem (20) is the backbone. 2. The cordless telephone system according to claim 1, wherein the cordless telephone system is capable of connecting to the slave unit (3) by performing a callback transfer when an incoming call is received from the exchange system to the slave unit (3).