JPS63285027A - Wide area cordless telephone system - Google Patents

Abstract

PURPOSE:To use a radio telephone set even in other service area by allowing a radio line control unit (RCU) of each system to allocate an extension terminal not assigned yet among shared extension terminals to a radio telephone set (RTEL) to be registered not belonging to its own system. CONSTITUTION:Assuming the RTEL 1A moves from the service area of a system B to the service area of a system C and applies zone registration, the RCU of the system C (hereinafter referred to as RCU 3) registers the RTEL 1A, allocates an extension to the RTEL 1A and informs the registration of the RTEL 1A and the assigned extension number to a home RCU 3A. In receiving the notice, the home RCU 3A instructs the release of registration to the RCU 3B and the RCU 3B releases the extension assigned to the RTEL 1A. Thus, the RTEL can be used even when it belongs to a service area different from that belonging to the RTEL 1A.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wide area cordless telephone system, and particularly to a wide area cordless telephone system in which there are a plurality of systems each handling a large number of wireless telephones.

[Conventional technology]

A telephone line is wirelessly connected to a portable wireless telephone (hereinafter referred to as R'1'E L) via a wireless connection device (hereinafter referred to as CE), so that calls can be made without location restrictions within the range around the CE. A wide-area cordless telephone system has been proposed in which a large number of R stations can each be used as one of the telephones in a wide area (service area) such as a workplace.

In such a wide area cordless telephone system, a large number of CEs are distributed and installed within the service area of one system, and each CE is shared by each R location. For this shared use, one radio line control unit (hereinafter referred to as CU) is installed between each CE and the exchange.
intervene.

The RC[J constantly registers and updates the location information of which R, which belongs to the system, is currently within the surrounding range (wireless zone) of which CE, and when a call is made or received by a certain R, When making a call, R'l'EI, C of the radio zone in which it is currently located.
Connect E to the extension terminal corresponding to that RT E L on the exchange.

Business entities with multiple workplaces will operate multiple such systems.

[Problem that the invention seeks to solve]

However, in conventional wide-area cordless telephone systems, the RCU cannot handle the R and L belonging to its own system, so if the R unit moves from the service area of the system to which it belongs to another service area, the RCU cannot handle the R and L belonging to its own system. The drawback is that it becomes unusable.

This drawback is particularly problematic when the service areas of the two systems are close to each other and the R locations often move between the service areas.

An object of the present invention is to provide a wide area cordless telephone system that can be used even in a service area different from the service area of the system to which kL'J'EL belongs.

[Means for solving problems]

The wide area cordless telephone system of the present invention is provided with a system number indicating which of a plurality of systems it belongs to and a unique number within the system. , a plurality of wireless connection devices that are distributed and installed within each service area of the system to create a wireless zone, and that can wirelessly connect with the wireless telephones located within the wireless zone, and one of the systems or a plurality of the systems. The first
It is installed in each of the above-mentioned systems as an additional device of the exchange having an extension terminal and a second extension terminal to which no one-to-one assignment is made, and stores the corresponding own system (the above-mentioned system in an affiliated relationship). registers the location information of each of the wireless telephones that belong to the system or the systems in the affiliated relationship and are currently within the service area of the local system, and registers the location information of which wireless zone the wireless telephone is in; Allocating the unallocated second extension terminal to each of the wireless telephones registered without belonging, and connecting the first or second extension terminal of the exchange and the extension terminal of the wireless connection device based on the location information. By managing connections between the wireless telephones that do not belong to the local system and mutually sharing information on registration or deregistration of the wireless telephones that do not belong to the local system, each of the wireless telephones that belong to the local system is currently registered in which system. and a radio line control device that centrally manages information on whether the

〔Example〕

The present invention will be described in detail below with reference to drawings showing embodiments.

FIG. 1 is a block diagram showing an embodiment of the wide area cordless telephone system of the present invention.

The embodiment shown in FIG. 1 is systems A, B, C, D...
... (C and subsequent parts are not shown).

! 1B is the boundary line between the service areas of systems A and H.

System A is connected to multiple devices IA belonging to its own system, to multiple CE2As installed scattered within its own system's service area, and to CE2A through multiple connection lines L1 that correspond one-to-one to each CE2A. 9 RCU3A and PBX4 connected to R, CU3A with multiple extension L2
A. A plurality of office lines L3 are connected to the PBX 4A.

The configuration of system B is also the same as the configuration of the system. Reference number I for system ABO equipment, CE, RCU, PBX
B, 2B, 3B, and 4B are attached.

The configurations of systems C, D, . . . are the same as those of systems A and H. Note that, as shown in FIG. 1, when the service zones of systems A and B are adjacent to each other, the PBXs 4A and 4B may be one PBX.

In system A, the RCU 3A determines which R location IA is located by the location registration action or call origination from the device IA currently within the service area of its own system, or by the location registration action of the R location tA in response to polling from the CU 3A. Location information indicating which CE2A's wireless zone it is in is updated. Connection control signals such as location registration signals and call request signals are wirelessly transmitted between each R station and the CE via a control channel. Each R location is given a system number indicating the system to which it belongs and a unique number within the system.Since these numbers are included in the location registration signal 1 call request signal, these signals are sent to the highest It is determined that R'l'ELxA, which transmitted the signal, is within the radio zone of CE2A which received the signal at the level.

There are multiple communication channels for wirelessly transmitting communication signals between each RTBL and CE, which are shared by each RTBL and CE.For this purpose, each R'I'EL has a multi-channel access function. There is.

When calling or receiving a call from 几'1'ELIA, R, CL1
3A refers to the location information and connects the connection line L1 from CE2A of the wireless zone where the device IA is currently located to the device IA.
Connect to extension L2 corresponding to . At this time, CE2A selects one of the call channels that is currently available, and transmits the selected call channel to R'l via the control channel.
``ELIA is notified, CE2A, R and IA are set to the call channel, and the call begins.

As explained above, the R-based IA can make and receive calls within the service area of system A.

Currently, CH2 wireless sea yZs, which is one of the CE2A
Assume that there is an internal KR station 6 (indicated by a dotted line frame) and a location registration operation is performed.As mentioned above, the RCU3A locates the R station 6 in the wireless zone Z5. register.

Next, the R station 6 moves as indicated by the arrow and moves to the wireless zone Z7 of the system B (the position after the movement is shown in a solid line frame), and performs a position registration operation. Further, it is assumed that systems A and B are in a mutually affiliated relationship. RC (J3A, 3
B remembers this partnership. In this case, 几C[J
3B registers the location of device 6 in wireless zone Z7. P.B.
Extension L2 of X4B has a shared extension that is not assigned to any R IB (each PBX has a shared extension as well), and when RCLJ3B registers the location of R, '1' EL6, it is unassigned. Assign the extension of CU3A (
几'1' E L 6's home 几CLI) Go to 几'1'
Notify that EL6 has been registered and the extension number assigned to R1゛EL6. By this notification, 几C(J
3A knows in which system the R-based IA that belongs to its own system but is not within the service area of its own system is currently registered, and provides information on which system all R-based IAs are currently registered. Manage centrally.

By being registered with RC03B, R station 6 can make calls within the service area of system B. In response to an incoming call to R station 6, if CU3A notifies the calling party that it is registered in system B of K'1'EL6, or automatically transfers the incoming call to PBX4B, R
, T16, it is also possible to receive calls within the service area of System B.

FIG. 2 is an explanatory diagram schematically showing the above-mentioned movement of R'l'Eh. In FIG. 2, it is assumed that system C is also in a cooperative relationship with systems A and B.

FIG. 2 (aJ represents R, 'll' ELIA has moved from the service area of system A to the service area of system B, and the operation of the embodiment shown in FIG. 1 in this case has been described above.

Next, R'l:L I A moves from the service area of system B to the service area of system C.
b)) Suppose that a location registration operation is performed. The RCLI of system C (I will also be called CU3C) is 几'L
'Register ELIA and assign extension to RTtA.

RTIA registration and assigned extension number to Home RC
Notify U3A. When you receive this notification, home ftcU
3A instructs tc03B to cancel the registration, and in response to this instruction, RCLI3B releases the extensions assigned to Ll and IA.

Then, RTIA returns from the system C service area to the system A service area (#) (Figure 2 fcJ >
, when the location registration operation is performed, the home R, CU3A is RC (
Instruct J3C to cancel the registration, and in accordance with this instruction,
C releases the extension assigned to the device and IA.

〔Effect of the invention〕

As explained in detail above, in the wide area cordless telephone system of the present invention, the RCU of each system is an RCU that belongs to its own system and is within the service area of its own system.
Not only L, but also R, who belongs to the affiliated system,
The location is also registered within the service area of the own system, but it is registered without belonging to the own system, and all unallocated extension terminals among the shared extension terminals are assigned to 9 R'l' E L. , 几'l' EL has the effect that it can be used not only in the service area of the system to which it belongs, but also in other service areas, and information on the registration or deregistration of RTs that do not belong to the own system can be mutually shared. By doing so, LC (J centrally manages the current registration location of each RT that belongs to its own system, so if it belongs to its own system and is currently in the service area of its own system) This eliminates the need for unnecessary connection operations in response to incoming calls to RT Els that are not available, and also allows the calling party of such incoming calls to be informed of the current registered location of that R'l'EL, and to automatically initiate calls. It also has the effect of being able to be transferred.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the wide area cordless telephone system of the present invention, and FIG. 2 is an explanatory diagram showing the movement of RT in the embodiment shown in FIG. IA, IB...l(, location (wireless telephone), 2A
. 2B...CE (wireless connection device), 3A, 3B.
...1'LCU (radio line control unit), 4A, 4
B...PBX (private branch exchange), A, B...
...System, Ll... Connection line, L2...
・・Extension line, L3・・・・Station line, Z5+z7・・・・
...Wireless zone. Agent Patent Attorney Susumu Uchihara 1\,

Claims (1)

[Scope of Claims] A plurality of portable wireless telephones each having a multi-channel access function and each having a system number indicating which of a plurality of systems it belongs to and a unique number within the system; A plurality of wireless connection devices that are distributed and installed within each service area to create a wireless zone and that can wirelessly connect with the wireless telephones located within the wireless zone, and that belong to each of the one system or the plurality of systems. installed in each of the systems as an additional device of an exchange having a first extension terminal assigned one-to-one to each of the wireless telephones and a second extension terminal not assigned one-to-one; It remembers the systems that have a partnership relationship with the corresponding own system,
For each of the wireless telephones that belong to the own system or the affiliated system and are currently within the service area of the own system, position information indicating which wireless zone it is in is registered, and the position information of each of the wireless telephones belonging to the own system is registered. The unallocated second extension terminal is assigned to each of the registered wireless telephones, and the first or second extension terminal of the exchange and the extension terminal of the wireless connection device are connected based on the location information. By managing connections and mutually exchanging information on registration or deregistration of the wireless telephones that do not belong to the own system, it is possible to determine in which system each of the wireless telephones belonging to the own system is currently registered. A wide area cordless telephone system characterized by being equipped with a wireless line control device that centrally manages information.