MXPA97003325A

MXPA97003325A - Telecomunicac network

Info

Publication number: MXPA97003325A
Application number: MXPA/A/1997/003325A
Authority: MX
Inventors: Yngve Persson Bengt; E Son Akerberg Dag; Krister Raith Alex
Original assignee: Telefonaktiebolaget Lm Ericsson
Priority date: 1994-11-25
Filing date: 1997-05-07
Publication date: 1997-12-01

Abstract

The invention relates to a communication method and a combination of a switched telecommunication network connected to the network, a first private exchange connected to the automatic public telephone network or a residential equipment for a subscriber, a second private connected to the network automatic telephone public or a residential equipment for a subscriber, possibly also a telepoint, and a portable radio terminal that is part of a residential equipment or an extension to a private exchange connected to the automatic public telephone network, the portable radio terminal when is served by a radio transceiver that is not a residential transceiver or central telephone radio using the private contralilla connected to the public telephone network or the telepoint and the network to call its residential base radio station or private exchange connected to the public telephone network and reports having given service to the central pr ivada connected to the public telephone network or telepoint or a temporary number to a location store, calls to the portable radio terminal then being transferred through the residential equipment or the private exchange connected to the telephone network through the network to the central private network connected to the public telephone network or telepoint in accordance with the information in the location store, whereby the portable radio terminal can call and be called through the network and the private exchange or telepun

Description

"TELECOMMUNICATION NETWORK" FIELD OF THE INVENTION This invention relates to the technical field of telecommunication. More precisely, the invention relates to a combination comprising a switched telecommunication network, a first private exchange connected to the public telephone network or a subscriber's residential equipment connected to the network, a second private exchange connected to the public network or a residential equipment of the subscriber connected to the network, a portable radio terminal possibly also a telepoint connected to the switched telecommunication network. The invention also relates to calls to this combination.

BACKGROUND OF THE INVENTION Many public switched telecommunication networks, PSTN, are in use. The recent switched telecommunication networks are based on digital technology and are designed to be capable of transmitting various kinds of information at different speeds, v.gr, audible or data or video.

The public switched telecommunication networks, PSTN, usually comprise warehouses of the network subscriber to store the different information about subscribers to the network, eg, identification, type, subscribed services, location or dispatch, etc. Public switched telecommunication networks usually also comprise means for connecting the subscriber's equipment to the network, and a means for establishing calls to and from the equipment of the connected subscriber in accordance with the information in the subscriber's store of the network. This means may include telephone exchanges interconnected by main lines. When a public switched telecommunication network, PSTN, comprises remote local or transit multiple telephone exchanges, there may be network subscriber stores in all local telephone exchanges that have assigned subscribers. Some subscribers to the telecommunication network can be residential subscribers who have a residential equipment connected by cables with a local telephone exchange of the network. Some residential subscriber equipment comprises a residential base radio station connected to the network by cable and a cordless telephone or a portable radio terminal. The residential base radio station then comprises a residential radio transceiver for radio communication with the portable radio terminal or the cordless telephone, constituting part of the same residential equipment of the subscriber. This class of residential subscriber equipment offers a user the freedom to make calls and receive calls anywhere in their residence, if they are within the range of their residential radio transceiver. Other subscribers to a switched telecommunication network can be business subscribers. The subscriber's equipment can then be a private switchboard connected to the public telephone public network, PABX, connected by cable to the telecommunication network and terminals or multiple telephones that constitute extensions for the private exchange connected to the public telephone network. Recently, the private branch exchanges connected to the public telephone network, PABX, comprising a means for radio communication with associated PBX extensions have been suggested. The private exchange connected to the public telephone public network, PABX, can then comprise a telephone exchange switch connected by cable to a telecommunication network, telephone station radio transceivers connected by cable to the switchboard of the telephone exchange and radio terminals portable or wireless telephones for radio communication with the radio transceivers of the telephone exchange. This kind of subscriber equipment can offer staff the freedom to make calls and receive calls anywhere in a subscriber's business area, if it is within the reach of any of the telephone station's transceivers. The North American Patent Number 4, 893,335 issued to Fuller et al., Discloses a remote access telephone control system wherein the intelligence of a central office is used to send calls to an absent portable radio terminal placed near a transceiver other than the transceiver with the which is normally associated. However, Fuller's invention suffers from the inconvenience that central intelligence is required to send the call. Many mobile radio communication systems of different classes have been suggested and are in use for various purposes. Cellular mobile radio communication systems can cover a very large geographical area offering a user, with a mobile station, a possibility to make calls in the office, in residential areas and in certain vehicles. A disadvantage of some of the mobile communication systems is the high cost, the weight and the size of the mobile stations, the high charge of the operators to become a subscriber and the high charge for a call in comparison with the corresponding costs for a subscriber using a terminal connected by cable to a fixed telecommunication network. Another type of subscriber equipment, telepoint, has been suggested as a compromise between low costs and little ease of fixed telecommunication equipment and the high cost and ease of cellular mobile radio communication systems. The telepoint concept offers users the possibility of lightweight portable radio terminals energized by batteries to be called anywhere through any fixed telepoint radio transceiver. The telepoint radio transceivers can be placed in various places such as railway or subway stations, airports, pedestrian areas, squares, official buildings, etc. They are connected by cable to a switched telecommunication network. The concept of telepoint requires a comparatively small energy consumption in the terminals of the portable radio, which avoids the frequent change of batteries. The information in the UK telepoint standard can be found in "MKPT 1375, COMMON AIR INTERFACE SPECIFICATION", DEPARTMENT OF COMMERCE OR INDUSTRY, LONDON, 1989.

A major disadvantage of the suggested telepoint systems is that a subscriber in the vicinity of a telepoint transceiver can not be called by another subscriber to the telecommunication network to which the telepoint transceiver is connected. Therefore, a user of a radio terminal for telepoints can make calls but not receive calls. For those skilled in the art, the following patents may serve as an additional background for the invention: U.S. Patent Number 3,906,166, U.S. Patent Number 4,658,416, U.S. Patent Number 4,748,655, U.S. Patent Number 4,829,554, U.S. Patent Number 2,046,556, and Patent of the Great Britain Number 2,216 319.

COMPENDIUM OF THE INVENTION An object of the present invention is to provide means and methods that allow a subscriber to a switched telecommunication network with a portable radio terminal that is part of a residential equipment or that constitutes in extension to the private switchboard connected to the public telephone network connected to the telecommunication network to use its portable radio terminal both to make calls and to receive calls at any private exchange connected to the public telephone network or to a telepoint connected to the telecommunication system. Another object of the present invention is to provide a means and methods for a roaming function between the different classes of equipment of the subscriber connected to a public switched telecommunication network, without introducing new procedures or means into the switched telecommunication network. The present invention can redirect calls without using the intelligence peculiarities of a PSTN exchange, thus eliminating the need for costly and delayed modifications of existing PSTN systems that may not have the central intelligence to provide the necessary information. address of the calls. Still another object of the present invention is to provide means and methods that allow the initiation of call in both ways in telepoints connected with a telecommunication network. In accordance with the invention, the existing network subscriber stores in a telecommunication network and / or the new location warehouses in private exchanges connected to the public telephone network or residential base radio stations and / or call transfer stores they can be used to keep track of the portable subscriber's radio terminals that constitute extensions to the private branch exchanges connected to the public telephone network or part of the residential equipment. In accordance with a first embodiment of the invention, a terminal of a residential equipment of the subscriber in a telecommunication combination may comprise a means for scanning radio channels used by the residential radio transceiver or the radio transceiver of the telephone exchange or telepoint radio transceiver, a means for receiving radio signals during scanning determines the information of the received radio signals on the identity of the transceiver that transmits, if any, a means for selecting as a transceiver serving a transceiver of appropriate received radio signals, if any, and a means for calling, through a telepoint transceiver or a private exchange transceiver connected to the public telephone network, the residential base radio station being part thereof Subscriber's equipment or network subscriber's store and making the location store known the residential radio or the subscriber's store of the network the identity of the serving radio transceiver, when the serving radio transceiver is other than the residential radio transceiver that is part of the same residential equipment of the subscriber. The identity disclosed may comprise a number of subscribers of the singular network for the serving transceiver or the private exchange connected to the corresponding public telephone network or to the controller of the telepoint transceiver or corresponding network information. In accordance with a second embodiment of the invention, a portable radio terminal that constitutes an extension to a private exchange connected to the public telephone network in a telecommunication combination may comprise a means for scanning radio channels used by the radio transceiver of the telephone exchange, or a transceiver of a telepoint radio, a means for receiving radio signals during scanning and determining from the received radio signals information on the identity of the transceiver transmitting, if any, a means for selecting as a serving transceiver, a transceiver of appropriate received radio signals, if any, and a means to call, through a telepoint transceiver or a private branch exchange connected to the public telephone network, the private branch exchange connected to the public telephone network for which the portable radio terminal constitutes an extension or a store of network call transfer and disclosing to the location store of the telephone exchange or the call transfer store of the network the identity of the serving radio transceiver when it is another one that is not one of the telephone station radio transceivers that constitutes part of the same private switchboard connected to the public telephone network. When not all terminals are authorized to use the transceivers of any private exchange connected to the public telephone network or telepoint, etc., the transceivers transmit the information in the system or the private exchange connected to the public telephone network or the telepoint to which The terminal comprises a means for determining the identity of the system or of the private exchange connected to the public telephone network or telepoint to check the right of the identified unit to give access to the system before selecting a transmitter as a serving transmitter. The identity disclosed may comprise a subscriber number of the singular network for the serving transceiver or the private exchange connected to the corresponding public telephone network or to the controller of the telepoint transceiver or corresponding network information. According to the invention, the switched telecommunication network establishes a call to a subscriber in accordance with the subscriber's information in the network subscriber's store or the call transfer store and these calls to an absent portable device can go back to the network in accordance with the information given to the location stores of the subscriber's equipment. According to the invention, a residential base radio station that receives a call to the portable radio terminal that is part of the same equipment of the subscriber and that has disclosed to the residential location store a radio transmitter that provides service that does not be that of the same subscriber equipment, can redirect the call to the linked switchboard connected to the public telephone network or to the telepoint that comprises the serving radio transceiver. According to the invention, a private switchboard connected to the public telephone network, which receives a call to a portable radio terminal that constitutes an extension to the private switchboard connected to the public telephone network and that has reported the central location warehouse telephone a radio transceiver that provides service other than that of the radio transceivers of the telephone exchange of the same private branch exchange connected to the public telephone network, can re-digest the call to the telepoint or to the residential equipment comprising the transceiver of radio that gives selected service. In accordance with a preferred embodiment of the invention, the multiple telepoint radio transceivers are connected to the switched telecommunication network via a telepoint transceiver controller.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 illustrates a public switched telecommunication network and several classes of subscriber equipment connected to a public switched telecommunication network. Figure 2 illustrates a residential subscriber's equipment connected to a public switched telecommunication network. Figure 3 illustrates a private switchboard connected to the public telephone network with extensions connected to a public switched telecommunication network. Figure 4 illustrates a telepoint radio station connected to a public switched telecommunication network.

Figure 5 illustrates a telepoint transceiver controller connected to a public switched telecommunication network and multiple telepoint radio transceivers connected to the telepoint transceiver controller. Figure 6 illustrates a portable radio terminal. Figure 7 illustrates a telepoint transceiver controller according to another embodiment of the present invention. Figure 8 illustrates another embodiment of a residential radio base station according to the present invention. Figure 9 illustrates another embodiment of a private switchboard connected to the automatic telephone public network according to the present invention. Figure 10 illustrates a public switched telecommunication network and various kinds of equipment of the subscriber connected to the public switched telecommunication network according to another embodiment of the present invention. Figure 11 is a flow chart illustrating a method for establishing a call in accordance with a preferred embodiment of the present invention. Figure 12 is a flow chart illustrating a method for handling a call placed in a portable radio terminal according to a preferred embodiment of the present invention. Figure 13 is a flow chart illustrating a method for keeping active temporary extension numbers according to a preferred embodiment of the present invention. Figure 14 illustrates the redirection of a call according to a preferred embodiment of the invention.

DETAILED DESCRIPTION OF THE PREFERRED MODALITIES Figure 1 illustrates a public switched telecommunication network, PSTN, and various kinds of subscriber equipment connected to the network. The network includes local network telephone exchanges, LNX1 to LNX8, to which the subscriber's equipment can be connected by means of cables, network transit telephone exchanges, TNX1 and TNX2, to switch calls, and main lines of the NT network, for interconnection of the local and transit telephone exchanges. The local and transit telephone exchanges may comprise multiplexers, demultiplexers, processors, warehouses as well as other usual network means. In particular, the network also comprises at least one subscriber store of the network for storing information about subscribers to the network. Each local telephone exchange may comprise a subscriber store of the network, NSS, for information on the subscribers assigned to that local telephone exchange, in particular subscribers having a subscriber's equipment connected to that local telephone exchange via cables. Conventionally, the information in the subscriber stores of the network comprises numbers of the subscriber of the network. The telephone exchanges of the network also include stores of information of the network, NIS, to store the information in the network, in particular the information on main lines to other telephone exchanges, numbers, shipments, etc. training the processors of the telephone exchange to establish calls to and from subscribers and disconnect calls. Local telephone exchanges may also comprise means for transferring calls from one subscriber to another subscriber. These media can use the subscriber stores of the network or have separate stores. A preferred embodiment of the present invention will now be described. It will be understood that the invention can be implemented in a network with two or more of any of the various subscriber equipment described. Eleven residential subscriber equipment, RSQ1 to RSQ11, are connected by cables to the local telephone exchanges LNX1 to LNX5 and LNX8 of the network. Five private switchboards connected to the public telephone network, PABXl to PABX5, are connected by cables to the local telephone exchanges LNX2 and LNX5 to LNX8 of the network. Five telepoint radio stations, TSN1 to TSN5, are connected by cables to the local telephone exchanges LNX4 and LNX5 and LNX7 of the network. Three telepoint transceiver controllers, TTC1 to TTC3, are connected via cables to the local telephone exchanges LNX3 and LNX6 and LNX8 of the network. At least in certain aspects, RSQ, PABX, TSN and TTC can be considered as several classes of subscriber equipment connected to PSTN. The NSS stores of the subscriber of the local telephone entry network comprise the information about the subscribers that the equipment connected to them has. In particular, the stores may include information on the type of subscription, v.gr;, residential or business or telepoint, the type of equipment connected, v.gr, RSTQ or PABX or TSN or TTC, and the number of lines or bandwidth connected to the network, eg, a single line analogue, the 64 kbit digital line, the 1 Mbit digital line, etc. For purposes of implementation of the invention, only the information normally included in a conventional NSS is necessary because the network does not need to know a terminal is connected to the network through wires or radio link and can therefore be used in both cases, the same type of numbers of the subscriber of the network. Figure 2 illustrates a class of residential subscriber equipment of specific interest to this invention, connected to a PSTN. The residential equipment, RSQ, comprises a residential base radio station, RBS, connected to the PSTN by cable, and a portable residential radio terminal PRT. The residential base radio station comprises a residential location store RLS, for storing information in the portable radio terminal and a residential radio transceiver, RTR, for radio communication with the radio terminal • laptop. When a subscriber uses his residential portable radio terminal at his residence, the portable radio terminal and the residential radio transceiver can operate in a known manner by transmitting radio signals when a call is established, during a call in progress and when given by finished a call. For the user, the portable radio terminal and the residential radio transceiver may then appear to function essentially in accordance with known residential wireless telephones. When a subscriber uses or has used his portable radio terminal distant from his residence but in proximity to another radio transceiver, the portable radio terminal and the residential radio transceiver may nevertheless operate somewhat differently, which will be described later . Figure 3 illustrates a private switchboard connected to the public telephone public network, PABX, of specific interest for this invention, connected to a PSTN by cable and portable telephone exchange radio terminals, PRT, which constitute extensions for the PABX. Even though it has not been illustrated, the PABX can of course also have conventional fixed terminals, WT, connected by wires. For the purpose of dialing a number directly, all extensions of the private branch exchange connected to the public telephone network can have their own subscriber numbers of the complete network of the same class. The PABX comprises a switchboard of the telephone exchange, XSW, a location store of the XLS telephone exchange, for storing information about the portable radio terminals as well as the fixed terminals that constitute extensions to the PABX, a telephone exchange processor, XCP, and telephone exchange radio transceivers, XTR, connected to the switchboard of the telephone exchange via cables. The radio transceivers of the telephone exchange are preferably multiple channel transceivers. The radio transceivers of the telephone exchange are placed in several places in the business area of the PABX subscriber for radio communication with the portable radio terminals which constitute extensions. When a call is made to or from a nearby portable radio terminal, during a call in progress involving a portable radio terminal nearby and when this call is terminated, a radio transceiver in the telephone exchange transmits radio signals to the terminal of the radio. portable radio and receives radio signals from the portable radio terminal in a manner similar to that already known in connection with cellular mobile radio systems. The PABX and portable radio terminals cooperate to allow the portable radio terminal to roam and deliver within the area protected by the radio transceivers of the telephone exchange. The radio communication between the portable terminals of the telephone exchange and the transceivers of the telephone exchange can incorporate known dynamic channel assignment procedures and the known procedures of roaming and delivery appropriate in relation to the dynamic channel assignment, wherein the Procedures related to the decision on the selection of the transceiver to provide service and the channel and delivery, is taken by the portable terminal. The PSTN is not involved in channel selection, roaming or delivery for a portable radio terminal which is serviced by a radio transceiver of the PABX telephone exchange. Figure 4 illustrates a telepoint radio station TSN, connected by a cable to the PSTN. The telepoint radio station comprises a telepoint network interface, TNI, a telepoint store, TS, a TPC telepoint processor, and a multi-channel telepoint radio transceiver, TTR. The telepoint radio transceiver can be similar to a telephone center radio transceiver. When a call is established or terminated from a nearby portable radio terminal, the telepoint radio transceiver and the rest of the telepoint radio station can cooperate with each other and with the PSTN in accordance with all well-known telepoint procedures. The telepoint radio transceiver and the rest of the telepoint radio station however, may also cooperate with the PSTN by establishing a call from the PSTN with a portable radio terminal nearby in a manner to be described below. For the purpose of sending the network, the PSTN takes into account the TSN as the equivalent of any single-line subscriber equipment or any multi-line PABX.

Figure 5 illustrates a telepoint transceiver controller, TTC, connected to a PSTN via cable and controlling the TTR multi-point radio transceivers, connected to a telepoint transducer controller via cables. The telepoint transceiver controller comprises a network controller interface, TNI, a telepoint controller store, TCS, and a telepoint processor, TPC. Each telepoint radio transceiver connected to the transceiver may be similar to the radio transceiver of a telepoint station in accordance with Figure 4. When the call is terminated or terminated from the portable radio terminal, in proximity to one of the telepoint radio transceivers connected to the transceiver controller, the portable radio terminal, the telepoint transceiver and the controller can cooperate with the PSTN in accordance with well-known telepoint procedures. The telepoint transceiver controller, the telepoint radio transceivers and the portable radio terminals cooperate to allow the portable radio terminal to wander and deliver when it is within the area protected by the radio transceivers connected by cables with the same controller of the receiver. The procedures may include dynamic channel assignment and the decision on a serving radio transceiver and a ready channel in the portable radio terminal are identical with or similar to the corresponding procedures in the PABX in accordance with Figure 3. The PSTN is not involved in the selection of the radio channel, nor the roaming or delivery for a portable radio terminal which is serviced by a radio transceiver connected by the cable to the TTC. The controller of the transceiver and its connected radio transceivers, however, may also cooperate with the PSTN and a portable radio terminal to establish a call from the PSTN with a portable terminal that is serviced by one of the radio transceivers connected to the radio. the controller of the transceiver in a manner that will be described below. In order to send the network, the PSTN takes into account the TTC as equivalent to a PABX with direct dialing facilities. Figure 6 illustrates a portable radio terminal PRT which can be part of a residential subscriber equipment according to Figure 2, and can constitute an extension for the PABX according to Figure 3. The portable radio terminal comprises a means input / output, I / O comprising at least a numeric keypad or microphone or presentation device or loudspeaker or a printer. The portable radio terminal also comprises a portable terminal store PTS, a portable terminal computer, PTC, and a portable radio terminal transceiver, PTR. The portable terminal computer, the portable terminal store, the input / output means and the portable transceiver together constitute a means to carry out certain steps and procedures in relation to the communication that will be described below. The portable radio terminal is intended to be able to be used not only in the residences of the subscribers, if it is part of the residential equipment, or in the business areas of the subscribers, if they constitute an extension for a PABX, but also remains next to a telepoint radio transceiver. Each residential radio transceiver and telephone exchange radio transceiver and telepoint radio transceiver frequently and preferably also frequently transmits radio signals on at least one of a predetermined group of radio channels. The radio signals of each transceiver comprise information on the identifity of the transmitter and a PABX identity of appropriate cases or TSN identity or TTC identity. Radio signals can also comprise information about available channels in the transmitter and the order in which the transceiver scans the radio channels to receive signals from the portable radio terminals. A telephone exchange radio transmitter or a telepoint radio transmitter can send messenger service to the portable radio terminal by transmitting the radio signals comprising the identity of the terminal to which a messenger has alerted on at least one of the channels of radio. The portable radio terminal frequently scans one or more or all of the radio channels of the predetermined group to receive radio signals from the nearby residential transceivers or from the telephone or telepoint radio, if any. Sometimes there are no radio signals or all or some of the radio signals are too weak or altered by noise or interference signals. When the appropriate radio signals are received, the portable radio terminal determines from the received radio signals the identity of the transmitting radio transceiver and possibly other information about available channels, etc. The information is stored in the portable terminal store separately for all present or recent active transmitters and is updated with more corresponding recent information obtained during a subsequent scan. Based on the intensity and / or quality of the received radio signals and / or other information on the transceiver in the portable terminal store and possibly also on predetermined rules, the portable terminal computer selects as a serving transceiver, a transceiver which has transmitted the appropriate radio signals which in turn were received by the portable terminal. When there is more than one possible selection, the rules can give priority to the strongest transceiver on the same subscriber's equipment. In accordance with a first embodiment of the present invention, a portable radio terminal selects as a transmitter serving a transmitter of a telepoint radio station or a transmitter connected to a telepoint transceiver controller and tries to inform a Subscriber location store on the selected transceiver. This can be done automatically by the portable radio terminal or only after the manual activation of a push or push button by the user of the terminal. If the radio terminal is part of a residential equipment of the subscriber, the portable radio terminal tries to establish a call with the corresponding residential base radio station. The call is established using the telepoint radio station or the transceiver controller of the serving radio transceiver and the PSTN. The call set-up procedure may be in accordance with any of the well-known telepoint call set-up procedures. When the residential base radio station answers the call, the portable radio terminal initiates the transmission of a coded message comprising information about the calling handheld radio terminal entity, and the subscriber number of the subscriber station network. telepoint or the controller of the radio transceiver that gives selected service. The residential base radio station stores at least information on the subscriber number of the telepoint station network or the radio transceiver controller serving in the residential location store. When a call is then received for the portable radio terminal, the residential base station redirects the call to the network as a call for the telepoint radio station or the telepoint transceiver controller to the radio transceiver that gives service, in accordance with the information in the residential location warehouse. Figure 14 illustrates an exemplary combination in accordance with the present invention whereby a residential base radio station, PABX, or a telepoint radio station can redirect the call without the use of central intelligence in the PSTN system . In Figure 14, the subscriber unit A tries to call on a first external line 10 of the PSTN, a subscriber whose portable unit C is typically serviced by the subscriber's equipment Bl. Bl is preferably a residential base radio station, a PABX or a telepoint radio station. If the portable C-unit is not currently placed in the service area of the subscriber's equipment Bl, the call is redirected back to the network as a call to the subscriber's B2 equipment which is currently serving the portable unit C with which it is trying to contact the subscriber A. In accordance with an exemplary embodiment of the invention, this redirection can be achieved by calling unit B2 on a second external line 12 of the PSTN and connecting the two lines 10 and 12 on the subscriber's Bl equipment. The system may include functionality that is provided, for example, by the first and second telecommunication lines 10 and 12, to receive a call from the telecommunication network through the first line 10 and automatically establish and redirect the call again through the second line 12 towards the telecommunication network as a call to the serving radio transceiver. In this way, the system provides re-direction of call and a roving function between the different classes of equipment of the subscriber connected to a PSTN without introducing new procedures in the PSTN or requiring central intelligence in the PSTN. A portable radio terminal which constitutes an extension for a PABX in accordance with Figure 3, attempts to call the PABX after selecting as a radio transceiver serving a transceiver other than one of the radio transceivers of the PABX This is normally done automatically but can be initiated by the user of the terminal by pressing a pressure button or other device in the terminal. The call is established using the PSTN and the serving transceiver and an associated radio station or controller. The call set-up procedure may be in accordance with a known telepoint or a PABX or one of the residential call set-up procedures. When the called PABX answers the call, the portable radio terminal initiates the transmission of a coded message comprising at least the information on the identity of the portable radio terminal and the subscriber number of the residential or telepoint network. or the controller of the radio transceiver serving the selected service. The PABX stores at least the information on the identity of the portable radio terminal and the number of the network subscriber in the location store of the telephone exchange. When a call is then received for the portable radio terminal, the PABX redirects the call to the network as a call for the telepoint radio station or the telepoint transceiver controller or the residential base radio station of the transceiver. radio that gives service, in accordance with the information in the location store of the telephone exchange. As in the previous example, the call can be redirected as shown in Figure 14 by calling unit B2 on a second external line 12 of the PSTN, and connecting the two lines 10 and 12 on the equipment Bl of the subscriber. A call for a portable radio terminal redirected by a residential base station or a PABX to the network as a call for a telepoint radio station or a telepoint transceiver controller is addressed by the PSTN in the same manner independently of which Portable radio terminal is intended to be the recipient of the final call. The call is answered by the telepoint station or the transceiver controller as any call. When the telepoint radio station or the transceiver controller has answered the call, the residential base station or the PABX that has redirected the call, transmits the identity information of the portable radio terminal intended to be the final receiver of the call. call. This information about the identity can be the subscriber number of the network or the extension number of the portable radio terminal. To establish contact with the portable terminal, the portable radio terminal must be called by messenger via the serving telepoint radio transceiver. If the portable radio terminal receives service via the radio transceiver of a telepoint station having only one transceiver, the call by messenger is carried out from this transceiver only. If the portable radio terminal is provided by the radio receiver of a transceiver controller and the location store has reported the subscriber's network number of the controller, there is more than one radio transceiver possible. The transceiver controller then initiates the call by broadcasting messenger of the portable terminal from all radio transceivers connected to the transceiver's controller. The portable radio terminal that receives the call signals by messenger sends a response to its radio transceiver that gives selected service. The response is directed by the radio transceiver to the transceiver controller. The transceiver controller then directs the call to a radio transceiver that provides service for radio communication with the portable radio terminal. The call is then completely established with the portable radio terminal to which it is intended. A residential portable radio terminal can receive service by means of a radio transceiver from the telephone exchange and be similarly called if it provides its residential location store with a subscriber number of the PABX network, similarly . In addition, a portable radio terminal constitutes an extension to a PABX which can be served by a telephone exchange radio transceiver of another PABX. For this purpose, there may be a pair of unoccupied extension numbers in each or some of the PABXs to be used through the portable residential or telephone exchange radio terminals. For purposes of dialing the number directly, these idle extension numbers may be the complete numbers of the network subscriber. When a visitor hand-held radio terminal is serviced by a telephone exchange radio terminal, one of these unoccupied extension numbers may be assigned. The visiting portable radio terminal then releases this extension number assigned to its residential location store. Then a call can be redirected from the transceiver of the residential equipment of the house to the temporary extension number assigned to the portable terminal in accordance with the information stored in the residential location store of the house. In this way, the identity of the portable terminal that is destined as the final receiver of the call is identified to the transceiver that gives service by means of the temporary extension number that has been called. As described above with reference to Figure 14, the call can be redirected by calling unit B2 on a second external line 12 of the PSTN, and connecting the two lines 10 and 12 on the equipment Bl of the subscriber. A portable radio terminal that has been reported to your residential location or telephone exchange store, a radio transceiver that provides service other than your residential or telephone exchange transceiver may then leave the area covered by this transceiver and return to the area covered by your residential transceiver on one of the radio transceivers of your PABX telephone exchange. When you return and receive the appropriate radio signals from your residential radio transceiver or from one of the radio transducers in your PABX telephone exchange, the portable radio terminal selects this transceiver as the serving transceiver and transmits a transceiver signal. radio comprising a specific re-entry message. The re-entry message comprises information on at least the identity of the portable radio terminal and preferably also information on the transceiver providing the previous service. When you receive this information from your transceiver, the home radio base station or the PABX changes the information about the related portable radio terminal in its location store, accordingly. A PABX that has a pair of unoccupied extension numbers for temporary use by visiting handsets may have an appropriate means to temporarily remove this unoccupied extension number previously assigned to a handheld terminal from use. visitor when the portable terminal no longer receives service through a PABX telephone exchange transceiver. This means may comprise means for making a call by messenger of supposed visiting terminals with the assigned extension numbers in order to check whether the visiting terminal with the assigned extension number is still in proximity to one of the transceivers of the telephone exchange of the PABX. A supposed portable visitor terminal that does not respond to this call by courier may have its assigned extension number removed from use. In order to be able to subsequently assign the removed extension number to another visitor handheld terminal, the PABX can call the residential base radio station or the PABX of the visiting mobile terminal and inform its location store during the withdrawal of the use of the extension number by the portable terminal. The PABX does not assign the removed extension number to another visiting portable terminal until the residential base station called or the PABX has answered the call related to the withdrawal of the assigned extension number or after a prolonged extension of time by which prevents two portable terminals from using the same extension number. A telepoint radio station or a telepoint transceiver controller can also store the identity of the portable radio terminals that receive service frequently send call by messenger to the portable radio terminals to which supposed service is provided to check the presence of similar. The telepoint awaits the answers of this call by messenger of the portable radio terminals to which service is given to assumptions. When he does not receive a response to a call by a courier from a portable terminal, the telepoint establishes a call to inform the appropriate location store of the identity of the portable terminal to which the supposed service is given that does not answer this call by messenger. The information in the location store can be changed accordingly. Some PSTNs comprise means for transferring calls from a subscriber who has been called to another subscriber. This means of call transfer can be used by a subscriber who visits another subscriber and who wishes to receive his calls at the site of the visiting subscriber. A PSTN comprising a call transfer means may comprise a separate call transfer store to receive from the subscribers the information about other subscribers where they wish to receive their calls or use other stores including the subscriber's stores of the network for this purpose. For the purpose of call transfer, a subscriber normally transmits to his local station a message comprising information on the number (s) of the subscriber of the subscriber's network where he wishes to receive his calls. After receiving this information, the PSTN does not direct a call to a subscriber in accordance with the normal information in the subscriber's store of the network but directs any call to the subscriber in accordance with the received information stored in the call transfer store .

The call transfer means in a PSTN can be used simultaneously with or instead of location stores in the residential base station or the PABX to transfer calls from a subscriber's site to another subscriber's site, eg, a station or telepoint controller. When using network call transfer means instead of these location stores, the portable radio station is programmed to call a number of the network dedicated to the call transfer means instead of its network subscriber number to give to know the assigned extension number or the subscriber number of the serving radio transceivers. Neither when the call transfer medium of the PSTN is used in conjunction with the location store or when the PSTN call transfer medium is used instead of the location store there are no PSTN modifications that are required in order to to be able to call a portable radio terminal which is serviced by a telepoint radio transceiver, provided that an identity or number with a conventional format of the subscriber number is disclosed. The invention should not be restricted to the described modalities of PRT or RBS or TSN or TTR or TTC or XTR or PABX or to the specific PSTN described but can be implemented in somewhat different ways.

In accordance with one embodiment of the invention, as shown in Figure 7, a telepoint transceiver controller with telepoint radio transceivers connected in very similar to a PABX of the type described above. According to this embodiment, a telepoint radio station is also similar to a PABX of the type described above but having only one radio transceiver. According to this embodiment, a telepoint transceiver controller or a telepoint radio station has a pair of extension numbers to be used by residential portable or telephone exchange radio terminals. When service is provided by a telepoint, a visiting portable radio terminal may be assigned one of these extension numbers. The visiting handheld then discloses this extension number assigned to its residential location store or telephone exchange location store or to the appropriate call transfer store of the PSTN just as a temporary assigned extension number of a PABX. When you receive a call addressed to a portable radio terminal, your home base station, the private telephone exchange to the network then uses this assigned extension number to direct or redirect the call to the portable radio terminal or in the same manner as a number extension of a private switchboard connected to the public telephone network. As described above with reference to Figure 14, if the call is serviced by the subscriber's equipment Bl, it can be redirected by calling unit B2 on a second external line 12 of the PSTN, connecting the two lines 10 and 12 in the Bl team of the subscriber. According to another embodiment of the invention, portable radio terminals which are serviced by radio transceivers other than those of their own residential base station or their own private branch exchange connected to the public telephone network do not they call their appropriate location stores by themselves and make known their temporary extension number or identity of the serving radio transceiver or telepoint or telephone exchange. Instead, terminals only initiate this call and report to an appropriate location or call transfer store. The initiation may be carried out either automatically or after selection of the serving radio transceiver by transmitting radio signals comprising the information on the portable entity or the subscriber number transmitting radio signals after the user of the station Portable radio has made pressing a push button or other terminal input device.

The actual call of the information is carried out by means of a telepoint or a private exchange connected to the public telephone network comprising the serving radio transceiver. Some residential base stations or radio stations having an ISDN access 2A + B to the public switched telecommunication network can be easily designed to redirect incoming calls to a PABX or telepoint using the given subscriber number of the telepoint or the telepoint. PABX or the temporary extension number of the portable radio terminal. Some residential radio base stations having only regular analog telephone access to the public switched telecommunication network however may have some difficulty in conveniently redirecting an incoming call to an advertised subscriber to an extension number. The residential radio base station can then comprise an answering machine that provides information about the calling party in the number disclosed as shown in Figure 8. A PABX may also comprise one or more answering machines that provide information about the calling party with respect to the number disclosed from the location store as shown in Figure 9. The answering machine or machines may be part of the warehouse of location as shown in Figure 9, or can be connected to one or more of the extensions in the PABX. A combination of compliance with another embodiment of the present invention can of course always comprise a switched telecommunication network but does not need to comprise both a residential equipment such as a telepoint and a telephone exchange. It is conceivable that a combination according to the invention comprises at least two private branch exchanges connected to the public telephone network separated but not telepuntos. Figure 10 illustrates a modality in which a PSTN of the type shown in Figure 1 has residential subscriber equipment units RSQ1 ... RSQ7 and private branch exchanges connected to the public telephone network PABXl ... PABX7. Of course, the number of connections is used for purposes of illustration only and any number of connections and any combination of subscriber equipment is possible. The following discussion refers to the Figures 11 to 13 to describe the methods in accordance with the present invention which are generally described above. Figure 11 is a flow chart illustrating a preferred embodiment of a method according to the present invention whereby a portable radio terminal can be registered in the subscriber's equipment of its selection. For the purposes of this discussion, the subscriber's equipment can refer to the residential subscriber's equipment, private switchboards connected to the public telephone network or telepuntos. In step 100, a portable radio terminal hears the radio signals that are being transmitted by the transceivers in the subscriber's equipment in the network. In step 105, the portable radio terminal selects as its transceiver serving a transceiver from which the portable terminal has received appropriate radio signals, by sending its identification number to the selected serving transceiver. In other words, any portable terminal will only be compatible with certain transceivers. Steps 100 and 105 cause the portable terminal to determine which of the transceivers in the network is compatible and select one of the compatible transceivers as the serving transceiver. The identification number of the portable terminal can be either its ISDN number (usually 7 digits plus the area code, where the 7 digits include an extension number) or it can be the ISDN number plus a separate extension. Of course, any other appropriate unique identification number can be used.

In step 110, it is determined if the portable terminal is in its base transceiver, that is, it is determined if the transceiver serving is the transceiver with which the portable terminal is normally associated. This can occur either on a subscriber equipment of the serving transceiver or the portable terminal. If in step 110, it is determined that the portable terminal is in its base, that information is recorded, that is, the location store of the base transceiver is informed that the portable terminal is in its base (step 115), and the routine ends. If the serving transceiver is not in a base location of the portable terminal, the portable terminal registers in the serving transceiver. Therefore, the portable terminal is connected to the subscriber equipment of the serving transceiver and sends its portable identification number thereto (step 120). If the transceiver serving is part of a private exchange connected to the public telephone network or telepoint, then a temporary extension number is assigned to the portable radio terminal that has received service (step 125). A residential subscriber's team can also assign a temporary extension number if it connects with the ISDN installations, with multiple extensions. The serving transceiver then places a call on the base subscriber's equipment to make the temporary extension number known (step 130). If a reply machine is connected to the base location of the terminal to which it has been serviced, the temporary extension number is made known to the answering machine. Otherwise, the number is disclosed to the location store of the base subscriber's equipment. In an alternative mode, the subscriber store of the network may be called to receive this information. The routine ends then. Figure 12 is a flow chart illustrating a routine that is carried out when a call is made to a portable radio terminal using the identification number of the portable terminal. In step 140, it is determined if there is a reply machine in the base subscriber's equipment and if the answering machine has the temporary extension number disclosed. If the answer is yes, the call is answered with the answering machine in step 145, and the calling party is informed of the redirection number, i.e., the temporary extension number. If there is no answering machine, the call is automatically redirected and the subscriber's equipment has the temporary extension number disclosed in step 150. The temporary extension number is removed from either the base location store or the subscriber store of the network, depending on the modality. If the temporary extension number is removed from the base location store, the call can be redirected using a second external line 12 of the PSTN, as shown in Figure 14. The routine then ends. Figure 13 is a flow chart illustrating a preferred embodiment of the invention according to which the temporary extension numbers are maintained so that the portable terminals assigned to them are active. In other words, periodically or when it is discovered that the number of the remaining unassigned temporary extension numbers is low, this routine is carried out. In step 160, all visiting portable terminals are called by courier through the subscriber's equipment, preferably a private branch exchange connected to the public telephone network or a telepoint, but possibly a residential subscriber's equipment with multiple lines. In step 165, it is determined whether each assigned terminal has responded to the expiration of a waiting period. For each assigned temporary extension number for which no response is received in step 165, the assigned extension number is written (step 170). This is disclosed to the location store where the temporary extension number is canceled (step 175). The cancellation is made in the base location store or the network subscriber store, as appropriate. It will be understood that the connections between the different network components, the subscriber's equipment and the radio transceivers can be made through radio links, optical fibers or other telecommunications connections instead of the cables. An example of this is a mobile telepoint radio station on the edge of a train or bus connected to a cellular telephone network. The foregoing description of the specific embodiments will fully reveal the general nature of the invention so that others, applying current knowledge, can easily modify and / or adapt the different applications such as specific modalities without deviating from the generic concept, and, therefore, both, these adaptations and modifications must and are intended to be included within the meaning and scale of equivalents of the modalities given to know. It should be understood that the phraseology of the terminology used herein is for the purpose of description and not of limitation.

Claims

CLAIMS:

1. , In combination, a public switched telecommunication network, at least two subscriber equipment connected to the telecommunication network and at least one portable radio terminal associated with one of at least the two subscriber equipment; the telecommunication network comprises a means for connecting at least two subscriber equipment with the network, and a means for establishing calls to and from the connected subscriber equipment; each of at least two subscriber equipment comprises a radio transceiver for radio communication with at least one portable radio terminal, and wherein one of the subscriber's equipment comprises a location store for storing information at minus a portable radio terminal associated with one of the subscriber's equipment; at least one portable radio terminal comprises a means for transmitting radio signals to be received by the radio transceiver, a means for receiving radio signals transmitted by the radio transceiver, a means for determining the radio signals received , the identity information of a transceiver, if any, and a means of selecting as a transceiver to provide service, a transceiver of appropriate received radio signals, if any; the combination comprises a means for calling through the network the subscriber's equipment with which at least one portable radio terminal is associated and reporting to the location store the identity of the selected service transceiver, when the transceiver serving selected is a transceiver that is not of the transceiver of the subscriber's equipment with which at least one portable radio terminal is associated; and a means including first and second telecommunication lines that are provided in one of the subscriber's equipment in response to receiving a call from the telecommunication network through the first line to a portable radio terminal that has been reported to a location store with the subscriber's equipment as being served by the radio transceiver other than the radio transceiver of the subscriber's equipment with which the portable radio terminal is associated, to automatically establish and direct the call again through the second line towards the second telecommunication network as a call to the subscriber's equipment comprising the serving radio transceiver, the call comprising information about the identifity of the portable radio terminal. The combination according to claim 1, wherein the telecommunication network further comprises a subscriber store of the network for storing the information about the subscribers of the network including the subscriber numbers of the network of at least two types of the subscriber, and wherein a call to a portable radio terminal associated with the subscriber's equipment in the combination, is established by the telecommunication network with the equipment of the associated subscriber in accordance with the information on the associated radio terminal stored in the the subscriber's store of the network. 3. The combination according to claim 1, wherein the means for calling is provided in at least one portable terminal. The combination according to claim 1, wherein the means for calling is provided in each of at least two subscriber equipment. The combination according to claim 1, wherein at least one of at least two subscriber equipment comprises a subscriber's residential equipment including a residential base radio station connected to the network. 6. The combination according to claim 1, wherein at least one of at least two subscriber equipment comprises a private exchange connected to the public telephone public network including a switch in the telephone exchange connected to the network. 7. The combination according to claim 1, wherein at least one of at least two subscriber equipment comprises a private branch exchange connected to the public telephone network having multiple extension numbers for temporary use by at least one visiting portable radio terminal not normally associated with the equipment of the telephone. subscriber, the subscriber's equipment assigns an unoccupied extension number to at least one visiting portable radio terminal to which service is to be provided by a transceiver of the subscriber's equipment, and the location store of the subscriber's equipment in which at least one visitor terminal is associated with being informed about the identity of the selected transceiver indirectly, reporting the assigned extension number. A combination according to claim 7, wherein at least two subscriber equipment further comprises a means for making a courier call to visiting portable radio terminals having assigned extension numbers; means for withdrawing from use the numbers of the assigned extension of the portable radio terminals that do not respond to the call by courier; and means for establishing a call through the network to cancel the information on the assigned extension number of the visiting portable radio terminal that does not respond to the call by courier. The combination according to claim 1, further comprising a telepoint system connected to the communication network comprising a telepoint radio station comprising a telepoint radio transceiver for radio communication, with the radio terminals portable means for receiving a request for access instead of and for directing a call from a portable radio terminal to the telecommunication network, a means for calling by courier to a hand-held portable radio terminal called by the telecommunication network, and means for directing a call from the telecommunication network to a portable radio terminal to a portable radio terminal that has been serviced and that has been called by messenger and responds. The combination according to claim 9, wherein the telepoint radio station further comprises a means for storing identities of portable radio terminals to which a service has been provided, a means for sending a call by messenger to terminals of portable radio that has been served in order to verify the presence of the portable radio terminals to which it has been served, a means to wait for the answers to its call by messenger from the portable radio terminals to which it has been served by messenger , And a means to establish a call through the network to inform the location store of a portable radio terminal to which it has previously been served that has not stated that the portable radio terminal is no longer being served by the radio station. telepoint radio. The combination according to claim 1, further comprising a telepoint system connected to the telecommunication network comprising a telepoint transceiver controller, comprising means for receiving a call from the telecommunication network to a portable terminal and initiating a call by broadcast radio messenger of the portable terminal from all telepoint radio transceivers connected to the telepoint transceiver controller, a means for receiving a response to a call by courier through a request for access to a transceiver telepoint radio and a portable radio terminal via a telepoint radio transceiver, a means for directing a call from a portable radio terminal via a connected telepoint radio transceiver serving the telecommunication network, and means for directing a call from the telecommunication network through a transceiver telepoint radio that gives service connected to a portable radio terminal. The combination according to claim 11, wherein the telepoint radio transceiver comprises means for sending a messenger call from a portable radio terminal during the request by the controller of the telepoint transceiver, a means for receiving and directing to the controller of the telepoint transceiver the responses to the call by courier and a means for receiving access requests from the portable radio terminals and directing the same to the controller of the telepoint transceiver. The combination according to claim 11, wherein the telepoint transceiver controller further comprises means for storing the identities of the portable radio terminals to which it has been provided, a means for initiating the call by radio messenger. broadcasting of the portable radio terminals to which it has given service in order to check the accessibility of the portable radio terminals to which it has been provided, a means to wait for the answers to the call by broadcast messenger from the portable radio terminals to who has given service by messenger, and a means to establish a call through the switched network to inform the location store of a portable radio terminal that has previously been serviced that does not answer that the portable radio terminal has already is not being serviced by the telepoint transceiver controller. 14. In combination, a public switched telecommunication network, at least two subscriber equipment connected to the telecommunication network, and at least one portable radio terminal associated with one of at least the two subscriber equipment, at least two subscriber equipments are selected from a connected private exchange. to the automatic public telephone network, a residential subscriber equipment and at least one telepoint system, at least one telepoint system is selected from a telepoint radio station and a telepoint controlled transceiver with the telepoint radio transceivers; the telecommunication network comprises means for connecting at least two subscriber equipment to the network, and means for establishing calls to and from the subscriber's equipment connected to; each of at least the two subscriber equipment comprises a radio transceiver for radio communication with at least one portable radio terminal, and wherein one of at least the two subscriber equipment comprises a location store for storing the information in at least one portable radio terminal, which is part of a subscriber's equipment; at least one portable radio terminal comprising means for transmitting the radio signals to be received by at least one transceiver of at least two subscriber equipment in the combination, a means for receiving radio signals transmitted by at least one transceiver of at least two subscriber equipment in the combination, a means for determining from the information of the received radio signals on the identity of a transmitting transceiver and a subscriber equipment of a transmitting transceiver, in case of have it, and a means to select as a transceiver serving a transceiver of appropriate received radio signals, if any; the combination further comprises means for calling through a network the subscriber equipment with which the portable radio terminal is associated and reporting to the location store an identity of the serving transceiver and the identity of the subscriber equipment of the transceiver that service when the transceiver serving is a transceiver other than the transceiver of the subscriber's equipment with which the portable radio terminal is associated; and means including first and second telecommunication lines that are provided on one of the subscriber's equipment that responds to receive a call from the telecommunication network through the first line to a portable radio terminal that has been reported to the warehouse of location of a subscriber's equipment as being served by a radio transceiver other than the radio transceiver of the subscriber's equipment with which the portable radio terminal is associated, to automatically establish and direct the call again through the second line to the telecommunication network with a call from the subscriber's equipment comprising the serving radio transceiver, the call comprises information about the identity of the portable radio terminal. The combination according to claim 14, wherein each private exchange connected to the public telephone network comprises a telephone exchange switch, a telephone exchange radio transceiver connected to the switch for radio communication with the portable radio terminals , and an extension location store to store information about the portable radio terminals that constitute extension terminals for the private exchange connected to the public telephone network; each residential subscriber equipment comprises a residential base radio station connected to the network, and a portable radio terminal, the residential base radio station comprises a residential radio transceiver for radio communication with the portable radio terminal and a residential location store for storing information about the portable radio terminal that is part of the same residential equipment of the subscriber; each telepoint radio station comprises a telephoto radio transceiver for radio communication with portable radio terminals, a means for receiving a request for access from and to direct a call from a portable radio terminal to which service has been given to the telecommunication network, a means for sending a call by messenger to a radio terminal to which a call has been given by the telecommunication network, and a means for directing a call from the telecommunication network to a portable radio terminal who has been served has been sent a call by messenger and responds; each telepoint radio transceiver comprises means for sending a call by messenger of a portable radio terminal during request by the telepoint transceiver controller, a means for receiving and directing to the telepoint transceiver controller the answer to the call by courier , and means for receiving access requests from the portable radio terminals and directing them to the telepoint transceiver controller; and each controller of the telepoint transceiver comprises means for receiving a call from the telecommunication network to a portable terminal and initiating a call by broadcasting messenger of the portable terminal from the telepoint radio transceivers connected to the telepoint transceiver controller, means for receiving a response to the call by courier through a request for access of the telepoint radio transceiver and a request for access of the portable radio terminal through a telepoint radio transceiver, a means for directing a call from a portable radio terminal through a telepoint radio transceiver providing service connected to the telecommunication network, and a means for directing a call from the telecommunication network through a telepoint radio transceiver that provides connected service with a portable radio terminal. 16. The combination according to claim 14, wherein the telecommunication network further comprises a subscriber's store of the network for storing the subscriber information of the network including subscriber numbers of the network of at least two subscriber equipment. subscriber, and wherein a call to a portable radio terminal associated with the subscriber's equipment in the combination, is established by the telecommunication network with the equipment of the associated subscriber in accordance with the information on the portable radio terminal stored therein. subscriber store of the network. The combination according to claim 14, wherein the means for the call is provided in at least one portable terminal. 18. The combination according to claim 14, wherein the means for the call is provided in each of at least two subscriber equipment. 19. The combination according to claim 15, comprising at least one unit that is selected from the private branch exchange connected to the public telephone network, the telepoint radio station and the telepoint transceiver controller in the combination that has multiple extension numbers for temporary use by visiting portable radio terminals that do not normally constitute extensions to the unit, at least one unit assigning an unoccupied extension number to a visiting portable radio terminal to be served by a unit transceiver; and the location stores of the visiting terminals being informed about the identity of the selected transceiver indirectly reporting the assigned extension number. The combination according to claim 19, wherein at least one unit comprises a means for sending a call by messenger to the visiting portable radio terminals to which they have been assigned in unit extension numbers; means for withdrawing from use the assigned extension numbers of the visiting portable radio terminals that do not respond to the call by courier; and means for establishing a call through the switched network to the location stores of the visiting portable terminal to cancel the information on the assigned extension number of the visiting portable radio terminal that does not respond to the call by messenger. The combination according to claim 15, wherein the telepoint radio station further comprises means for storing the identities of portable radio terminals to which service has been given., means to send a call by messenger to the portable radio terminals to which it has been given service in order to check the presence of portable radio terminals to which it has been given service, a means to wait for the answers to its call by courier from the portable radio terminals to whom service has been given and call by courier, and a means for establishing a call through the network to inform the location store of a portable radio terminal to which it has previously been serviced who does not answer, that the portable radio terminal has not been served by the telepoint. The combination according to claim 15, wherein the telepoint transceiver controller further comprises means for storing the identities of the portable radio terminals to which it has been serviced, a means for initiating a call by courier radio broadcasting of the portable radio terminals to which service has been given in order to check the accessibility of the portable radio terminals to which it has been provided, a means to wait for answering the call by radio messenger broadcast from the terminals portable radio stations that have been called by messenger, and a means to establish a call through the network to inform the location store of a portable radio terminal that has previously been serviced that does not answer, that the portable radio terminal has no longer been served by the telepoint. 23. A method for establishing a call to a portable terminal to a combination of a public connected telecommunication network, at least two subscriber equipment connected to the telecommunication network and at least one portable radio terminal associated with one of at least the two subscriber computers, one of at least the two subscriber computers comprises a location store for storing information about the portable radio terminal, wherein at least two subscriber computers are selected from a connected private exchange. to the automatic public telephone network, a residential equipment of the subscriber and at least one telepoint connected to the telecommunication network; the method comprises the steps of receiving the radio signals on a portable radio terminal and the terminal of the radio signals received the information on the identity of a transceiver or transmitter and the subscriber equipment of a transmitting transceiver, if there is one.; selecting on the portable radio terminal as a serving transceiver, a transceiver of appropriate radio signals, if any; transmitting the identity information of the portable radio terminal with radio signals from the portable radio terminal to a transceiver serving when the transceiver serving is a transceiver other than the transceiver of the subscriber's equipment with which it is associated the portable radio terminal; storing the information corresponding to the identity of the portable radio terminals to the caules is received service with the radio signals in the equipment of the subscriber of which the serving transceiver is part when the transceiver serving is a transceiver of a subscriber equipment that is not the subscriber's equipment with which the portable radio terminal is associated; assign, on the subscriber equipment of the serving transceiver, a temporary extension number to the portable radio terminals to which the reported identity is serviced; setting up a call from the subscriber's equipment to the transceiver serving through the network to the subscriber's equipment with which the portable radio terminal is associated and reporting to the location store the assigned temporary extension number of the portable terminal when the transceiver serving is a transceiver other than the transceiver of the subscriber's equipment with which the portable radio terminal is associated; and when a transceiver of at least one transistor device receives a call through the network in a first telecommunication line to a portable radio terminal that has been reported in the location store as being served by another transceiver radio, redirect, in a second telecommunication line connected to the first telecommunication line in at least one of the two subscriber equipment, the call through the network as a call to the subscriber's equipment comprising the extension number reported temporary. The method according to claim 23, further comprising the steps of sending a call by courier from at least one subscriber's equipment selected from a private exchange connected to the public telephone network and a telepoint system, radio terminals visiting laptops that have been assigned temporary extension numbers; withdraw from use the assigned extension numbers of the visiting portable radio terminals that do not respond to the call by courier; and establishing a call through the network to cancel the temporary extension number in the location store of the subscriber's equipment of the visiting portable radio terminal that does not respond to the call by messenger. 25. A method for establishing a call to a portable terminal in a combination of a public switch of the telecommunication network, at least two subscriber equipment connected to the telecommunication network, and at least one portable radio terminal associated with the telecommunication network. one of at least the two subscriber computers, at least the two subscriber computers are selected from a private switchboard connected to the automatic public telephone network, a residential equipment of the subscriber and at least one telepoint, the telecommunication network comprises a subscriber store of the network for storing the information about the subscribers of the network and a call transfer means including a call transfer store to receive from the subscribers information about other numbers of the subscriber of the network to which the calls of the subscribers are transferred; the method comprises the steps of: receiving radio signals from a transceiver in the portable radio terminal and determining the information of the identity of a transmitting transceiver and the subscriber equipment of a transmitting transceiver from the radio signals received; if there is; selecting in a portable radio terminal as a serving transceiver, a transceiver of appropriate radio signals, if any; transmitting the identity information of the portable radio terminal with radio signals from the portable radio terminal to a transceiver serving when the transceiver serving is a transceiver other than the transceiver of the subscriber's equipment with which it is associated the portable radio terminal; assigning a temporary extension number in the subscriber's equipment of the transceiver serving a portable terminal that has been given service that has reported information about its identity; setting up a call from the subscriber equipment of the transceiver serving the network through the network to the call transfer means and making known to the transfer means the assigned temporary extension number of the portable radio terminal to which the service is provided when the serving radio transceiver is a transceiver other than the transceiver of the subscriber's equipment with which the portable radio terminal is associated; setting up a call to a portable radio terminal associated with at least one subscriber equipment through the telecommunication network to the subscriber's equipment in accordance with the information on the portable radio terminal in the subscriber's store of the network if not the temporary extension number is reported to the call transfer store; and when a call is received to a portable radio terminal that has been assigned a reported temporary extension number to the call transfer store of the switched network, then directing the call through the network to the subscriber having a number of subscribers of the network that corresponds to the reported temporary extension number. 26. The method according to claim 25, further comprising the steps of sending a call by courier from at least two subscriber computers, the visiting portable radio terminals have been assigned temporary extension numbers; withdraw from use the assigned extension numbers of the visiting portable radio terminals that do not respond to the call by courier; and establishing a call through the network to the network call transfer means to cancel in the call transfer store, the temporary extension number of the visiting portable radio terminal that does not respond to the call by messenger. 27. A communication method in a combination of a public connected telecommunication network, at least two subscriber equipment connected to the telecommunication network, at least one answering machine connected with at least one of at least two computers of the subscriber, and at least one portable radio terminal associated with one of at least two subscriber computers, one of at least the two subscriber computers comprises a location store for storing the information on at least one of the portable radio terminals associated with a subscriber's equipment, at least the two subscriber's equipments are selected from a private branch exchange connected to the automatic telephone public network, a residential equipment of the subscriber and at least one telepoint; the method comprises the steps of: receiving radio signals from a radio transceiver, if any, in a portable radio terminal, and determining the information of the identity of a transmitting transceiver and a subscriber's equipment from the received radio signals; with which the transmitting transceiver is associated, if any; selecting at the portable radio terminal as a serving transceiver, a transceiver of appropriate received radio signals, if any; transmitting the identity information of the portable radio terminal with radio signals from the portable radio terminal to the serving transceiver when the serving transceiver is a transceiver other than the transceiver of the subscriber's equipment with which the transceiver is associated. portable radio terminal; assigning a temporary extension number in the subscriber's equipment of a transceiver that serves the portable radio terminal which has received service having reported information about the identities; setting up a call from the sub-subscriber equipment on the transceiver serving through the network to the subscriber's equipment with which the portable radio terminal is associated and reporting to one of at least one answering machine and the location store the assigned temporary extension number of the portable radio terminal that is serviced when the serving transceiver is a transceiver other than the transceiver of the subscriber's equipment with which the portable radio terminal is associated; and when a call via the network is received on a subscriber's equipment to a portable radio terminal that is part of the subscriber's equipment, which has been assigned a temporary extension number reported to the answering machine, answering the call on the answering machine of the subscriber's equipment and providing the temporary number assigned or reported to the calling party with the answering machine; and when a call is received on the subscriber's equipment through the network on a first telecommunication line to a portable radio terminal associated with the subscriber's equipment and assigned a reported temporary extension number to the location store redirecting the call in a second telecommunication line connected to the first telecommunication line in one of at least the two subscriber equipments back to the telecommunication network as a call to the subscriber having a number of the subscriber of the network that corresponds to the reported temporary extension number. SUMMARY OF THE INVENTION The invention relates to a method of communication and a combination of a telecommunication network switched and connected to the network, a first private exchange connected to the public telephone public network or a residential equipment for a subscriber, a second private exchange connected to the automatic public telephone network or residential equipment for a subscriber, possibly also a telepoint, and a portable radio terminal that is part of a residential equipment or an extension to a private exchange connected to the public telephone network, the portable radio terminal when it is served by a radio transceiver that is not your residential transceiver or telephone central radio, it uses the private exchange connected to the public telephone network or the telepoint and the network to call its residential base radio station or private exchange connected to the public telephone network and reports having given service to the private telephone network connected to the public telephone network or telepoint or a temporary number to a location store, calls to the portable radio terminal then being transferred through the residential equipment or the private exchange connected to the public telephone network through the network to The private exchange connected to the public telephone network or telepoint in accordance with the information in the location store, whereby the portable radio terminal can call and be called through the network and the private or telepoint center.