MXPA96006703A - Communication system and method using radio-localization of two ways, to provide call control - Google Patents

Abstract

The present invention relates to a system for directing a call that is initiated from a first communication device and is directed to a personal telephone number of a called party, characterized in that it comprises: a) means for determining whether a two-way pager is reachable path associated with the personal telephone number of the called party, regardless of the location of the radiolocator, b) means for causing the call to be directed to a predefined station or by default when the two-way radiolocator is not reachable, wherein said determination and the provocation are achieved without sending a message to the two-way radiolocator in response to the flame

Description

COMMUNICATION SYSTEM AND METHOD USING TWO-WAY RADIO-LOCALIZATION, TO PROVIDE This application relates to the patent applications of the U.S.A. commonly assigned, pending, Nos. of Series 08 / 379,425 and 08 / 379,430; and relates to the three patent applications of the US. pending, concurrently filed, commonly assigned, with title: COMMUNICATION SYSTEM AND METHOD USING TWO-WAY PAGING TO PROVIDE CALL CONTROL (SYSTEM AND METHOD OF COMMUNICATION, USING TWO-WAY RADIOLOCALIZATION, TO PROVIDE CALL CONTROL) (Agent File Numbers) : Foladare 11-13-17-19, Foladare 18-19-24-28, and Foladare 19-20-25-29); that are here incorporated by reference. PB XA FIELD IffVgNCIQH This invention relates to communication systems and more particularly to use radio location technology to establish communication with a moving part. AOT? CgDBM GOS DE IA IHVg CIOM In general, people who wish to contact a particular party initiate a call to a known phone specifically associated with that party, such as a wireless phone or the office of that party. A disadvantage of REF: 23561 this method of communication is that the parties are not always in immediate proximity to these associated phones, or for the same reason, in immediate proximity to any telephone. This presents a problem to people who need to immediately contact a mobile party, regardless of the location of that part. Various technologies have been developed in an effort to solve the problems of establishing communication with a moving part. These include call forwarding, radiolocalization and cellular systems. However, each of these technologies has disadvantages that prevent communication without junctions and ubiquitous. The invention described in the patent applications of the U.S.A. Serial No. 08 / 379,425 and Serial No. 08 / 379,430 (the '425 and' 430 inventions, respectively) cited above, address many of the problems associated with prior systems used to communicate with mobile individuals. In general, both of these inventions describe a call routing scheme, wherein each subscriber is assigned a personal telephone number (PTN) and uses a two-way pager to direct calls sent to that number. In the invention '430, when the call is directed to the subscriber PTN, an interrogation is generated based on network data and information on how to handle the call is recovered (referred to as "register" type addressing). The invention '425, when a call is directed to the subscriber PTN, the subscriber pager number is retrieved from the database and an alert signal is sent to the subscriber. The subscriber can then use the two-way pager to transmit a termination number back to the network, in response to the alert message (referred to as "called-by-call" type addressing) .Despite the numerous advantages of the inventions '425 and' 430, do not take into account situations where a subscriber is unable or unwilling to respond to a call-by-call alert message when that addressing mode is invoked. Subscriber not available, "improper call handling can waste network resources and result in the subscriber losing important calls, for example, consider a situation where a subscriber goes to work and leaves his two-way pager at home. Subscriber has specified call-by-call mode and a call goes to the subscriber's PTN, then the network will put the call on hold, locate the subscriber, and wait for a response However, a response will not be provided since the subscriber is not available. One way to handle this situation is to automatically direct the call to voice mail after a predetermined "interval" of time. Although a procedure of "interval" of time, provides a method to address the problem of the unavailable subscriber, the procedure has disadvantages. A disadvantage of the "interval" time procedure is that it requires that an unnecessary message be sent. Another disadvantage of the "interval" time procedure is that there is a possibility that a calling subscriber does not continue to wait in the call for the duration of the "time" interval, in which case the subscriber "loses" the call. COMPENDI EP The invention The present invention employs a two-way radiolocation technique, to overcome the disadvantages present in the previous systems used to communicate with mobile individuals, while at the same time providing an efficient call handling treatment for non-subscriber situations. available. According to the invention, a two-way subscriber radiolocator is interrogated to determine its accessibility. This interrogation does not require the radiolocator to generate an alert to the subscriber. If the radioloker does not respond to the interrogation, the radioloker (and hence the subscriber) is considered "unreachable", and no radiolocation messages are sent that would otherwise be broadcast to the two-way subscriber radiolocalizer, at least until certain predefined conditions are subsequently met. Situations where the pager fails to respond include those cases where: (a) the pager has been disconnected, (b) the pager is outside the paging range, and (c) the pager battery has been depleted. Not broadcasting the messages of a subscriber in those situations where the radiolocator is not reached, prevents the generation and transmission of unnecessary messages and in this way the resources required to spread those messages are not wasted. A mobile person wishing to take advantage of the present invention is equipped with a two-way locator radio and a Personal Telephone Number (PTN) is assigned. The mobile person uses the paging radio to transmit one or more call control parameters to a radio location service which in turn retransmits the parameters to the telephony network. The network can then use the parameters to control calls directed to the person's PTN. For example, the parameters may include a termination station number, to which calls to the PTN will be directed. The parameters can be transmitted in a ba. e "call-by-call", in which case the mobile person transmits the parameters in response to a radio-location message that alerts the mobile person of a call to the PTN. The two-way pager is designed in such a way that the paging service can determine if the pager can be reached or not, before sending a message in response to a call. This determination can be made by the radiolocation service alone or by the radiolocation service in response to a request from the network, but whatever the case, the results of the determination can be stored by the radiolocation service, by the network or by some combination of the two. When it has been determined that the two-way pager of a call-per-call subscriber is unreachable, calls to that subscriber do not generate a message but instead are directed to some predetermined termination number. In a preferred embodiment, the pager is equipped with "automatic disconnection", such as a body temperature sensor, which shuts off the pager when it is not worn. Before turning off the pager, the detector can initiate a transmission to a radiolocation service, notifying the service that the pager is not reached. Accordingly, no radiolocation messages will be sent in those situations where the subscriber is not available.

In this way, the network is evaluated before generating a call-by-call alert signal that the pager is not reached. In this way, the network can avoid assigning radiolocation and / or network service resources to the generation of a message that will not be received. Furthermore, when the pager is equipped with the "automatic disconnection" feature of the preferred mode, unnecessary messages and missed calls can be avoided in those situations where the subscriber does not carry the pager but has neglected to turn it off. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic block diagram of a communication system according to the present invention. Figure 2 is a schematic block diagram of a preferred embodiment of a communication system embodying the present invention. Figure 3 illustrates a suitable locator radio for use in accordance with the present invention. Figures 4A and 4B constitute a flow diagram illustrating the procedure followed to update a subscriber's termination number. Figure 5 is a flow diagram illustrating the procedure followed to direct a call according to the present invention.

Figure 6 is a schematic block diagram of a further embodiment of a communication system according to the present invention. Figure 7 is a schematic block diagram of a communication system that can be used to implement call-by-call addressing. Figure 8 is a schematic block diagram of an existing telephony network incorporating the elements of Figure 7. Figures 9A and 9B constitute a flow chart illustrating the steps taken in directing calls on a call base. per-call. Figure 10 is a flow diagram showing how subsequent addressing is implemented in the preferred embodiment of Figure 6. Figure 11 is a flow diagram showing the additional call addressing steps to be taken when the routing service of call-per-call of the present invention includes a radio locator status feature. PBS < TRTP TON fífiTAT.TAP? With reference to Figure 1, a block diagram of a communication system embodying the present invention is illustrated. According to the invention, a calling subscriber will be able to direct a call to a mobile part equipped with a two-way paging radio 10. The calling party initiates the call by a calling subscriber telephone 12. At this point, it should be noted that the calling subscriber's telephone, like all the other telephones discussed below, is simply used as an illustration and that the invention can be implemented using a variety of communication devices, including but not limited to telephones, computers, fax machines, video telephones and multimedia terminals. In any case, the calling party's telephone 12 is coupled to a switch for network access 14, by a first communication link 16. (Note: the first communication link 16, and all communication links described below, may take the form of a telephone line, twisted pair line, coaxial cable, fiber optic line, wireless link, or any other type "communication coupling." A second communication link 22 couples the switch for network access 14 to a Network Control Point (NCP) 24, which in turn couples to a database 34 by means of a third communication link 26. The database is coupled to a radio location service 28 via a fourth communication link 27. The mobile part uses the radio locator for transmitting a routing signal, represented by the wireless link 30, to the radio location service.

The addressing signal includes one or more parameters for call control that are associated with a terminating telephone 32, such as a termination number, a bandwidth and a protocol. The addressing signal may also include a paging radio identification number that may be used by the radio paging service to identify the paging radio locator. Although the bandwidth and the protocol are used throughout this description as illustrative call control parameters, it should be noted that other types of parameters may be employed without departing from the principles of the invention. Upon receiving the addressing signal from the radio locator, the radio location service retransmits the signal to the database where the termination number, bandwidth and protocol are extracted from the signal and stored. The termination number, bandwidth and protocol supplied by the mobile part are cross-referenced with the PTN of the party such that when the PTN of the party is marked, the number, bandwidth and protocol for that part can be recover from the database. When a calling party initiates a call by dialing a mobile party PTN, the call is coupled to a switch for network access 14 by a first communication link 16. The switch for network access 14 then interrogates the NCP for instructions by a second communication link 22, and the NCP, in turn interrogates the database through the third communication link 26. Based on the marked PTN, the database retrieves the termination number of the moving part, width band and protocol and passes them back to the NCP through the third communication link. The NCP, in turn, passes the number, bandwidth and protocol to the network access switch 14 which uses the parameters to redirect the call to the terminating telephone 32. The network access switch 14 redirects the call to the terminating telephone by a fourth communication link 20. At this point, the call can be answered by the mobile part in the terminating telephone. In light of the following description, it will be apparent to those skilled in the art that the database 34 may be incorporated into the NCP 24 or radio location service 28, in which case the present invention may be implemented without a base element of separate data. It will also be apparent that the addressing signal can include any combination of the termination number, bandwidth and protocol elements. For example, the two-way paging radio can be used in call-by-call mode, to transmit only one termination number and bandwidth while the protocol is considered the most recently registered protocol.

In a preferred embodiment as illustrated in Figure 2, the present invention is incorporated into an existing telephone network. As illustrated in the Figure, the calling party 40 seeks to establish communication with a mobile or "subscriber" party, 76 which is assigned a Personal Telephone Number (PTN) and equipped with a two-way radio locator 77. The The calling subscriber initiates a 41 telephone entry call by dialing the subscriber's PTN. This incoming call is coupled to a first local exchange 42 at the calling subscriber's facility through the first telephone line 54. The first local exchange directs the call to an originating access switch 44 on a first trunk 56 The switch 44 may take the form of a digital switch, or an electronic switching system such as the AT & T switch 4ESSMB (switch "4E"). For a more complete description of a 4E switch, see, the Bell System Technical Journal, Vol. 56, No. 7, p. 1015-1320, pub. Sept. 1977. Once the call has been routed to the switch 44, the switch 44 interrogates a Network Control Point (NCP) 66 through a first Inter-Channel Common Channel Signaling (CCIS) link 78. (Channel Inter-Channel Signaling) Common refers to the transmission of a call control signal between telephone exchanges, wherein a plurality of call control channels are multiplied into a single data link). At this point, if the subscriber has provided the collection of Digits Supplied by the Client (CED), the NCP instructs the switch 44 to connect the call to a Voice Response Unit (VRU) 43 via a first communication link 57. The VRU (for example, an AT &amp Network Services Complex; T, or NSCX) then plays a standard announcement notice to the calling party and retrieves the CED (for example, Personal Identification Number, or PIN) by receiving up to 10 digits, which can be indicated in the form of Multi signals - Dual Tone Frequency (DTMF). In a system that uses CED, it must be provided for the case where a subscriber can not provide the digits because the calling party is on a rotary dialing station or does not respond to the signal. In these two situations, the VRU can allow a time ending or abbreviated dialing sequence (for example #) to denote that digits will not follow.

Any CED collected by the VRU is passed back to the NCP. After the CED collection, or immediately after the originating access switch interrogates the NCP, whichever is the case, the NCP interrogates the Client Address Point (CRP) 68 via a second CCIS 67 link. Inquiry, the NCP sends to the CED, the PTN, and the telephone number of the calling party (Automatic Number Identification Number, or "ANI"). Based on the ANI and / or CED, the CRP classifies the call, deciding whether or not the call will be addressed directly to the subscriber. If the call is not going directly to the subscriber, the CRP instructs the NCP to direct the call to an alternate processing, such as a voicemail. If the call is going directly to the subscriber, the CRP accesses a subscriber register stored within the CRP, retrieves a termination number, bandwidth and protocol for the subscriber from the registry and returns the parameters to the NCP through the CCIS link 67. The NCP retransmits the termination number, bandwidth and protocol to the originating access switch via the CCIS 78 link, where the parameters are used to redirect the incoming call. The subscriber can update the termination number, bandwidth and protocol at any time using a two-way radio locator. To update the termination number, bandwidth and subscriber protocol 76, it generates a routing signal containing the new parameters using the two-way radio locator 77. The routing signal is transmitted to a radio location service transceiver 74. The transceiver retransmits the signal to a satellite earth station 70, either directly via communication link 85 or indirectly, via a wireless link 86, satellites 72 and wireless link 84 via wireless link 86. The satellite ground station in turn passes the signal to the CRP via a second communication link 82. The CRP extracts the new termination number, bandwidth and protocol and uses them to update the subscriber's CRP record. Calls are directed based on the most recent update of the CRP record. As described above, when an incoming call passes the classification by the CRP, the NCP 66 retrieves the termination number, bandwidth and protocol of the CRP 68 and passes it to the originating access switch 44 to use in redirecting the call to a terminating telephone 92. The redirection from the originating access switch to the terminating telephone is achieved through: a second trunk 58, a termination access switch 60 (which like switch 44, can be a switch) digital or a switch 4E), a third trunk line 62, a second local exchange 64 and a second telephone line 90. The originating access switch couples the call to the terminating access switch on the second trunk line. The terminating access switch in turn couples the call to the second local exchange on the third trunk line. The second local exchange then couples the call to the terminating telephone on the second telephone line. After the redirection is complete, the call can be answered by the subscriber in the terminating telephone. Figure 3 shows an illustrative embodiment of a two-way radio locator 102, a transceiver 112, a satellite 114, a satellite ground station 116, wireless links 111, 113 and 115, and a communication link 117, the mode is suitable to be used in accordance with the present invention. The locator radio 100 includes: a display 102, such as a liquid crystal display, or light emitting diode display; a selection key 104; a menu key 106; a keypad or numeric keypad 108; and a mode indicator 110, which may be included within the display 102. Figure 3 will be referred to in the following discussion of the flow chart in Figures 4A and 4B. Figures 4A and 4B show the steps that are taken in updating the subscriber termination number. The locator radio of Figure 3 can be used to update the termination number in a "record" base as described in the cross reference request of the US. Serial No. 08/379, 430, or on a "call-by-call" basis, as described in the cross reference request Serial No. 08 / 379,425. In this way, the description that follows includes providing both "record11" and "call-by-call" updates.

The first step the subscriber takes to update the termination number, bandwidth and protocol is to press the menu key 104 on the locator radio 100 (step 202). The word "update" will appear in the display 102. The subscriber then presses the selection key 106 to choose "update" (step 204). The word "update" will flash in the display to indicate that the subscriber can access the updated information (step 206). The subscriber can now feed the termination number, bandwidth and protocol by means of the numeric keypad 108, followed by the # key to indicate the end of the power (step 208). To provide a special call handling instruction (as described in US Patent Application Serial No. 08 / 379,425), such as a conference call instruction, a number associated with this instruction will be fed instead of a termination number (step 208). A subscriber who does not want to change the termination number, bandwidth or protocol and does not want to feed a special instruction number, can simply press the # key without typing any information. Furthermore, in a preferred embodiment, the locator radio is equipped with the ability to store termination numbers, bandwidths and protocols, such that abbreviated key sequences can be employed in place of manually provided updates. For example, the subscriber's office telephone number may be stored in the locator radio memory in a first site and the telephone number of the subscriber's home may be stored in the locator radio's memory in a second site. Subsequently, when the subscriber wishes to change the termination number to the office number, the subscriber simply types 1 followed by the # sign. Similarly, when the subscriber wishes to change the termination number to the house number, the subscriber simply types a 2 followed by the # sign. In any case, after receiving a # sign # feed, the radio locator mode indicator will flash (step 210). At this point, the subscriber must choose the desired mode (step 212). The locator radio determines whether the desired mode is the current mode (step 214 when the desired mode is the registration mode, step 222 when the desired mode is the call-by-call mode). If the subscriber desires the registration mode and the current mode is not the registration mode, then before the flashing mode indicator goes to continuous, the subscriber presses the selection key 106 to change the registration mode (step 216) . If the subscriber registers the registration mode and the current mode is the registration mode, the subscriber allows a period of time to pass, after which the flashing mode indicator will go on continuously; or alternatively, the subscriber can press the # key to shorten the synchronization and retain the current mode (step 218). Similarly, if the subscriber desires the call-by-call mode and the current mode is not the call-by-call mode, then before the flashing mode indicator becomes uniform, the subscriber presses the selection key 106 to switch to call-by-call mode (step 224). If the subscriber wants the call-by-call mode and the current mode is call-by-call mode, the subscriber allows a period of time to pass, after which the flashing mode indicator will go on continuously; or alternatively, the subscriber can press the # key to trim the synchronization and retain the current mode (step 226). After the mode has been chosen, the locator radio signals the transceiver 112 via the wireless link 111, sending the radio locator code, updated termination number, updated bandwidth, updated protocol and a mode indicator (step 220 for registration mode; step 228 for call-by-call mode). Following reception of the paging radio transmission, the transceiver 112 retransmits the paging radio code, new call control parameters, and mode indicator to the satellite earth station 116 (step 230), either directly on the paging coupling. communication 117, or indirectly through satellite 114 and wireless links 113 and 115. The next step (step 232) depends on the select mode. When the registration mode is chosen, the satellite station determines the subscriber's PTN from the radio locator code, uses the PTN to retrieve the Subscriber Client Address Point (CRP) Register and finally updates the record to reflect the new mode, termination number, bandwidth and protocol. When the call-by-call mode is chosen, the satellite station simply retransmits the updated parameters to an auxiliary (described in US Patent Application Serial No. 08 / 379,425) where it is used to direct calls to the Subscriber The update is complete after step 232 (step 234). Figure 5 shows in flow chart form, the steps that are taken in directing a call according to the present invention. In the following discussion of Figure 5, references will be made to Figure 2. As illustrated in Figure 5, a calling subscriber initiates a call by dialing the subscriber's PTN (step 300). The call is routed to the originating access switch (step 302) which interrogates the NCP to direct information (step 304). At this point, if the subscriber has provided collection of a CED, the NCP instructs the originating access switch to connect the call to VRU to collect the DTMF digits, and pass the collected digits back to the NCP (optional step 306) . After collecting the CED digits, or immediately after step 304, whatever the case, the NCP interrogates the CRP for the subscriber's registration, sending the CRP, PTN and ANI to the CRP (step 308). The CRP then retrieves the subscriber's registration based on the PTN (step 310). The record includes a termination number, bandwidth and protocol and may include instructions to classify the incoming call. If the subscriber has provided the subscriber record to initiate call classification, the CRP classifies the incoming call (determines the appropriate treatment for the call) based on the CED and / or ANI (step 312). Based on the classification made in step 312, a decision is made whether or not the call is addressed directly to the subscriber (step 314). If the call is not going directly to the subscriber, the CRP instructs the NCP to direct the call to an alternate processing, such as a network advertisement, voice mail, or service platform (step 316). If the call is going directly to the subscriber, the CRP returns the termination number, or "Network Address Number", the bandwidth and the protocol to the NCP. The NCP uses the number to route the call to the terminating telephone where it can be answered by the subscriber (step 318). The NCP can use the bandwidth and / or protocol to allocate a convenient channel for the call, and can use its knowledge of the subscriber's protocol to communicate with the subscriber in this protocol (ie the NCP can act as a protocol translator ). After redirecting the call, the processing of the call is complete (step 320). With reference to Figure 7, a block diagram is illustrated that contains the main elements of a communication system that can be used to implement a call-by-call addressing. As illustrated in the figure, a calling party initiates a call from a subscriber telephone calling 12 'to a mobile party that is equipped with a two-way paging radio 10'. The telephone of the calling subscriber is coupled to a first network switch 14 * by a first communication link 16 '. The first network switch is in turn coupled to a second network switch 18 'by a second communication link 20'. The second network switch is coupled to an auxiliary 24 'via the third communication links 22', and to a third network switch 26 ', by a fourth communication link 30'. In this way, t is a path between the telephone of the calling subscriber and the attendant, and a path between the calling subscriber telephone and the third network switch.

The auxiliary 24 'is an intelligent component that can be external to the network and connected to the network in the same way that a switch or a telephone is connected. An example of an external auxiliary are Voice Response Units (VRU). Two possible ways to connect the auxiliary to a network are: through a Common Channel Interchange Signaling Link (CCIS) and through an Integrated Service Digital Network (ISDN) communication link. In an alternate mode, the auxiliary is an internal network element, such as a switch 4E, in which case the auxiliary function remains the same, but a connection link is not required. When a call is initiated by marking the PTN of the moving part, it is coupled to the auxiliary 24 'via the couplings 16', 14 'and 22', and the switches 14 'and 18'. The assistant puts the call on "hold" and based on the identity of the mobile part (known through the PTN), retrieves the necessary information to locate the mobile part. This information may be contained in a database internal to the auxiliary or may be read from an external database (not shown). The auxiliary 24 'passes the necessary radio location information to a localizing radio service 28' via a fifth communication link 34 '. The radio location service then transmits a radio location activation signal and a calling subscriber identification signal, both intended for reception by the two way radio locator 10 '. The locator radio 10 'is equipped with: an alarm that is activated in response to the radio locator activation signal, an exhibitor that responds to the caller's identification signal, and a keypad to specify a termination number, width of band, protocol or special instructions. A mobile party that is alert to a call can verify the locator radio display, to identify the calling subscriber and / or the bandwidth and protocol of the originating station. The mobile party can then decide how to handle the call based on the information displayed. One possible treatment is to direct the call to a party phone called 32 '. The called party telephone can be a nearby telephone station or some remote telephone station, such as a secretary's station. To direct the call to the called party's telephone, the mobile party types in the telephone number, bandwidth and protocol of the party's telephone to the paging radio, using the pager's radio keypad, and then transmits the information to the paging service. radio location 28 '. Alternatively, the termination number, bandwidth and protocol can be "typed" by choosing from one or more selections provided by the auxiliary that are transmitted to the radio locator by the radio location service. In any case, the radio localization service passes the termination number to the auxiliary where it is used to direct the call. Other possible call treatments include those that can be used when the moving part is busy. If the mobile party is busy with a call when a subsequent call to the party's PTN is placed, the party can direct the subsequent call to the alternate terminating station, place the previous caller on hold and speak to the subsequent calling party. , or use the paging radio to transmit a conference call instruction to speak to both callers at the same time. Also, if the mobile party has directed the subsequent call but remains free before the subsequent calling party disconnects, the party may interrupt the addressing of the subsequent call and redirect the call to the party. In the configuration of Figure 7, the auxiliary 24 'directs the incoming call by holding the call on the auxiliary while it sends a second call from the auxiliary to the called party's telephone 32'. This second call is addressed through: communication coupling 22 ', second network switch 18 ', communication link 30', third network switch 26 ', and sixth communication link 36'. After the second call is completed, the assistant bypasses the incoming call and the second call together, so that the calling party's telephone is coupled to the called party's telephone through the auxiliary. As an alternative, the auxiliary can merge the incoming call and the second call into the second network switch, in which case the auxiliary takes the call off. Once the incoming call and the second call have been bridged or merged into a "directed call", the directed call can be answered by the mobile part on the telephone 32 '. A similar procedure can be employed to implement special call handling instructions. For example, in the case of a conference call between two callers and the mobile party, the attendant can bridge or merge the two incoming calls of the subscribers calling an outgoing call to the mobile party. Figure 6 is a schematic block diagram of a further embodiment of a communication system according to the present invention. Figure 6 is identical to Figure 2, except for the additional elements: auxiliary 73, switch 47, communication couplings 45, 49, 71, 75 and wireless link 87. The system of Figure 6 can be used to offer the subscriber all the characteristics associated with both the registration mode and the call-by-call modes of operation.

Figure 8 shows how call-by-call addressing can be implemented in an existing telephony network. As illustrated, a calling party 40 'seeks to establish communication with a mobile party, or "subscriber", 76' who is equipped with a two way radio locator 77 '. A Personal Telephone Number (PTN) is assigned to the subscriber. The calling party initiates an incoming call from a telephone 41 'by dialing the PTN of the mobile party. This incoming call is coupled to a local exchange 42 'in the locality of the subscriber calling through a telephone line 54'. The local exchange 42 'directs the call to a source access switch 44' on a trunk line 56 '. The switch 44 'may take the form of a digital switch, or an electronic switching system such as the AT & T switch "4E". Once the call has been routed to the switch 44 ', a Network Control Point (NCP) 66' receives the call signaling information, including the marked PTN, on the CCIS link 78 '. The NCP uses the dialed number to retrieve addressing information from the associated NCP database. The NCP then directs the call on a trunk line 58 'to a terminating access switch 46', which as the originating access switch, may be a digital switch or a switch 4E. The switch 46 'is connected to an auxiliary 68' via an ISDN link 80 '. The termination access switch is capable of merging calls in response to a signal from the auxiliary. The ISDN link provides the auxiliary 68 'with both the called number (Subscriber PTN) and the calling number (Automatic Number Identification Number or "ANI"). The auxiliary retrieves the current status information and subscriber registration based on the PTN. From the subscriber's record, the assistant also determines whether or not the subscriber is provisioned to receive a Personal Identification Number (PIN). If the subscriber is thus provisioned, the auxiliary 68 'plays a standard signaling announcement to the calling subscriber after which the PIN is collected from the calling subscriber by reception of up to 10 digits, indicated for example in the form of Multi- signals. Dual Tone Frequencies (DTMF). In a system using PINs, provision should be made for the case in which a calling subscriber can not provide a PIN because the calling party is a rotary or disk dialing station and for the case where a subscriber Caller does not respond to the signal. In these two cases, the auxiliary 68 'may allow a period of time or an abbreviated dialing sequence (for example #) to denote that it has no PIN. Regardless of whether or not a PIN is collected, the auxiliary 68 'proceeds to determine whether the subscriber 76' is busy with another call to the subscriber's PTN. Store this determination and then continue processing the call. At this point, the assistant plays an announcement that the system will "search" for subscriber 76 '. On a base pre-provisioned by the subscriber, the auxiliary 68 'can play an announcement to the calling subscriber 40' as a warning to remain on the line while waiting for the call termination. Meanwhile, the auxiliary retrieves the subscriber locator radio code (known from the PTN) and transmits the code together with the ANI of the calling subscriber (or PIN, if available) to a satellite station 70 'via a radio link. 82 'communication. The satellite station broadcasts the radio locator code and ANI (or PIN) to a radio location transceiver 74 'either through a satellite 72' or through a communication link 85 '. When the satellite is employed, the radio locator code and ANI (or PIN) are transmitted to the satellite via a wireless link 84 '. The satellite in turn broadcasts the radio locator code and ANI (or PIN) to the transceiver via a wireless link 86 '. The communication coupling 85 'is used when the two-day paging radio is equipped for location registration. Under the location registration scheme, the two-way paging radio periodically sends a signal from which the satellite station determines the region within which the moving part is located. Once the satellite station knows the region of the mobile part, it only requires sending the radio location information to the transceiver associated with this region. In this way, the need for a national broadcast to all satellite transceivers is avoided. In this way, when the location register is used, the satellite station 70 'can transmit the localizer radio code and ANI (or PIN) to the transceiver 74' via the communication link 85 '. It will be understood by those skilled in the art that separate communication links from the satellite station to each transceiver are not required. On the other hand, signals to a transceiver that does not link directly to the satellite station can be retransmitted from the transceiver over a transceiver network linked to the satellite station. Regardless of whether the satellite 72 'or the communication link 85' is employed, the transceiver 74 'broadcasts a radio location signal that includes a radio locator code and ANI (or PIN) to the subscriber locator radio. The spread of the transceiver 74 'to the locator radio 77' is represented by a wireless link 88 '. Upon receiving the radio signal localization of the transceiver, the subscriber is alerted to the call and responds by sending a routing signal. The subscriber can include any of a number of possible responses in the addressing signal. The subscriber may choose to direct the call to a telephone station of the subscriber selection, in which case, the subscriber uses the two-way pager to transmit the number, bandwidth and protocol of the terminating telephone station to the subscriber. transceiver. In a preferred embodiment, the alert location includes the bandwidth and / or protocol of the originating telephone 41 *. In this mode, the pager can display the bandwidth and / or protocol to the subscriber and the subscriber can then choose a terminating station of corresponding bandwidth and / or protocol. As an alternative, the subscriber may not specify a terminating station in fact, but instead may direct the call to voice mail, or some other treatment, in which case the subscriber uses the pager to transmit a number associated with the processing wanted. The independence of the radiolocation and communication paths makes it possible for the subscriber to direct calls to the subscriber's PTN, even when the subscriber is busy with a previous call. This will be valid regardless of whether the previous call is routed to the subscriber's PTN or directly to the telephone station in which the subscriber answers the previous call. In this way, in an illustrative scenario, the subscriber directs a first subscriber who calls a nearby telephone station and answers the call at that station. Then, while the first caller is speaking, the subscriber directs a second subscriber who calls a secretary, directs a third call to voicemail and so on. In this way, subsequent calls can be directed without interrupting the first call and without the first caller being aware of it. Furthermore, the subscriber can control the call parameters for each of the subsequent calls. In addition to transmitting instructions for call routing, the subscriber can transmit special call handling instructions, indicating that specific actions are to be taken, such as placing a calling subscriber on hold, switching between calling subscribers, creating a call from conference, and release a voicemail call and direct it to the subscriber. In a possible modality, these special instructions increase by assigning them a number that the subscriber sends to the transceiver in the same way that a termination number is sent. Thus, in an example of switching between calling subscribers, a busy subscriber who receives a second call can send the number 999 to the transceiver indicating that the first calling subscriber should be put on hold and that the second calling subscriber be directed to the subscriber's present telephone station. In an example of clearing a voicemail call, a busy subscriber who has directed a subsequent call to voicemail but is subsequently free to take the subsequent call, may send the number 000 to the transceiver before the subsequent calling party disconnect from voicemail, the 000 indicate that the subsequent call will have to be released, read voice mail and go to the subscriber. Regardless of the treatment for select call handling by the subscriber, the two-way paging radio transmits the addressing signal to the transceiver 74 *, as represented by the wireless link 89 *. The transceiver retransmits the transmissions from the two-way radio to the satellite station 72 *, either via satellite 72 * via wireless links 86 * and 84 *, or through 85 * communication links. The satellite station then retransmits the instructions from the subscriber to the auxiliary via the communication link 82 *, and the auxiliary responds accordingly. To direct the call to a party called 52 *, the auxiliary initiates a second call. The second call is directed to a third access switch 48 * via a trunk line 60 * (like switches 44 * and 46 *, switch 48 * can be a digital switch or a switch 4E). The third access switch then directs the second call to a local end exchange 50 * based on the termination number, bandwidth and protocol that are provided by the subscriber, the number of terminations is the called party telephone number 52 * to which the designated call will be directed. The local end exchange couples the second call to the call party telephone by telephone line 64 *. When directing the call, the auxiliary and / or second access switch may use the bandwidth and / or protocol to allocate a convenient channel for the second call and may use its knowledge of the subscriber's protocol to communicate with the subscriber in accordance with that protocol (that is, the auxiliary or second access switch can act as a protocol translator). At the end of the second call, the call from the subscriber calling the PTN (waiting in the auxiliary), and the second call, either are bridged together with the auxiliary 68 * (in which case the auxiliary remains with the call) or they are fused in switch 46 * (in which case the auxiliary is removed from the call). If the calls are bridged, the assistant can implement the characteristics of placing a calling party on hold, switching between calling subscribers, creating a conference call and interrupting a previously addressed call. Whereas if the calls are fused, the switch 46 * can implement these characteristics under the auxiliary direction. During the time interval between subscriber PTN dialing to initiate a call and the final disposition of that call (the call setup time) an elaborate announcement may be played which calls as a stimulus to remain online while the call is being made. process Figures 3, 4A and 4B will be referred to in the following discussion of the procedure for updating the termination number, bandwidth and protocol according to the call-by-call mode. The first step that the subscriber takes in updating the parameters for call control is to press the menu key 104 on the pager 100 (step 202). The word "update" will appear in the display 102. The subscriber then presses the selection key 106 to choose "update" (step 204). The word "update" will flash in the display to indicate that the subscriber can provide the update information (step 206). The subscriber can now feed the parameters for call control using the keypad 108, followed by the # key to indicate the end of the feed (step 208). To provide a special call handling instruction, such as a conference call instruction, a number associated with that instruction will be fed in instead of a termination number (step 208). A subscriber who does not want to change the call control parameters and does not want to feed a special number of instructions, can simply press the # key without typing any updated parameters. Furthermore, in a possible embodiment, the locator radio is equipped with the ability to store parameters for call control, such that sequences of abbreviated keys can be used to change the active parameters. For example, the telephone number of the subscriber's office may be stored in the memory of the paging radio in a first site, and the telephone number of the subscriber's house may be stored in the memory of the paging radio in a second site. Subsequently, when the subscriber wishes to change the termination number to the office number, the subscriber simply types 1 followed by the sign # 1. Similarly, when the subscriber wishes to change the termination number to the house number, the subscriber simply types a 2 followed by the # sign. In any case, after receiving a power #, the pager mode indicator will flash (step 210). At this point, the subscriber must choose the desired mode (step 212) (To implement call-by-call addressing, the subscriber will choose a call-by-call mode). The pager determines whether the desired mode is the current mode (step 214/222). If the subscriber desires the call-by-call mode and the current mode is not the call-by-call mode, then before the flashing mode indicator goes to continuous, the subscriber presses the selection key 106 to change the call-by-call mode (step 224). If the current mode is the call-by-call mode, the subscriber allows a period of time to pass after which the flashing mode indicator will go to continuous; or alternatively, the subscriber can press the # key to trim the time and retain the current mode (step 226). After the mode has been chosen, the pager signals the transceiver 112, sending a pager code, updated termination number, updated bandwidth, updated protocol, and a call-by-call mode indicator (step 228). After receiving the pager transmission, represented by the wireless link 111, the transceiver 112 retransmits the pager code, updated control parameters, and mode indicator to the satellite station 116 either through the wireless link 113, satellite 114 , and wireless link 115; or, when location registration is used, through communication link 117 (step 230). Finally, the satellite station retransmits the information to the assistant where it is used to direct an incoming call (step 232). At this point, the update is complete (step 234). Figures 9A and 9B show, in flow chart form, the steps taken to direct calls on a call-by-call basis. In the following discussion of Figures 9A and 9B, references will be made to Figure 8. The call-by-call procedure is invoked when the calling subscriber 40 * marks the subscriber PTN (step 302). The call is routed to the originating access switch 44 », or" OAS ", (step 304) and the OAS interrogates the NCP 66 * (step 306). The NCP returns the auxiliary addressing number (RNA) to the OAS, causing the call to be directed to the auxiliary 68 * by the terminating access switch 46 *, or "TAS A", (step 308). The terminating access switch passes the calling number, determined through the ANI, and the calling PTN to the auxiliary (step 310). The auxiliary then retrieves the subscriber record based on the marked PTN (step 312) and determines whether the subscriber has provided a PIN to be collected from the calling subscriber (step 314). If a PIN has been provided, the auxiliary 68 * plays a signal and collects the DTMF digits (step 316). If a PIN has not been provided, the procedure jumps to step 318 which will determine if the subscriber is busy (ie, if a subscriber call by the auxiliary is in progress).

If the subscriber is busy, the next step is to verify if the subscriber has Call Waiting (step 320). If the subscriber does not have Call Waiting, the call is directed to final processing, such as Voice Mail (step 402). If the subscriber has Call Waiting, the subscriber is located, the radiolocation signal includes the radio locator code, call number (or PIN), source telephone bandwidth, originating telephone protocol and a caller ID (step 404). If the subscriber does not respond to the location within a predetermined time after it is sent (step 405) the calling subscriber is "terminated" and the call is directed to final processing (step 406). The subscriber can respond within the allotted time when initiating transmission of a number of termination (or "range") bandwidth and protocol; or a conference call instruction (step 428). In the event that a subscriber responds within the allotted time, the processing of the call continues according to the steps following step 428. If it is determined in step 318 that the subscriber is not busy, the auxiliary 68 * determines whether the subscriber is taking calls or not (step 322). If the calls are not accepted, the call is directed to final processing (step 408). Otherwise, the assistant retrieves the subscriber page code (step 410) and transmits the radio locator code, call number (or PIN) and call identifier to the radiolocation service (step 412). The radiolocation service then broadcasts the information (step 414) to the pager 77 *, which alerts the subscriber and displays the call number (or PIN), the caller ID and, if available, the bandwidth and protocol of the station. of call (step 416). At this point, the subscriber can accept or reject the call (step 418). There are two ways in which the subscriber can reject the call. The subscriber can do nothing, in which case the calling subscriber will run out of time (step 420) and the assistant will direct the call to final processing (step 426). Or, the subscriber can send a rejection signal (a special instruction) to. radiolocation service (step 422) in which case the radiolocation service will retransmit the reject signal to the auxiliary (step 424) and the auxiliary will cause the call to be directed to final processing (step 426). If the subscriber chooses to take the call, the subscriber initiates the transmission of a number to reach, bandwidth and protocol by means of a two-way radiolocation 77 * (step 428). In this way, the subscriber can transmit either a number to reach it, bandwidth and protocol; or a conference call instruction of step 428 of the process. Upon receiving a number, bandwidth and protocol, the radiolocation service transmits the information and the call identification to the auxiliary (step 430). Next, the auxiliary checks whether another call is currently active from the subscriber (step 432). In the event that a call is currently active, the auxiliary checks to see if a conference call instruction was received (step 435). If a conference call instruction was not received, the auxiliary puts the active call on hold (step 434) and bridges / merges the new call to the subscriber (step 436). If a conference call instruction was received, the auxiliary bridges / merges the new call to both the subscriber and the original called subscriber (step 437). In the event that no other currently active call is found, step 434 is skipped and the auxiliary bridges / merges (step 436) the new call to the subscriber immediately after step 432. The procedure is completed by bridging / merging the call ( stage 438). Again with reference to Figure 6, the auxiliary 73, switch 47, communication links 45, 49, 75, and wireless link 87, function in the same way as counterpart elements in Figure 8 (see auxiliary 68 *, switch 46 *, communication coupling 48 *, 80 *, 82 *, and wireless link 88 *). When the call reaches switch 44, switch 44 interrogates NCP 66 which in turn interrogates CRP 68 for instructions. If the subscriber has only subscribed to the registration-type service, the call can be handled in accordance with the procedures established in connection with Figure 5. However, if the subscriber has subscribed to available features only through the call-type service -by-call, such as the conference call feature, the CRP directs the switch 44 to send the call to the auxiliary 73. Once the call has been redirected to the auxiliary, the auxiliary can handle the call according to the procedures established in connection with Figures 9A and 9B. In this way, both the record-like and call-by-call service can be offered through a configuration of Figure 6. As is an aggregate feature of the preferred embodiment of Figure 6, the auxiliary 73 is coupled to the CRP 68 by the communication link 71. Accordingly, when the CRP directs a call to the auxiliary, the auxiliary can interrogate the CRP for the subscriber registration and the current status information. In this way, the CRP can act as the database from which the assistant retrieves the necessary radiolocation information to implement call-by-call addressing.

In addition to the "registration" and "call-by-call" procedures described above, the preferred mode is capable of directing calls according to a "subsequent addressing" procedure, a "reverse calling" procedure and an "examination procedure". The subsequent addressing procedure is used to direct calls that have already been directed in accordance with one of the other procedures.To initiate subsequent addressing, the subscriber uses the two-way pager to transmit a subsequent addressing signal to the service. radio location The subsequent addressing signal includes subsequent call control parameters, for example a subsequent termination number, a subsequent bandwidth and / or subsequent protocols.These subsequent parameters may be different from those used to initially direct the call The network employs the following parameters to "reset" the call when it is completed to the subsequent station to better adapt the call to the desired subsequent parameters. The subsequent addressing signal also includes a subsequent addressing indicator. The subsequent addressing indicator serves to distinguish the subsequent addressing signal from a "record update". The two types of signals must be distinguished, since the subsequent increment requires that immediate redirection action be taken, in contrast to a registration update, which does not require immediate action, but instead configures an address that will take out at some later time. When the subsequent addressing signal is received before the original call is completed, the CRP, or auxiliary, whatever the case may be, redirects the call in the same way that an initial call is routed. When a subsequent redirect signal is received after the original call has been answered, the original call may be terminated before redirecting. Figure 10 is a flow diagram showing how subsequent addressing is implemented in the preferred embodiment of Figure 6. By definition, subsequent addressing occurs after a call has been initially addressed (step 1002). A subsequent addressing signal may be received at any time after the initial addressing. In this way, the system continuously checks to check if this signal has been received (step 1004). If a subsequent addressing signal is not received, the call routing proceeds as is normal, that is, the system checks to verify if the call has been answered (step 1012) and whether the calling subscriber and the subscriber can engage in conversation (step 1014). If a subsequent addressing signal has been received, then a series of steps is taken. First, the CRP (or auxiliary) sends a message containing the termination number, bandwidth and subsequent protocol to the NCP (step 1006). Next, the NCP passes the subsequent termination number, bandwidth and protocol to the network switch (step 1008). Finally, the network switch redirects the call (step 1010). As an alternative to steps 1006, 1008 and 1010, the assistant can redirect the call without involving the NCP or CRP. In any case, following the redirect, but before the call is terminated, another subsequent address signal may be received. In this way, an answered call is verified for termination (step 1016). If the call has not ended, the system continues to check for subsequent addressing indications (step 1018). If the call has ended, the subsequent addressing procedure loop is exited (step 1020). The reverse call procedure is invoked when a subscriber chooses to initiate a call from the desired termination station, instead of transmitting the termination station number and then wait to answer the call. This procedure can be used, for example when the telephone number of the desired termination stations is unknown. To implement the revertive call, the routing signal sent by the subscriber includes a revertive call indicator instead of a termination number. The indicator tells the network to put on hold any incoming calls addressed to the subscriber and waits for a return call from the subscriber. After the subscriber places a return call from the desired terminating station, the return call and the incoming call are bridged (or merged) to direct the call from the subscriber calling the subscriber. In addition to the revertive call indicator, the subscriber may include in the addressing signal, the bandwidth and protocol of the telephone station from which the subscriber plans to dial the return call. In any case, the revertive call may be of the "call-by-call" type, where the subscriber provides a revertive call indicator, in response to a location or of the "record" type where a revertive call indicator is searched of CRP (or auxiliary) without first radiolocalizing the subscriber. The call examination procedure is invoked when a subscriber chooses that the network automatically directs incoming calls to a call party communication device more capable of supporting the calling party's communication device. In this method, the addressing signal only requires to include a location indicator, which is associated with a location where one or more call party communication devices are present. The parameters of the call communication device such as bandwidth and protocol, for each of the so-called possible party communication devices associated with the location, are stored in the CRP (or auxiliary) in a previously arranged base. The routing of a call through a call exam proceeds as follows. When initiating a call to a subscriber, the network notices that a subscriber location indicator has been received - either through a "registration" or "call-by-call" service. The network then "examines" the call to determine the parameters of the calling party's communication device (eg, bandwidth and protocol of the caller's communication device). This test is known in the art; and in light of this description, applying this examination in the present invention will be apparent to a person skilled in the art. Once the call has been examined, and the parameters of the calling party's communication device have been determined, the network compares them with parameters of the call party communication devices for the given location. The call is directed to the called party communication device that is in the determined location and has parameters that correspond more closely to those of the caller's communication device. Parameter matching can be done through the use of an algorithm, lookup table or any other well-known method. The call-by-call, reverse call, and call screening procedures discussed above require that an alert radiolocation message be sent to the subscriber and that the network maintain the incoming call while awaiting the subscriber's response. However, in those situations in which the subscriber has switched off his / her pager, the subscriber does not bring the pager, the pager is out of range or the pager battery is depleted, the pager is "unreachable". In this way, the alert radiolocation message will not be received and a response will not be sent. To take these situations into account, a pager status feature is included in a preferred embodiment of the invention. The pager state feature will be described below in the context of call-by-call addressing. From the description, the implementation of the feature in the other procedures will be apparent to a person skilled in the art. Figure 11 is a flowchart showing the additional call routing steps that must be carried out when the call-by-call addressing service of the present invention includes a pager status feature. The steps illustrated in the flowchart are the same as those illustrated in the flow chart of Figure 9a, except that a pager status branch is included, consisting of three stages (steps 313, 315 and 317). In accordance with the call-by-call addressing procedure previously described, step 312 involves recovering the subscriber record. When a pager status feature is implemented, this record includes an indication of whether or not the pager is reachable. To generate this indication, the radiolocation service itself or in response to a request from the network, may periodically interrogate the radiolocator using a radio-localization message to which the two-way pager must respond automatically, that is, it shall respond without requiring any intervention of the user. The result of the radiolocation service interrogation is placed in the subscriber's register and serves as the status indicator. Following recovery of the subscriber record, the network determines whether the pager is achievable (step 313). If the pager is achievable, call-by-call routing processing proceeds as usual, continuing with step 314. If the pager is not reached, the incoming call is routed to a predefined station that is associated with a number. predefined, such as the most recently registered termination number or a voice mail number (step 315). In this way, an alert radiolocation message is not sent to a pager that can not be reached. After redirecting to the predefined number, the processing of calls to a subscriber with a pager that is not reached is complete (step 317). In a preferred embodiment, the two way pager is equipped with an "automatic disconnect" switch. In an implementation of an automatic disconnect switch, which is suitable for use in the present invention, a body temperature sensor is coupled to the radiolocator, such that when the pager is removed from the subscriber's person, the detector senses a temperature reduction and triggers the pager's disconnect switch. In this way, when the subscriber does not use the pager, the pager automatically turns off and remains unreachable. In this way, the automatic disconnect switch prevents location messages from being sent to a subscriber who is not likely to receive the message because the subscriber does not bring the pager. As an added feature, before turning off, the pager can initiate the transmission of a notification signal to the network, indicating that the pager is not reached. When this feature is employed, the network is immediately notified that the subscriber is not transporting the pager, and thus there is no intermediate period of interrogation during which an unused paging message may be sent. While the best mode for carrying out the invention has been described in detail, those familiar with the art to which the invention relates will recognize various designs and alternate embodiments for practicing the invention as defined by the following claims. It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention. Having described the invention as above, property is claimed as contained in the following:

Claims (21)

1. CLAIMS 1. A system for directing a call that starts from a first communication device and is directed to a personal telephone number of the called party, characterized in that it comprises: a) means to determine if an associated two-way pager is reached with the personal telephone number of the called party; b) means for causing the call to be directed to a predefined station when the two-way pager is not reached; when determining and triggering are achieved without sending a message to the two-way pager in response to the call.
2. 2. A system according to claim 1, characterized in that the two-way pager is equipped with an automatic disconnect switch, which when activated causes the two-way pager to be unreachable.
3. 3. A system according to claim 1, characterized in that it further comprises: means for receiving one or more call control parameters, the parameters originate from the two-way radiolocator and are associated with a second communications device; and means for directing the call to the second communications device when the two-way pager is achievable.
4. 4. A system for directing a call that is initiated from a first communication device and directed to a called party's personal telephone number, characterized in that it comprises: a) means for determining whether a two-way pager associated with the personal telephone number the called party is reachable; b) means to take a predefined action when a two-way pager is not reached; where determination and action taking are achieved without sending a message to the two-way radiolocator in response to the call.
5. A system according to claim 4, characterized in that the means for taking a predefined action comprise means for causing the call to be directed to a predefined station.
6. 6. A method for directing a call that is initiated from a first communication device and addressed to a personal telephone number of the subscriber, the subscriber is equipped with a two-way radio pager, characterized in that it comprises the steps of: a) determining if the two-way radiolocator is reachable; b) when the two-way pager is unreachable, direct the call to a predefined station; wherein the determination is made without sending a message to the two-way pager in response to the call.
7. 7. A method according to claim 6, characterized in that when the two-way radiolocator is achievable, the method further comprises the steps of: receiving one or more call control parameters, the call control parameters originate from the two-way pager routes and are associated with a second communication device; and using the call control parameters to direct the call to the second communications device associated with the parameters.
8. A method according to claim 7, characterized in that the step of using the call control parameters to direct the call comprises the steps of: coupling the call to a voice response unit; use the voice response unit to collect one or more digits supplied; automatically sifting the call based on the provided digits, to determine whether the call will be directed to a second communication device associated with the call control parameters or to address alternate processing; and direct the call in response to the result of the classification.
9. 9. A method according to claim 7, characterized in that it further comprises the steps of: receiving one or more subsequent call control parameters, the subsequent parameters originate from the two-way pager and receive after the control parameters were used in the use stage to direct the call to the second communication device; and using the subsequent parameters here to redirect the call to a third communication device.
10. 10. A method in accordance with the claim 6, characterized in that when the two-way pager is reached, the method further comprises the steps of: receiving and storing one or more call control parameters in a database before the start of the call, the call control parameters originate from the two-way pager and are associated with a second communication device; retrieve the call control parameters of the database; and using the call control parameters to direct the call to the second communication device.
11. 11. A method in accordance with the claim 6, characterized in that when the two-way radiolocator is achievable, the method further comprises the steps of: recovering a radiolocation code for the subscriber; initiate a message to the subscriber; receiving one or more call control parameters, the call control parameters are originated by the subscriber, using the two-way pager in response to the message and associated with a second communication device; and using the call control parameters to direct the call to the second communication device.
12. 12. A method according to claim 6, characterized in that when the two-way radiolocator is reachable, the method further comprises the steps of: receiving a revertive call indicator, the revertive call indicator originates from the two-way pager by the subscriber , putting the call on hold in response to receiving the callback indicator until a callback is initiated from a second communication device; and bridging the call to the second communication device in response to the callback.
13. 13. A method according to claim 6, characterized in that when the two-way pager is achievable, the method further comprises the steps of: receiving a paging indicator, the paging indicator (i) has been supplied by the paging radiolocator. two routes in response to an action by the subscriber, and (ii) is associated with a location where one or more second communication devices are present; determine a characteristic of the call; comparing the characteristic of the call with one or more characteristics of one or more second communication devices, to determine a second communications device of better correspondence; and directing the call to the second communications device of best correspondence.
14. 14. A method according to claim 6, characterized in that when the two-way radiolocator is achievable, the method further comprises the steps of: receiving a location indicator, the location indicator (i) has been supplied by the two way pager in response to an action by the subscriber, and (ii) is associated with a location where one or more second communication devices are present; determine a bandwidth of the call; comparing the call bandwidth with one or more bandwidths of one or more second communication devices, to determine a second communication device of better correspondence; and directing the call to the second communications device of best correspondence.
15. 15. A system in accordance with the claim 6, characterized in that when the two-way radiolocator is achievable, the method further comprises the steps of: receiving a location indicator, the location indicator (i) is supplied by the two-way radiolocator in response to an action by the subscriber , and (ii) is associated with a location where one or more second communication devices are present; determine a protocol used for the call; comparing the calling protocol with one or more compatible protocols with the one or more second communication devices, to determine a second communication device of better correspondence in said location indicated by the location indicator; and directing the call to the second communications device of best correspondence.
16. 16. A method in accordance with the claim 6 characterized in that when the two-way radiolocator is achievable, the method further comprises the steps of: determining an identification number for the first communication device; automatically classify the call based on the identification number, to determine if the call will have to be processed to terminate the subscriber; and direct the call in response to the result of the classification.
17. 17. A method according to claim 6, characterized in that when the two-way pager is achievable, the method further comprises the steps of: receiving and storing one or more call control parameters in a database before the start of the call, the call control parameters originate from the two-way pager and are associated with the predefined station; retrieve the call control parameters of the database; and use the call control parameters to direct the call to the predefined station.
18. 18. A system for directing a call that is initiated from a first communication device and addressed to a subscriber, the subscriber is equipped with a two-way radio pager, the system is characterized in that it comprises: (a) means for (i) determining before of call initiation, if the two-way pager is achievable, and (ii) directing the call to a predefined station when the two-way pager is determined to be unreachable; (b) means for receiving one or more call control parameters when the two-way pager is determined to be reachable, the parameters originate from the two-way pager and are associated with a second communication device; and (c) means for using call control parameters to process the call to complete in the second communication device when the two-way pager is achievable.
19. 19. A system according to claim 18, characterized in that the two-way pager is equipped with an automatic disconnect switch, which when activated causes the two-way pager to be unreachable and notifies the means to determine that the pager Two-way is unattainable.
20. 20. A system for directing a call that is initiated from a first communication device and directed to a subscriber, the subscriber is equipped with a two-way radio pager, the system is characterized in that it comprises: (a) means for determining whether the Two-way pager is reachable without sending a message to the two-way pager in response to the call; and (b) means for directing the call to a predefined station when the two-way pager is unreachable.
21. 21. A system according to claim 20, characterized in that the two-way pager is equipped with an automatic disconnect switch, which when activated, causes the two-way pager to be unreachable and notifies the means to determine that it is unreachable the two-way radiolocator. SUMMARY OF THE INVENTION The present invention relates to a system and method for using two-way radiolocation to establish communications with a mobile party having a personal telephone number. The mobile party phone is equipped with a two-way pager that can use the party to provide call control. The pager is interrogated periodically by a network and / or radiolocation service to determine whether or not the pager is reachable. If the pager is unreachable, and a call is subsequently routed to the party's personal telephone number, it redirects the call to a predefined station. If the pager is achievable, any of a number of alternate call routing procedures may be invoked including: addressing of record type, call-by-call addressing, revertive call, call exam routing and subsequent addressing. In a possible mode, a Client Address Point is used to store the pager status together with other call routing information, and a network control point is used to carry out the appropriate addressing procedure. Other possible modes include: using an auxiliary to perform the functions of client addressing point and network control point; and combine an auxiliary with a client addressing point and a network control point.