Apparatus and method for processing a freephone number telephone call

Abstract: Apparatus and method for providing an on-site 800 number customer-made determination of a further action to be taken in response to a caller dialling an 800 number associated with the 800 number customer. A system 10 includes apparatus for receiving from an 800 number network provider Host processor 26 information expressive of an occurrence of a caller having dialled an 800 telephone number. The system 10 further includes apparatus for determining at a customer's Host processor 12 an action to be taken in response to the caller having dialled the 800 telephone number. The system also includes apparatus for transmitting from the customer's Host processor to the network provider's Host processor 26 information expressive of the determined action to be taken in response to the caller having dialled the 800 telephone number. The information received by the customer's Host processor includes an identification of the caller as provided by the caller's billing telephone number. The determined action may be to deny or to accept the call. If the call is accepted the customer's Host 12 determines a destination phone number that is provided to the network provider's Host processor for further transmission to the caller's local Host processor.

Description: FIELD OF THE INVENTION: This invention relates generally to telephony and, in particular, to apparatus and method for providing an enhanced Freephone number service using a Freephone number customer's on-premise host computer. BACKGROUND OF THE INVENTION: Traditional Freephone number phone service is supplied by a telephone network provider to allow billing to be assumed by the called party. In the US, this Freephone service is provided via an 800 number. Typically, upon detecting an 800 number the network provider host computer communicates with an 800 server host via a Signalling system 7 (SS7) link that is external to and separate from normal voice links. The 800 server host maintains a data base of destination phone numbers that correspond to 800 numbers in order to look-up the corresponding destination phone number for the 800 number. In addition, the 800 server host data base includes information relating to destination phone numbers also as a function of time of day, geographical region of the originating call, etc. For example, an 800 number call placed between nine and five from Oregon to a catalogue ordering number may be routed to a catalogue ordering office in California. Another call to the same 800 number and at the same time but made from Delaware may be routed to a catalogue ordering office in New Jersey. However, the same 800 number call placed at, for example, ten P.M. local time from either Oregon or Delaware may be routed to a catalogue ordering office in Chicago, the Chicago office being the only office that is staffed 24 hours a day. While providing the 800 number customer with a significant degree of flexibility and convenience the conventional 800 number call processing approach described above also presents several limitations. one such limitation is that the conventional 800 number call processing approach does not provide for a dynamic allocation of a destination phone number or phone numbers. For example, due to call overloading at one office or at one agent within an office it may be desirable to temporarily route further incoming 800 number calls to a different destination phone number. Another limitation is that the conventional 800 number call processing approach does not provide a capability to allocate a destination phone number based upon a caller's identity, as determined via Automatic Number Identification (ANI) from the caller's telephone number at the destination site. A paper entitled "ISDN Opportunities for Large Business - 800 Service Customers" by Friedes et al, p28-32 in IEEE International Conference on Communications, vol 1/3, 22 June 1986, Tokyo, reviews advanced 800 features, and discusses how ISDN capabilities would allow 800 customers to control routing of calls. Using ISDN for example, each of the customer's locations could periodically inform the network about the status of its call handling capabilities, and the network intelligence could then select the best location to which to send each call. A similar solution is also described in "ISDN: Integrated Network Premises Solutions for Customer Needs", by Gawrys et al, p 2-6 in IEEE International Conference on Communications, vol 1/3, 22 June 1986, Tokyo. US 4,757,267 describes a telephone system which automatically connects a potential customer with a nearby dealer in response to an 800 call. In one embodiment (see columns 27-28) a customer dealer service company (CDSC), which supports many 800 numbers, is connected to the processor of the long distance carrier (LDC). For each call, the LDC processor sets up a data call to a database computer at the CDSC. Using information supplied about the dialled 800 number, the CDSC selects an appropriate dealer from its database, and returns the telephone number for this dealer to the LDC processor, which can then route the call to the selected dealer. DISCLOSURE OF THE INVENTION Accordingly, the invention provides a method of processing a Freephone number telephone call, wherein the called party's system has a plurality of phones associated with Freephone number destination phone numbers, the plurality of phones being managed by a digital switch, the called party's system further including a Host processor coupled to the digital switch, and means for bidirectionally coupling the called party's Host processor to a Freephone number network provider's Host processor, the method comprising the steps of, in response to a caller dialling a Freephone telephone number: (a) transmitting from the Freephone number network provider's Host processor to the called party's Host processor information expressive of the occurrence of the caller having dialled the Freephone number; (b) determining at the called party's Host processor an action to be taken in response to the caller having dialled the Freephone number; (c) transmitting from the called party's Host processor to the network provider's Host processor information expressive of the determined action to be taken in response to the caller having dialled the Freephone number; and (d) if the called party's Host processor does not transmit the information expressive of the determined action within a predetermined interval of time, transmitting from the network provider's Host to the called party's Host processor default information including an indication that the network provider's Host processor has provided a default destination telephone number associated with the Freephone number. A Freephone number call is a telephone call in which the called party assumes responsibility for the payment of the call. A Freephone service is offered by the telephone networks to customers who wish to receive Freephone number calls. In the US such a service is referred to as an 800 number service, since all Freephone numbers include this prefix, whilst in the UK Freephone numbers have the prefix 0800. The invention is applicable to all Freephone numbers no matter how they are obtained, and provides method and apparatus for processing a Freephone number telephone call in a Freephone number customer's phone system. Preferably the step of determining includes a step of determining whether to accept or deny the call based at least in part upon load balancing considerations. Since the called party's Host Processor is coupled to the digital switch, such considerations can be made directly by the called party's Host processor without supplementary information being sent from the network provider's Host processor. It is also preferred that the first step of transmitting includes the step of sending a first data packet from the network provider's Host processor to the called party's Host processor, the first data packet being comprised of data fields expressive of at least: (a) an identification of the caller; (b) the Freephone number dialled by the caller; and (c) a reference number. It is further preferred that the step of determining includes a step of determining whether to accept or deny the call based at least in part upon the caller's identification, and preferably also includes the step of determining a destination phone number to which to connect the caller, the second step of transmitting then including a step of sending a second data packet from the called party's Host processor to the network provider's Host processor, the second data packet being comprised of data fields expressive of at least: (a) the destination phone number; and (b) the reference number. If there is too long a delay between the network provider's host transmitting the first data packet to the called party's host, and receiving the second data packet back from it, then the network provider's host will take some default action. It is desirable that in all cases the network provider's Host processor returns a message to the called party's Host processor including information expressive of the action taken, and particularly whether or not a default number was used due to a delay in the network provider's host processor receiving information. Preferably the third step of transmitting includes a step of sending a third data packet from the network provider's Host processor to the called party's Host processor, the third data packet being comprised of data fields expressive of at least: (a) the default destination phone number; and (b) the reference number. In the above method the caller's identification can be sent by sending the caller's billing telephone number, and the step of determining can include a step of accessing a data base associated with the customer's Host processor, the database being accessed in accordance with the caller's identification, and can also include a step of determining a destination phone number to which to connect the caller based at least in part upon the caller's identification. Typically the first data packet is sent over a Signalling System 7 communications link, and the step of sending the first data packet includes the step of receiving the first data packet with the interface means, the interface means being interposed between the customer's Host processor and the Signalling System communications link. The invention also provides apparatus for processing a Freephone telephone call, wherein the called party's phone system has a plurality of phones associated with Freephone number destination phone numbers, the plurality of phones being managed by a digital switch means, the system further including a Host processor coupled to the digital switch, and an interface means for bidirectionally coupling the Host processor to a Freephone number network provider's Host processor, the apparatus comprising: means for receiving from the Freephone network provider's Host processor information expressive of the occurrence of a caller having dialled a Freephone telephone number; means for determining at the called party's Host processor an action to be taken in response to the caller having dialled the Freephone telephone number; means for transmitting from the called party's Host processor to the network provider's Host processor information expressive of the determined action to be taken in response to the caller having dialled the Freephone telephone number; and means responsive to the called party's Host processor not transmitting the information expressive of the determined action within a predetermined interval of time, for transmitting from the network provider's Host processor to the called party's Host processor default information including an indication that the network provider's Host processor has provided a default destination associated with the Freephone number. Preferably the received information comprises a first data packet having fields expressive of at least: (a) an identification of the caller; (b) the Freephone number dialled by the caller; and (c) a reference number. It is further preferred that the means for determining includes means for determining at least a destination phone number for the Freephone number call and wherein the transmitting means includes means for transmitting a second data packet from the called party's Host processor to the network provider's Host processor, the second data packet being comprised of data fields expressive of at least: (a) the destination phone number; and (b) the reference number. Preferably the means for determining also includes means for determining whether to deny the dialled Freephone number call or whether to determine a destination phone number for the Freephone number call, the second data packet further including a data field expressive of the Freephone number call being denied or accepted by the determining means. Typically the receiving and transmitting means comprise means for interfacing to a Signalling System 7 communications link, the first data packet being transmitted over the Signalling System 7 communications link; and the interface means comprises processor means having Signalling System 7 interface means, the processor means further having means for bidirectionally coupling the processor means to the called party's Host processor for transmitting information thereto and for receiving information therefrom. Normally the apparatus further includes data base means associated with the called party's Host processor, the data base means being accessed in accordance with the caller's identification, and the network provider's Host processor includes means for performing the determined action in response to the network provider's Host receiving the information expressive of the determined action. From another aspect the invention also provides a method of processing a telephone call of the type in which a called party assumes responsibility for payment of a call made to a specific telephone number, the called party having a phone system having a plurality of phones associated with destination phone numbers, the plurality of phones being managed by a digital switch, the system further including an interface means for bidirectionally coupling the called party's system to a network provider's system, the method comprising the steps of, in response to a caller dialling the specific telephone number: (a) sending from the network provider's system to the called party's system first information units expressive of the occurrence of the caller having dialled the specific number, the first information units including an identification of the caller and the specific telephone number dialled by the caller; (b) determining with the called party's system an action to be taken in response to the caller having dialled the specific telephone number; and (c) returning from the called party's system to the network provider's system second information units expressive of the determined action to be taken in response to the caller having dialled the specific telephone number, the second information units including: a destination phone number; and (d) sending from the network provider's system to the called party's system third information units, the third information units including an action taken by the network provider's system, wherein the action taken information indicated that the called party's system has not returned the second information units within a predetermined interval of time and wherein the third information units include a default destination telephone number supplied for the caller by the network provider's system. Preferably the second information units further include a call status indication for indicating that the called party's system has determined to deny the call or has determined to accept the call. It is also preferred that the first, second and third information units all include a call reference identifier. In other words the invention provides apparatus and method for processing a Freephone number telephone call at a Freephone number customer's phone system. The customer's phone system is of a type that includes a plurality of phones associated with Freephone number destination phone numbers. The plurality of phones are managed by a digital switch, such as a CBX. The system further includes a customer's Host processor coupled to the digital switch. The customer's Host processor typically includes memory for storing data structures and application programs, including a data base of caller's billing numbers and possibly other data for identifying Freephone number callers. The system further includes an interface bidirectionally coupling the Host processor to a Freephone number network provider's Host processor, and apparatus for receiving from the Freephone number network provider's Host processor information expressive of the occurrence of a caller having dialled a Freephone telephone number. The system further includes apparatus for determining at the customer's Host processor an action to be taken in response to the caller having dialled the Freephone telephone number, and apparatus for transmitting from the customer's Host processor to the network provider's Host processor information expressive of the determined action to be taken in response to the caller having dialled the Freephone telephone number. The information received by the customer's Host processor preferably includes an identification of the caller, such as provided by the caller's billing telephone number. The determined action may be to deny or to accept the call, and if the call is accepted, the system determines a destination phone number that is provided to the network provider's Host processor for transmission to the caller's local Host processor. As such, the invention provides for an on-site Freephone number customer-made determination of a further action to be taken in response to a caller dialling a Freephone number associated with the Freephone number customer. This further action may include denying an acceptance of the call based upon the caller's identity or upon call load factors. The further action may instead include the determination of a destination phone number based on such factors as load balancing considerations or upon the caller's identity. The invention therefore provides an enhanced method and apparatus for Freephone number call processing at a Freephone number customer's site, capable of performing a dynamic allocation of destination phone numbers corresponding to a Freephone number, the allocation being based upon such criteria as call loading or upon the identity of a caller as determined from the caller's telephone number and the Freephone number called for service. A further advantage of the invention is that it provides a method and apparatus for denying at a Freephone customer's site a pefiding Freephone number call, the pending Freephone number call being denied based upon criteria such as call loading or the identity of a caller as determined from the caller's telephone number. BRIEF DESCRIPTION OF THE DRAWINGS The above and other features of the invention will be made more apparent in the ensuing Detailed Description of the Invention when read in conjunction with the attached Drawings, wherein: Fig. 1 is a block diagram illustrating the major functional blocks of a telephony system embodying the invention; Fig. 2 is a flow chart illustrating a method according to the invention; Fig. 3 illustrates a format of a data packet that is transmitted from a Freephone number Network Provider's Host to the customer's Host; Fig. 4 illustrates a format of a data packet that is transmitted from the customer's Host to the Network Provider's Host; and Fig. 5 illustrates a format of a data packet that is transmitted from the Freephone number Network Provider's Host to the customer's Host in response to the transmission of the packet illustrated in Fig. 4. DETAILED DESCRIPTION The ensuing description of the invention is made in the context of a system employing "800" type phone numbers well-known in the US, although the invention can be practised with Freephone numbers having other than this specific prefix that allow a called party to assume the billing for the call, such as 0800 in the UK. Fig. 1 illustrates in block diagram form a telephony system, in particular a Call Management Control System (CMCS) 10 that embodies the teachings of the invention. System 10 in a presently preferred embodiment of the invention includes a Freephone number customer's host processor (Host) 12 coupled via a Logical Unit (LU) 6.2 interface to a digital switch, such as a Computerised Branch Exchange (CBX) 14. Particularly suitable apparatus that embodies these functional blocks is described in detail in commonly assigned U.S. Patent No. 4,805,209, issued February 14, 1989. Although the ensuing description is made in reference to a hardware and software system as described in U.S. Patent 4,805,209 it should be realised that the teaching of the invention is not limited for use with only such a system and that, instead, the teaching of the invention is applicable to a large number of possible hardware and/or software embodiments. An Freephone number customer as used herein is intended to encompass individuals or other entities that assume responsibility for payment for telephone calls made to a specific Freephone telephone number. The Host 12 may be a type of IBM System/370 processor, a description of which is found in a document entitled "5/370 Reference Summary, GX20-1850", published by the International Business Machines Corporation. While the Host 12 in a presently preferred embodiment of the invention is an 5/370 processor, it should be realised that the invention can be practised with other mainframes, minicomputers and microprocessors. The CBX 14 may be a CBX known in the art as a ROLM CBX II 9000, a description of which is found in a document entitled "ROLM CBX II 9000 Business Communications System", published by the ROLM Corporation (1986). It should be realised however that the invention can be practised with other varieties of CBX equipment. The LU 6.2 communication link between the Host 12 and the CBX 14 is a standard System Data Link Control (SDLC) communication link that corresponds to the LU 6.2 standard. A detailed description of a LU 6.2 communication link and a description of how to implement a program interface to conform with this standard is provided in the following documents published by the International Business Machines Corporation: "Systems Network Architecture: Sessions Between Logical Units, GC20-1868" and "SNA Transaction Programmer's Reference Manual For LU 6.2, GC30-3084". In other embodiments of the invention the link between the Host 12 and the CBX 14 may be other than a communication link that conforms to the LU 6.2 standard. As described in U.S. Patent No. 4,805,209 there are coupled to Host 12 a plurality of user interface terminals, shown herein as terminals 16 (TERM 1 through TERM m). Coupled to CBX 14 are a plurality of phones, shown herein as phones 18 (PHONE 1 through PHONE n). Also coupled to CBX 14 is a phone trunk (not shown) containing voice-carrying signal lines. At least some of the phones 18 are associated with Freephone number destination telephone numbers. That is, at least some of the phones 18 are associated with telephone numbers into which a particular Freephone number is translated. In accordance with the invention system 10 is further provided with an interface communication link 24 to a Freephone number Network Provider's Host computer 26. In a presently preferred embodiment of the invention the link 24 is a Signalling System No. 7 (SS7) communication link that is coupled to the Host 12 via a SS7 Server 22. In a presently preferred embodiment of the invention the SS7 Server 22 is a stand alone computer such as an IBM PS/2 computer. A communication link 20 such as a R5-232C communication link bidirectionally couples the SS7 Server 22 to the Host 12. SS7 Server 22 includes circuitry and software to interface with the SS7 communication link 24 to transmit information to and receive information from the Freephone number Network Provider's Host computer 26. Signalling System No. 7 was defined by C.C.I.T.T. Study Group XI during the study period 1976-80 resulting in a specification of the No. 7 common channel signaling being approved by the C.C.I.T.T.'s plenary assembly in November 1980. The characteristics of the Signalling System No. 7 are set forth in C.C.I.T.T. Document AP VII No. 18-E: Specification of the C.C.I.T.T. Common Channel Signalling System No. 7: July, 1980. The invention is however not to be construed to be limited for use only with a SS7-type communication link. Network Provider's Host 26 is typically located at some distance from the SS7 Server 22 while the Host 12, CBX 14 and SS7 Server 22 are typically located in substantial proximity to one another on-site at a Freephone number customer's premises. From the link 24 the SS7 Server 22 receives information relating to pending Freephone number calls and to the link 24 is transmitted information related to such calls, as will be described in detail below. It should be realised that in other embodiments of the invention that the functionality of the SS7 Server 22 may be included within the Host 12. Further in accordance with the invention the Host 12 is coupled to a data base 12A, the data base 12A containing information for relating caller's billing numbers, that is a caller's identification or ID, with destination phone numbers. This aspect of the invention is described in detail below. The data base 12A is typically maintained within the memory of the Host 12 along with other data structures and application programs, including a program or programs operable for realising the method of the invention. Referring now to Fig. 2 there is shown in flowchart form the interaction between the customer's Host 12, SS7 Server 22 and the Freephone number Network Provider's Host 26. A caller dials a Freephone number and the reguest for Freephone number service is transmitted in a conventional manner via a SS7 communication link from the caller's local switching element (not shown) to the Freephone number Network Provider's Host 26 (block 30). In a conventional Freephone number processing system the Network Provider's Host 26 determines, from a data base, a destination number corresponding to the Freephone number and returns the destination number via the SS7 communication link to the caller's local switching element for further call processing. In accordance with the invention at block 32 the Network Provider's Host 26 instead sends via the SS7 link 24 and the SS7 Server 22 to the Host 12 a communications packet 32A. The packet 32A indicates that a caller has dialled a Freephone telephone number associated with the customer. As shown in Fig. 3 the communications packet 32A includes data fields expressive of at least the caller's identification, that is the caller's billing phone number, the Freephone number dialled and a call reference number. The SS7 Server 22 receives the data packet 32A and transmits same via communication link 20 to Host 12. At block 34 the customer's Host 12 accesses the data base 12A and makes a determination as to whether to deny or to accept the Freephone number call. As will be described later this determination may be based on a number of criteria such as whether the caller should be denied for a security reason or for some other reason. The customer's Host 12 maintains within the data base 12A caller phone numbers such that the caller's phone number, previously received from the Network Provider's Host 26 within data packet 32A, can be compared against the database of stored telephone numbers. If a decision is made to deny the call at block 36 the Host 12 sends to the Network Provider's Host 26 via the SS7 Server 22 a message, the format of which is described in detail below, that the call is denied. Thereafter, at block 38, the call is denied by the Freephone number Provider's Host 26 to the caller's local switching element (not shown). This denial is consistent with current denial practices such as a recording spoken to the caller indicating that this Freephone number is not accessible by the caller or such as by an error tone. Returning to block 34 if a decision is made to accept the incoming Freephone number call the method transfers to block 40. At block 40 the Host 12 makes a determination of a destination phone number, that is, the identity of one of the phones 18 for answering the impending Freephone number call. This determination is made based in part on the previously provided caller's ID in conjunction with data base 12A. A number of criteria may be employed at this step in order to influence the determination of the destination phone number. As will be described in detail below these criteria may relate to system call loading, a contractual agreement with the caller as to a particular grade of service, etc. At block 42 the customer's Host 12 returns to the Freephone Network Provider's Host 26 via the SS7 Server 22 a data packet 42A having data fields expressive at least of the determined destination phone number, the call reference number previously provided and a call status indicator. The format of this returned data packet 42A is shown in Fig. 4. As can be seen, the call reference number enables the Network Provider's Host 26 to associate the received destination phone number with a previously sent Freephone number. The call status field contains a response code whereby the Host 12 indicates, for example, that the packet 42A is to receive normal processing by the Host 26 or that the Freephone number call is denied. Normal processing being indicated causes the Host 26 to return the Host 12 determined destination phone number to the caller's local switching element (not shown). Call denial being indicated may cause, for example, the Host 26 to provide a busy tone or cause a recorded message to be played for the caller. The content of the destination phone number field may be ignored by the Host 26 when the call status field indicates that the call is denied. At block 44 the Network Provider's Host 26 processes the Freephone number call to direct the call to the returned destination phone number. That is, the destination phone number is returned in a conventional manner to the caller's local switching element (not shown). Also at block 44 the Host 26 preferably returns an acknowledgement data packet to the Host 12, such as the packet 44A shown in Fig. 5. Acknowledgement data packet 44A includes a data field for the call reference number and a data field for indicating the disposition of the Freephone number call. For example, the call disposition indicates that the Host 12 determined call destination number was successfully returned to the caller's local switching element. This data field may also indicate that a predetermined time-out expired, due to non-response by the Host 12, and that the Host 26 instead processed the Freephone number call request by conventional methods to return a default destination number to the caller. In accordance with this latter indication the Host 26 may also provide an additional data field for informing the Host 12 of the identity of the default destination number provided for the caller. As can be realised, the Network Provider's Host 26 is modified to communicate in the manner described above with the Host 12 via the SS7 communication link 24. This additional functionality of the Network Provider's Host 26 is readily provided by computer software change. Furthermore, the Network Provider's Host 26 is preferably modified such that it has knowledge of which Freephone number customers have the system 10 of the invention installed. For those Freephone number customers not having the system 10 of the invention the Network Provider's Host 26 operates in a conventional manner to determine destination telephone phone numbers. The modification may be readily achieved by modifying the Network Provider's Host 26 data base to indicate which Freephone number customers have the system 10 of the invention installed. Preferably the Network Provider's Host 26 operates such that if the response at block 42 is not received from the customer's Host 12 within some predetermined time-out interval the Network Provider's Host 26 defaults to the conventional method of determining the Freephone number from the Network Provider's Host 26 own data base of default destination phone numbers. This time-out period may be typically six to eight seconds. This latter functionality provides for a backup capability for those instances when the Host 12 is off-line. Further in accordance with the invention the step 40 described above, wherein the Host 12 determines a call destination phone number, may be accomplished by a number of different techniques employing various criteria. For example, the determination may involve a load balancing consideration wherein the determination of which call destination among multiple possible call destinations is made is based on which destination is currently least congested. One suitable method for making such a determination is disclosed in commonly assigned copending U.S. Patent Application US-A-4 949 373, filed January 6, 1989. As another example the determination may involve a customer site where a specific Freephone number call centre may have multiple destination phone numbers that are all serviced by the same agent group. However, the choice of one particular call destination number over another may result in a different queuing priority with a resulting different time to service. In this case the destination number chosen may be related to the business importance of the caller, such as the volume of business conducted by the caller, or to a contractual agreement for a certain grade of service with the caller. The caller is identified by the Host 12 from the caller's ID as received from the Network Provider's Host 26 at step 32 of Fig. 2. Information related to caller priorities are typically stored within the data base 12A associated with the caller's telephone number(s). As another example the destination number may be a reserved number given temporarily to that particular caller so that the caller enters a destination switch and is processed to that reserved number, as disclosed in copending U.S. Patent US-A-4 949 373. When the caller comes into the destination switch the teaching of copending U.S. Patent US-A-4 949 373 provides for an event to be sent to the Host 12 from the destination switch notifying the Host 12 that a call to the destination number reserved for the caller has been completed. This procedure advantageously provides for the Host 12 to associate other caller account information about the caller and to initially display this information on a TERM k associated with a specific agent's PHONE k. The identity of the PHONE k is determined from the caller's billing number identification. As such, this information is subsequently employed in conjunction with the intelligent answering capability that is a feature described in U.S. Patent No. 4,805,209. In accordance with a still further example of the capability provided by the method and apparatus of the invention Freephone number service may be denied a caller at steps 34 and 36 above based upon criteria such as a caller's identification not being allowed due to a security consideration. Another criteria may relate to a call centre overload determination, such as in a disaster recovery situation, in order to limit the number of incoming calls to a centre during times of overload. As a still further example a caller's billing number is related by the Host 12 through data base 12A to a caller's business profile and a destination phone number associated with a particular service group assigned to the business profile is selected. This selected destination phone number is returned to the SS7 Network Provider's Host 26 at step 42 of the method shown in Fig. 2. As an example, all insurance customers of a Freephone number customer may dial a single Freephone number. However, callers identified by Host 12 as senior care policyholders may be directed to a different service group than callers identified as Workman's Compensation callers.

Claims: A method of processing a Freephone number telephone call wherein the called party's phone system has a plurality of phones (15) associated with Freephone number destination phone numbers, the plurality of phones being managed by a digital switch (14), the called party's system further including a Host processor (12) coupled to the digital switch, and interface means (22) for bidirectionally coupling the called party's Host processor to a Freephone number network provider's Host processor (26), the method comprising the steps of, in response to a caller dialling a Freephone telephone number: (a) transmitting from the Freephone number network provider's Host processor to the called party's Host processor information expressive of the occurrence of the caller having dialled the Freephone number; (b) determining at the called party's Host processor an action to be taken in response to the caller having dialled the Freephone number; (c) transmitting from the called party's Host processor to the network provider's Host processor information expressive of the determined action to be taken in response to the caller having dialled the Freephone number; and (d) if the called party's Host processor does not transmit the information expressive of the determined action within a predetermined interval of time, transmitting from the network provider's Host processor to the called party's Host processor default information including an indication that the network provider's Host processor has provided a default destination telephone number associated with the Freephone number. A method as set forth in claim 1 wherein the step of determining includes a step of determining whether to accept or deny the call based at least in part upon call load balancing considerations. A method as set forth in any preceding claim wherein the first step of transmitting includes a step of sending a first data packet from the network provider's Host processor to the called party's Host processor, the first data packet being comprised of data fields expressive of at least: (a) an identification of the caller; (b) the Freephone number dialled by the caller; and (c) a reference number. A method as set forth in Claim 3 wherein the step of determining includes a step of determining whether to accept or deny the call based at least in part upon the caller's identification. A method as set forth in Claim 3 or 4 wherein the step of determining includes a step of determining a destination phone number to which to connect the caller, and wherein the second step of transmitting includes a step of sending a second data packet from the customer's Host processor to the network provider's Host processor, the second data packet being comprised of data fields expressive of at least: (a) the destination phone number; and (b) the reference number. A method as set forth in claim 5, wherein if the called party's host processor does not transmit the information expressive of the determined action wihtin a predetermined interval of time, the third step of transmitting includes a step of sending a third data packet from the network provider's Host processor to the called party's Host processor, the third data packet being comprised of data fields expressive of at least: (a) the default destination phone number; and (b) the reference number. Apparatus for processing a Freephone number telephone call wherein the called party's phone system has a plurality of phones (18) associated with Freephone number destination phone numbers, the plurality of phones being managed by a digital switch means (14), the system further including a customer's Host processor (12) coupled to the digital switch and an interface means (22) for bidirectionally coupling the Host processor to a Freephone number network provider's Host processor (26), the apparatus comprising: means for receiving from the Freephone number network provider's Host processor information expressive of the occurrence of a caller having dialled a Freephone telephone number; means for determining at the called party's Host processor an action to be taken in response to the caller having dialled the Freephone telephone number; means for transmitting from the called party's Host processor to the network provider's Host processor information expressive of the determined action to be taken in response to the caller having dialled the Freephone telephone number; and means, responsive to the called party's Host processor not transmitting the information expressive of the determined action within a predetermined interval of time, for transmitting from the network provider's Host processor to the called party's Host processor default information including an indication that the network provider's Host processor has provided a default destination telephone number associated with the Freephone number. Apparatus as set forth in claim 7 wherein said receiving and said transmitting means comprise means for interfacing to a Signalling System 7 communications link and wherein said information is transmitted over a Signalling System 7 communications link. Apparatus as set forth in Claim 8 wherein said interfacing means comprises processor means having Signalling System 7 interface means, the processor means further having means for bidirectionally coupling the processor means to the customer's Host processor for transmitting information thereto and for receiving information therefrom. Apparatus as set forth in claim 7, claim 8 or claim 9 wherein the received information comprises a first data packet having data fields expressive of at least: (a) an identification of the caller; (b) the Freephone number dialled by the caller; and (c) a reference number. Apparatus as set forth claim 10 wherein the means for determining includes means for determining at least a destination phone number for the Freephone number call and wherein the transmitting means includes means for transmitting a second data packet from the called party's Host processor to the network provider's Host processor, the second data packet being comprised of data fields expressive of at least: (a) the destination phone number; and (b) the reference number. Apparatus as set forth claim 11 wherein the means for determining includes means for determining at least whether to deny the dialled Freephone number call or whether to determine a destination phone number for the Freephone number call, and wherein the second data packet further includes a data field expressive of the Freephone number call being denied by the determining means.

Inventors: JOLISSAINT CHARLES H DR, JOLISSAINT, CHARLES H., DR.
Applicants: IBM, INTERNATIONAL BUSINESS MACHINES CORPORATION
Application year: 1990
Main classification: H04Q3
IPC codes: H04M11, H04M3, H04Q3, H04M15, H04M7