METHOD AND APPARATUS FOR PROCESSING REQUESTS AND MAINTAINING RECORDS IN A TELECOMMUNICATIONS SYSTEM

Abstract: A method and apparatus for supporting local number portability and service portability in a telephone network (100) are disclosed. Subscription and administrative service requests are processed by local service management systems (LSMSs) (140a, 140b) and records are maintained at service control points (SCPs) (145a, 145b). The subscription requests include create, modify, and delete request of records in the SCPs (145a, 145b). The administrative service requests include numbering plan area (NPA) split, mass change, and query and resend requests. The records at the SCPs (145a, 145b) are accessible by switches (115a, 115b) via respective service transfer points (STPs) (120a, 120b) to determine the network addresses of the switches (115a, 115b) handling services and calls corresponding to a particular telephone number.

Description: Description METHOD AND APPARATUS FOR PROCESSING REQUESTS AND MAINTAINING RECORDS IN A TELECOMMUNICATIONS SYSTEM Technical Field The present invention relates to telephone systems. More particularly, the invention relates to a method and apparatus for handling subscription and administrative requests in a local service management system, particularly for local number portability. Kackpround Art In the existing telephone network, customers are assigned telephone numbers based upon where their telephones are geographically located or fixed. For example, each telephone number may contain numbers representing (1) a three-digit numbering plan area code (NPA code) which uniquely identifies a defined geographic area at which the customer's telephone is located, (2) a three-digit end office code (NXX) identifying a central office exchange that handles calls within that geographic area, and then (3) a four-digit line number uniquely representing the customer within the central office exchange. The existing telephone network is conventionally made up of a series of connected telephone switches, each operated by a local telephone service provider and designated to handle calls for particular customers within a service area. Many calls require switches operated by different local telephone service providers to interact with each other to establish necessary links. In those cases, the switch at the calling party attempts to locate the switch at the called party by accessing a database of network addresses indexed according to NPA code and NXX. After receiving the network address for the called party's switch, the calling party's switch establishes a link between the switches and transmits a request for the called party's switch to complete the call to the called party. This configuration is not adaptive to customer needs, however. For example, the network does not conveniently support "local number portability," meaning the ability of a customer to retain his telephone number when switching local telephone service providers. This often requires customers to change telephone numbers when they move from one service area to another, creating an inconvenience. This configuration also does not allow a customer to select different service providers to concurrently provide different services or features to that customer. Increases in customer mobility and demand for portability have prompted a proposal to modify the existing telephone network to support local number portability. Such modifications may involve maintaining in a database detailed records containing information indicating, for example, which services are provided to a customer and which service providers are selected to provide those services. Such detailed records, however, must be accurately and frequently updated so that switches can rely upon those records to provide effective service to their customers. Thus, there is a need to provide a mechanism for maintaining such records within the existing telephone network. Disclosure of Invention To achieve these and other advantages and in accordance with the purpose of the invention, as embodied and broadly described, the invention includes a method and system for handling subscription and administrative requests in a local service management system. In one aspect of the invention, a method for handling a subscription request comprises receiving at a local service management system the subscription request; providing a customer record from a database; determining whether a numbering plan area code split has occurred; sending the subscription request to a service control point; and performing status management functions. In another aspect, a method for handling an NPA split request, in which a new NPA code and an old NPA code are assigned to an NPA to which a single NPA code was previously assigned, comprises accessing a first set of records containing the old NPA code; generating a second set of records from the first set containing the new NPA code; and deleting the first set of records after occurrence of the NPA split. In yet another aspect, a method for handling a mass change request comprises updating translations for records having an LRN designated in the mass change request, if the mass change request is for a mass update; updating translations for records having an LRN designated in the mass change request and deleting records having the designated LRN, if the mass change request is for a mass move of records; and deleting records having an LRN designated in the mass change request, if the mass change request is for a mass delete. In still another aspect, a method for handling a query and resend request comrises transmitting a query to at least one database at an LSMS and SCP; and rcsending a previously transmitted subscription request, when a failure with the previously transmitted subscription request is determined. Both the foregoing general description and the following detailed description arc exemplary and explanatory and are intended to provide further explanation of the invention as claimed. Brief Description of the Drawings The accompanying drawings are included to provide a further understanding of the invention and, together with the Detailed Description, serve to explain the principles of the invention. In the drawings: Fig. 1 is a block diagram of a system consistent with the invention; Fig. 2 is a block diagram of the local service management system 140 shown in Fig. l ; Fig. 3 shows a flowchart representing an overall process performed by service management program 148 consistent with the invention; Fig. 4 shows a flowchart representing a process in which service management program 148 processes subscription requests received from the number portability administration center; Fig. 5 shows a flowchart representing a process in which service management program 148 processes a create request; Fig. 6 shows a flowchart representing a process in which service management program 148 processes a delete request; Fig. 7 shows a flowchart representing a process in which service management program 148 processes a modify request; Fig. 8 shows a flowchart representing a process in which service management program 148 processes administrative service requests; Fig. 9 shows a flowchart representing a process in which service management program 148 processes an NPA split request; Fig. 10 shows a flowchart representing a process in which service management program 148 processes a mass change request; and Fig. 1 1 shows a flowchart representing a process in which service management program 148 processes a query and resend request. Best Mode for Carrying Out the Invention Introduction To support local number portability and service portability in a telephone network, the method and apparatus of the invention handles subscription and administrative service requests in a local service management system to maintain records at a service control point. The subscription requests include create, modify, and delete requests of records in the service control point. The administrative service requests include NPA split, mass change, and query and resend requests. The records at the service control point are accessible by switches via respective signal transfer points to determine the network addresses of the switches handling services and calls corresponding to a particular telephone number. Methods and apparatus of the invention are described in connection with the attached drawings. Common reference numerals are used to designate like components. System Fig. 1 shows one embodiment of the invention as system 100. As shown in Fig. 1, system 100 includes telephones 100a, 100b, switches 1 15a, 1 15b, signal transfer points (STP) 120a, 120b, service order systems 125a, 125b, number portability administration center (NPAC) 130, local service management system (LSMS) 140a, 140b, and service control points 145a, 145b. Telephones 100a, 100b are connected to switches 1 15a, 1 15b, respectively, which are linked to STPs 120a, 120b, respectively, and service order systems 125a and 125b, respectively. SCPs 145a, 145b are connected to LSMS 140a, 140b, respectively, and STPs 120a, 120b, respectively. NPAC 130 is connected to service order system 125a, 125b, and LSMS 140a, 140b. Telephones 100, switches 1 15 comprise conventional components used in a telephone network. STP 120 comprise a signaling point that transfer signaling messages from one signaling link to another and preferably comprises a packet switch that transmits messages between switches and other network components. STP 120 also transmits messages between switches during normal call set-up and routing. Service Order System 125 handles routing of service orders made by customers at telephones 100 to NPAC 130. NPAC 130 comprises a third-party administrator of the regional LNP databases. LSMS 140 processes requests from NPAC 130 and preferably comprises a local service provider owned network database which holds down-loaded ported number information. SCP comprises a transaction processor-based system that provides a network interface to database services. Fig. 2 shows a block diagram of LSMS 140 according to the invention. LSMS 140 comprises CMISE gateway 142, application callback 144, ReqAdmin Process 146, and service management program (SMP) 148. These elements are connected serially with CMISE gateway 142 receiving requests from NPAC 130 and service management program 148 coupled externally to network element manager 200. In a preferred embodiment, LSMS 140 comprises a programmed server which performs the functions described herein. CMISE gateway 142 serves as an interface to receive requests in CMISE format, validates data in the requests, and translates the requests into a format for SMP 148. Such requests may include, for example, subscription requests to create, modify, or delete customer records stored at SCP 145. Application callback 144 receives the processed requests from CMISE gateway 142, validates the requests, sets up a local subscriber record for processing by SMP 148, and builds appropriate tables. Application callback 144 also schedules the requests for processing with ReqAdmin Process 146. ReqAdmin Process 146 maintains the schedule of requests and initiates requests for processing by SMP 148. SMP 148 processes the requests as they are received from ReqAdmin Process 146 in the manner described below in connection with Figs. 3-1 1. After processing the requests, SMP 148 transmits records to network element manager 200 for storage in SCP 145. Network element manager 200 validates the data in the records and, if valid, stores the records in SCP 145. Opcration of thc SMP SMP 148 handles subscription requests and administrative service requests in its maintenance of records stored at SCP 145. Fig. 3 is a flowchart of an overall process performed by SMP 148. After initialization (step 310), SMP 148 processes subscription requests received from NPAC (step 320) and processes administrative service requests (step 330). After SMP 148 processes these requests, the process ends (step 340). The processing of subscription requests (step 320) is described in greater detail in connection with Figs. 4-7, and the processing of administrative service requests (step 330) is described in connection with Figs. 8-1 1. Subscription requests generally refer to requests in which customer records are created, modified, or deleted. Fig. 4 is a flowchart showing a preferred embodiment for how SMP 148 processes subscription requests. After the processing of these subscription requests is initiated (step 400), SMP 148 determines whether the subscription request is a create request (step 410). If so, SMP 148 processes the request as a subscription request (step 420), described in connection with Fig. 5. If not, SMP 148 determines whether the subscription request is a delete request (step 430). If so, SMP 148 processes the request as a delete request (step 440), described in connection with Fig. 6. If the request is not a delete request, SMP 148 determines whether the request is a modify request (step 450). If so, SMP 148 processes the request as a delete request (step 460), described in connection with Fig. 7. If the request is not a delete request, the process ends (step 470). Fig. 5 shows a flowchart representing a process in which SMP 148 processes a create request. To begin, a local database is initialized in LSMS 140, after which a record is retrieved from the database (step 510). SMP 148 determines whether an NPA split has occurred (step 520). An NPA split is where more than one NPA codes are assigned to a numbering plan area to which a single NPA code was previously assigned. SMP 148 keeps track of this determination for later use. SMP 148 then determines whether the create request is a duplicate request (step 530). That is, whether it has previously received the same request. If so, SMP 148 processes the duplicate create request as a modify request (step 540), in which case processing continues as shown in Fig. 7. If SMP 148 determines that the create request is not a duplicate request, it processes translations indicating the manner in which telephone services, such as 3-way calling, voice mail, and caller ID, arc to be processed (step 550). Such translations may include the network addresses for the service providers that provides these services and are preferably processed according to industry standards. SMP 148 sends the create request to network element manager 200 to request that SCP 145 create a customer record corresponding to the one accessed in the local database (step 560). SMP 148 awaits acknowledgment that the create request was received properly. After receiving the acknowledgment (step 560), SMP 148 performs status management functions (step 570) after which the process concludes (step 580). Such functions may include broadcasting the create request to each SCP 145 where there are a plurality of SCPs 145 connected to SMP 148 and updating the local database to reflect the data stored in SCP 148. Fig. 6 shows a flowchart representing a process in which SMP 148 processes a delete request. This process contains several steps that are correspondingly similar to one described in connection with Fig. 5 for the processing of a create request. To begin, a local database is initialized in LSMS 140, after which a record is retrieved from the database (step 600). SMP 148 determines whether an NPA split has occurred (step 610) and keeps track of this determination for later use. SMP 148 then processes translations indicating the manner in which telephone services are to be processed (step 620). SMP 148 sends the delete request to network element manager 200 to request that SCP 145 delete a customer record (step 630) and awaits acknowledgment that the delete request was received properly. After receiving the acknowledgment (step 630), SMP 148 performs status management functions (step 640) after which the process concludes (step 650). One of the status management functions is preferably to delete the customer record from the local database in LSMS 140. Fig. 7 shows a flowchart representing a process in which SMP 148 processes a modify request. This process contains several steps that are correspondingly similar to one described in connection with Figs. 5 and 6 for the processing of create and delete requests. After beginning the process, a local database is initialized in LSMS 140, after which a record is retrieved from the database (step 700). SMP 148 determines whether an NPA split has occurred (step 710) and keeps track of this determination for later use. SMP 148 sends the delete request to network element manager 200 to request that SCP 145 modify a customer record previously stored in SCP 145 (step 720) and awaits acknowledgment that the modify request was received properly. After receiving the acknowledgment (step 720), SMP 148 performs status management functions (step 730) after which the process concludes (step 740). Administrative service requests generally refer to requests for maintenance and updating of existing customer records as well as requests to further process previously-made subscription requests. Fig. 8 is a flowchart showing a preferred embodiment for how SMP 148 processes administrative service requests. After commencing the process (step 800), SMP 148 determines whether the administrative service request is an NPA slit request (step 810). If so, SMP 148 processes the request as an NPA split request (step 820), described in connection with Fig. 9. If not, SMP 148 determines whether the subscription request is a mass change request (step 830). If so, SMP 148 processes the request as a mass change request (step 840), described in connection with Fig. 10. If the request is not a mass change request, SMP 148 determines whether the request is a query and resend request (step 850). If so, SMP 148 processes the request as a query and resend request (step 860), described in connection with Fig. 1 1. If the request is not a query and resend request, the process ends (step 870). Fig. 9 is a flowchart representing a process in which service management program 148 processes an NPA split request. As discussed below, an NPA split occurs where more than one NPA codes are assigned to a numbering plan area to which a single NPA code was previously assigned. This request is provided to update the NPA codes for records stored in SCP 145. Before the NPA split occurs, SMP 148 performs a modify request, as described in connection with Fig. 7, to replicate records with the old NPA code as new records and modify the NPA codes to reflect the new NPA code (step 910). Thus, two copies of these records are stored in SCP 145, one with the new NPA code and one with the old NPA code. After the NPA split occurs, SMP 148 performs a delete request, as described in connection with Fig. 6, to delete the records containing the old NPA code (step 920), after which the process ends (step 930). Fig. 10 is a flowchart representing a process in which service management program 148 processes a mass change request. In a preferred embodiment, there are three types of mass change requests: (1 ) mass update on given location routing number (LRN); (2) mass move of records from one SCP to another; and (3) mass delete of records from an SCP. SMP 148 determines whether the mass change request is for a mass update on a given LRN (step 1010). If so, SMP 148 updates the translations for each of the records having the given LRN (step 1020) and then the process concludes (step 1070). If the mass change request is not for a mass update, SMP 148 determines whether the mass change request is for a mass move of records from one SCP to another, as designated by an NPA code and NXX (step 1030). If so, SMP 148 performs a create request, as described in connection with Fig. 5, to create on the destination SCP a copy of every record containing the designated NPA code and NXX and performs a delete request, as described in connection with Fig. 6, for every record containing the designated NPA code and NXX located in the source SCP (step 1040), and then the process concludes (step 1070). If the mass change request is not for a mass move, SMP 140 determines whether the mass change request is to request deletion of records from an SCP, as specified by an NPA code(s) and NXX (step 1050). If so, SMP 148 deletes the records with the designated NPA code and NXX from the SCP (step 1060). The process then ends (step 1070). Fig. 1 1 is a flowchart representing a process in which service management program 148 processes a query and resend request. Such a request may be initiated to check upon a previously-issued subscription request. For a query request, SMP 148 queries the local LSMS database and SCP based upon a designated telephone number to access information from the database(s) (step 1 110). For the resend request, SMP 148 transmits a resend request according to a particular record (step 1 120), after which the process ends (step 1 130). Conclusion It will be apparent to those skilled in the art that various modifications and variations can be made in the method and system of the present invention without departing from the spirit or scope of the invention. For example, the steps outlined in the processes of the invention may be performed in any order, unless other specified or required because a later step requires a values generated by an earlier step. The present invention covers the modifications and variations of this invention provided they come within the scope of the appended claims.

Claims: Claims 1. A method for handling a subscription request, comprising: receiving at a local service management system the subscription request; providing a customer record from a database; determining whether a numbering plan area code split has occurred; sending the subscription request to a service control point; and performing status management functions. 2. The method according to claim 1 , wherein the subscription request comprises a create record request. 3. The method according to claim 1, wherein the subscription request comprises a delete record request. 4. The method according to claim 1, wherein the subscription request comprises a modify record request. 5. The method according to claim 1, further comprising determining whether the received subscription request is duplicative of a previously received subscription request; and if the received subscription request is determined to be duplicative, then processing the subscription request as a modify record request. 6. The method according to claim 1 , further comprising processing translations according to the received subscription request. 7. An apparatus method for handling a subscription request, comprising: means for receiving at a local service management system the subscription request; means for providing a customer record from a database; means for determining whether a numbering plan area code split has occurred; means for sending the subscription request to a service control point; and means for performing status management functions. 8. The apparatus according to claim 7, wherein the subscription request comprises a create record request. 9. The apparatus according to claim 7, wherein the subscription request comprises a delete record request. 10. The apparatus according to claim 7, wherein the subscription request comprises a modify record request. 1 1. The apparatus according to claim 7, further comprising means for determining whether the received subscription request is duplicative of a previously received subscription request; and means for processing the subscription request as a modify record request if the received subscription request is determined to be duplicative. 12. The apparatus according to claim 7, further comprising means for processing translations according to the received subscription request. 13. A method for handling an NPA split request, in which a new NPA code and an old NPA code are assigned to an NPA to which a single NPA code was previously assigned, comprising: accessing a first set of records containing the old NPA code; generating a second set of records from the first set containing the new NPA code; and deleting the first set of records after occurrence of the NPA split. 14. An apparatus for handling an NPA split request, in which a new NPA code and an old NPA code are assigned to an NPA to which a single NPA code was previously assigned, comprising: means for accessing a first set of records containing the old NPA code; means for generating a second set of records from the first set containing the new NPA code; and means for deleting the first set of records after occurrence of the NPA split. 15. A method for handling a mass change request, comprising: updating translations for records having an LRN designated in the mass change request, if the mass change request is for a mass update; updating translations for records having an LRN designated in the mass change request and deleting records having the designated LRN, if the mass change request is for a mass move of records; and deleting records having an LRN designated in the mass change request, if the mass change request is for a mass delete. - 1 j - 16. An apparatus for handling a mass change request, comprising: means for updating translations for records having an LRN designated in the mass change request, if the mass change request is for a mass update; means for updating translations for records having an LRN designated in the mass change request and deleting records having the designated LRN, if the mass change request is for a mass move of records; and means for deleting records having an LRN designated in the mass change request, if the mass change request is for a mass delete. 17. A method for handling a query and resend request, comprising; transmitting a query to at least one database at an LSMS and SCP; and resending a previously transmitted subscription request, when a failure with the previously transmitted subscription request is determined. 18. An apparatus for handling a query and resend request, comprising; means for transmitting a query to at least one database at an LSMS and SCP; and means for resending a previously transmitted subscription request, when a failure with the previously transmitted subscription request is determined.

Inventors: BHARDWAJ MANISH, GHOGHARI NILAY, HAYER JATINDER S, MALYAR JOHN PHILLIP, ROSENFELD ELIE, SENSABAUBH THOMAS H, TSACNARIS GEORGE M, WOODBURY WILLIAM F, XU LIFANG JOANN, BHARDWAJ, MANISH, GHOGHARI, NILAY, HAYER, JATINDER, S., MALYAR, JOHN, PHILLIP, ROSENFELD, ELIE, SENSABAUBH, THOMAS, H., TSACNARIS, GEORGE, M., WOODBURY, WILLIAM, F., XU, LIFANG, JOANN
Applicants: BELL COMMUNICATIONS RES, BELL COMMUNICATIONS RESEARCH, INC.
Application year: 1998
Main classification: H04M3
IPC codes: H04M3, H04Q3