Consolidated billing system and method for use in telephony networks

A billing system and method particularly well suited for use in telephony networks accounts for usage of standard network services, such as voice and data communication, and third-party services, such as paging and voicemail services, supportable by the network. Customer usage of network equipment and third-party equipment is also accounted for by such a telephony network billing system. Network and third-party usage and equipment charges incurred by a customer are advantageously integrated by the billing system into a single customer invoice.

FIELD OF THE INVENTION

The present invention relates generally to billing systems for telephony networks, and more particularly, to a system and method of integrating billing information acquired from a third-party service provider with network billing information and producing consolidated customer invoices for usage of network and third-party services and equipment.

BACKGROUND OF THE INVENTION

Telephone service providers typically employ a billing system to produce monthly invoices based on customer usage of telephony network resources and equipment. Such conventional billing systems typically constitute an amalgam of disparate computer and data processing systems which must cooperate harmoniously in order to produce a great number of customer invoices on a cyclical basis. Modifying such billing systems to accommodate new services and functionality presents a significant challenge to the providers of telephony network services. Current telephony network billing systems are generally unable to support additional billing requirements necessary to expand the scope of services which can be offered by telephony network service providers.

It can be appreciated that modifying a complex billing system that processes tens of millions of customer invoices each month is both a problematic and expensive proposition. The inability to effect such modifications, however, can result in a loss of market share and a reduction in the future growth of telecommunications companies which typically compete for business within a common customer pool. There is a need in the telecommunications industry for a billing system and methodology that can accommodate current and future telephony network service billing requirements. There exists a further need for such a billing system which does not require significant redesign of existing billing system architecture. The present invention fulfills these and other needs.

SUMMARY OF THE INVENTION

The present invention is directed to a billing system and method particularly well suited for use in telephony networks. A billing system and methodology that operates in accordance with the principles of the present invention accounts for usage of standard network services, such as voice and data communication, and third-party services, such as paging and voicemail services, supportable by the network. Customer usage of network equipment and third-party equipment is also accounted for by a telephony network billing system operating in accordance with the principles of the present invention. Network and third-party usage and equipment charges incurred by a customer are advantageously integrated by the billing system into a single customer invoice.

DETAILED DESCRIPTION OF THE VARIOUS EMBODIMENTS

Referring now to the drawings, and more particularly toFIG. 1, there is illustrated a generalized block diagram of a conventional telephony network20over which voice information24and data26may be communicated. Various types of equipment22, such as telephones and modems for example, provide access to the telephony network20. A typical network20includes a billing system28which accounts for customer use of the telephony network infrastructure (e.g., usage charges) and equipment rental (e.g., non-usage charges).

Usage and non-usage charge information is acquired and processed by a conventional billing system28to produce, for example, a customer invoice30. It is noted that acquiring and processing equipment and network usage charge information within the context of a conventional billing systems28is often accomplished using a number of disparate systems and processing methodologies. A final merging of dissimilar usage and non-usage charge data streams is typically required in order to consolidate all applicable customer charges on a single invoice.

Those skilled in the art of invoicing and billing systems for use in telephony networks appreciate the substantial effort and expenditure required to coordinate a myriad of data acquisition and processing methodologies in order to accurately produce customer invoices on a cyclical basis. By way of example, U.S. Sprint, through considerable effort and cost, has developed an Invoice Processing System (IPS) which represents the industry's first consolidated invoicing and telemanagement reporting system for residential and business customers. The IPS replaced some nine individual billing systems, and provides invoicing and reporting capabilities sufficient to support in excess of 10 million customers served by U.S. Sprint.

The Invoice Processing System originally developed by U.S. Sprint provides for the efficient processing of voice24, data26, and equipment22usage within a telephony network20. Those skilled in the art will readily appreciate the complexity of a billing system infrastructure which efficiently and accurately processes on the order of tens of millions of customer usage and non-usage charges on a monthly basis. Notwithstanding the sophistication of the original IPS and other conventional billing systems, the present consumer demand for new technologies and services, such as voicemail and paging services for example, has presented new and challenging problems to the designers of billing system architecture for telephony networks.

A billing system and methodology in accordance with the principles of the present invention provides for consolidated accounting of present and future services and features supportable by a telephony network. Charges associated with services and equipment offered by third-party service providers (i.e., non-telephony network service/equipment providers), such as paging and voicemail service providers, are seamlessly integrated along with standard service (e.g., voice and data) charges to produce consolidated customer invoices.

FIGS. 2-6illustrate various aspects of one embodiment of a billing system infrastructure within which the present invention may be utilized. Customer billing may be processed in two separate phases. The first phase, which may be referred to as call processing, acquires call or usage data from the telephony network20and performs a series of edits. During this phase, the data is batched, formatted, reviewed, authorized, and rated. A Message Processing System (MPS) prepares the call data for the next phase of the billing process.

The second phase, which may be referred to as invoicing, acquires the call records, aggregates them by cycle and customer, and then prepares the actual customer invoices. An Invoice Processing System128, which is shown inFIG. 6, performs the invoicing functions through use of seven major subsystems, including an online tables subsystem32, a cycle preparation subsystem34, an invoice calculation subsystem36, invoice verification and production subsystems40,38, a controls and reporting subsystem44, and an outbound interface subsystem42. The controls and reporting subsystem44and outbound interface subsystem42respectively establish parameters for internal IPS design management and data flow to and from various system databases.

The online tables subsystem32drives the invoicing process. Among the many functions performed by the online tables subsystem32are defining billing run parameters, maintaining product and rate structures, and specifying report requirements for customer billing.

After determining the parameters for a specific cycle set up, the IPS module128pulls the appropriate call detail records from the Message Processing System and sequences a customer's data acquired from other systems, such as from the Customer Information System (CIS), Enterprise System (ES), accounts receivable system, and other systems. Finally, the cycle preparation subsystem34allows special billing requests, such as those outside of their normal cycle, to be processed.

The calculation of invoices is a primary operation performed by the IPS module128. Invoice calculation may be viewed as being effected through two major sets of operations, namely, Calculation I and Calculation II processing operations. The Calculation I process acquires the authorized customer profile and applies all account-level monthly recurring, non-recurring, and usage charges, as well as account-specific discounts. Charges are determined by various algorithms and rate tables. For tapered800and WATS services, for example, the call detail records are re-rated according to applicable tariff requirements.

The Calculation II process is used to process hierarchical structures, discounts, and commissions (e.g., public phones). During the Calculation II process, hierarchical-level discounts are computed where applicable. The Calculation II process then applies promotions and discounts, as well as determining taxes at the call level after all discounts have been applied.

Prior to printing invoices and reports, the IPS module128verifies that all information on randomly selected customers within a given cycle is accurate. During this verification operation, the IPS module128checks its own processing by reviewing sampling invoices for each customer profile type contained in the cycle. Among the more than 350 verification parameters checked are rates, time of day, product, promotions, and taxes.

After the accuracy of the sample invoice data has been verified, the IPS module128decouples the invoices and telemanagement reports and creates electronic images for final production in the media formats selected by a customer. Invoices are printed and then dispatched to the applicable customers.

Referring toFIG. 6in greater detail, there is depicted a telephony network20which supports basic voice24, data26, and equipment22services, along with a number of new services and features not contemplated at the time of the initial telephony network design. Services such as voicemail100, voicemail with caller ID102, paging and group paging104, roaming services112, and message dispatching services114have become popular services which are routinely requested by the consumer. Other services, such as equipment insurance106, out of service area message retrieval and retransmission108, and PCS paging support110are examples of new services which are believed to be of interest to the consumer.

Present telephony network billing systems are currently incapable of accounting for new and standard services and features such that all charges for all services and features contracted by a customer, including third-party services, are presented in a single consolidated customer invoice. The inability of present billing systems to account for usage and non-usage charges for new services and features significantly limits the ability of telephony service providers to introduce such services and features to current and future customers.

For purposes of illustration and not of limitation, various features and advantages of the present invention will now be described within the context of new paging services offered by a third-party service provider which are supported by the telephony network depicted inFIG. 6. It is to be understood that the following description with respect to paging services is not intended to limit the scope of the present invention. Other services, including those yet to be developed, which may utilize the telephony network20and be accounted for in a manner consistent with the principles of the present invention come within the scope of the present invention.

In accordance with the embodiment illustrated inFIG. 6, an integration interface126cooperates with an Invoice Processing System128to account for all network and third-party services and features supportable by the telephony network20. As is depicted inFIG. 6, the integration interface126provides for the acquisition and pre-processing of standard usage and non-usage charges (e.g., for voice and data services/equipment), paging charges (e.g., for pager and voicemail services/equipment), and other service charges for subsequent processing by the IPS module128.

Enhancements in IPS functionality, as will be described hereinbelow, provides for the incorporation of usage and non-usage charges for new services and features along with standard usage and non-usage charges for presentation on a customer invoice130. Cooperation between the IPS module128and integration interface126provides the opportunity for telephony network service providers to expand the type and nature of services and features which may be offered to the consumer.

Referring now to the system block diagram ofFIG. 7and process flowcharts ofFIGS. 8-11, there is illustrated one embodiment of the present invention in which a telephony network of the type illustrated inFIG. 6has been expanded to include new paging services. The system illustrated inFIG. 7advantageously integrates third-party pager services with existing voice and data network services. The Invoice Processing System128, through cooperative operation with the integration interface126which includes a number of upstream processing modules, provides for integrated customer invoicing of conventional and paging service and equipment charges.

A pager service provider152is depicted inFIG. 7as being situated external to the billing system125of the telephony network20, as is indicated by the dashed demarcation line. The pager service provider152typically offers a number of paging services in addition to equipment rental options.

In accordance with one embodiment, and as depicted in the flow diagram ofFIG. 8, the billing system125generates an order record160which is subsequently completed and returned by the pager service provider152in order to activate paging services for a particular customer. The billing system125includes a Customer Premise Equipment (CPE) module144which initiates the order record generation process. The order record generated by the CPE module144identifies162the customer and nature of the request. For example, the order record may identify whether the customer is a new or current customer, whether a new or add-on service or feature has been requested, whether a change in a particular service or feature has been requested, or whether cancellation of a service or disconnection of equipment has been requested.

If the CPE module144determines164that a particular customer is ordering more than one pager unit, for example, a unique sequence identifier is generated166for each pager associated with the particular customer. The order record is then transmitted168electronically to the pager service provider152. The pager service provider152completes170the order record by inserting a unique pager identification number (PIN) code associated with each pager for a particular customer. The order record completed by the pager service provider152is then transmitted172to the CPE module144module of the billing system125. The CPE module144generates a CPE charge record for each pager unit which is subsequently operated on by the IPS module128. The CPE charge record information is ultimately reflected on a customer invoice130as an equipment charge at the appropriate location on the invoice130.

The pager service provider152accumulates pager usage charges during a given period of time for all customers using paging services supported by the telephony network20. Usage charge information for each customer and pager unit is transmitted by the pager service provider152to the Custom Billing Services (CBS) module148of the billing system125. A standard file layout containing the information needed to determine how many pages a particular customer received is typically transmitted between the pager service provider152and CBS module148on a cyclical basis.

As is shown in greater detail inFIG. 9, the pager service provider152prepares180a paging service account record for each pager associated with each customer. If a particular customer182has more than one pager, a separate account report is prepared184by the pager service provider152for each pager. As previously mentioned, a unique sequence number is incorporated186into the account record for each pager. The pager service provider152further inserts188customer ID information for each account record. Usage information computed by the pager service provider152is inserted190into each customer record. The customer records prepared by the pager service provider152are then transmitted192to the billing system125of the telephony network.

Referring toFIGS. 7 and 10, the CBS module148, upon receiving paging service account records200from the pager service provider152, initiates conversion of the raw data contained within the account records to a voucher file format202. The raw data, which is formatted according to the voucher file format, is validated204to verify the accuracy and integrity of the raw data supplied by the pager service provider152. If errors are detected206in the raw data, edits are made208to correct the errors. If the errors cannot be corrected210, the account record is rejected212and a control report is generated212by the CBS module148alerting system administrators as to the particulars of the unresolved errors.

Vouchers that have been validated by the CBS module148are uploaded214to an open gateway module142. The open gateway module142distinguishes216paging usage records from non-paging usage records. Each voucher typically includes a service type field that specifies whether the voucher is associated with a paging service or a non-paging service. Voucher charge records are then further processed218by the Extract Load (XL) module140and IPS module128.

With reference toFIGS. 7,11-15, there will be described in greater detail various operations performed by the extract load module140and the IPS module128concerning the processing of equipment charges, standard voice and data service charges, and pager service usage charges. It is noted that the processes depicted inFIGS. 12 and 13are associated with processing of non-usage charges acquired/processed by the CPE module144. The processes depicted in FIGS.14and15are associated with processing of usage charges (e.g., vouchers) acquired/processed by the CBS module148.

The XL module140receives220equipment charge records from the CPE module144and voucher charge records from the CBS and open gateway modules148,142associated with both paging and non-paging services. The XL module140sorts the CPE charge records, typically by customer, extracted from the CPE module144and transfers these records to the IPS module128, as is depicted inFIG. 12. The IPS module128identifies222CPE charge records by analyzing224a synonym ID code embedded in each CPE charge record file.

The IPS module128analyzes224the synonym ID code of each CPE charge record, or file, in order to identify the service usage category associated with a particular customer's pager. For example, the synonym ID code #1 indicates that the customer has a package arrangement under which various services and features are bundled together along with rental of a paging unit. Other synonym ID codes indicate whether a particular customer paging unit has associated with it local, regional, or national usage services, numeric paging, alphanumeric, paging, and what type of basic pager service has been established for the particular pager unit. The synonym ID code may also include information concerning the application of various types of discounts and, whether charges are recurring or non-recurring. A generalized flow diagram concerning the processing of CPE charge records is illustrated inFIG. 13.

The IPS module128also identifies226paging usage records in the form of voucher charge records received from the XL module140. The IPS module128determines the rate for the service associated with each voucher charge record and applies230the appropriate unit charge, previously determined by the CBS module148, and unit discount rates for each pager package. The pager PIN code for each voucher charge record is extracted232so as to uniquely identify all charges associated with each pager possessed by a particular customer.

Reference is made toFIGS. 14 and 15which depict various steps concerning the processing of voucher charge records performed by the IPS module128. Using the CPE and voucher charge record information, the IPS module128processes234customer invoices and locates usage and non-usage charges for standard services as well as pager services on each customer invoice130. The invoices are printed236and then dispatched to individual customers.

Additional features and aspects of the process flow diagrams ofFIGS. 12-15and invoice depictions ofFIGS. 16A-16Gwill now be described in greater detail. As is shown inFIG. 13, CPE charge records are processed by a discount and promotion accumulation module302. The discount module302differentiates paging item level discounts from other item level discounts. A field in the CPE record files received by the IPS module128is used to identify paging item level discounts.

Each paging item level discount is written to a discount file separately and can be identified as relating to paging services using a paging switch field, such as by setting the paging switch field to “Y” for indicating paging. It is noted that the discount module302also processes voucher records, as is shown inFIG. 15, in a similar manner with respect to voucher discount files. It is further noted that the voucher charge processing module309shown inFIG. 15moves the fields needed to process the voucher records in the voucher file to a voucher external view.

CPE discount files are then further processed for purposes of preparing customer invoices. A discount activity module304identifies CPE discount files that include an appropriately set paging indicator flag. The activity module304moves the new discount file paging indicator flag to the CPE discounts view paging indicator flag, which is used to identify paging discounts.

A charge report formatter module307provides for the displaying of one or more pager identification numbers (PINs) in the description of the invoice.FIGS. 16E-16Gillustrate charges associated with each of a number of pager units identified by a unique identification number in the itemization of charges portion of the customer invoice. The PIN number is typically displayed on the Monthly One Time Charge invoice page in the Reference ID column.

A charges extract module308, shown in bothFIGS. 13 and 15, processes special product (i.e., operator dispatch) voucher charges acquired through the open gateway144for placement on the customer invoice. A standard header, such as ‘Operator Dispatch Charges’ shown in the Account Detail portion of the customer invoice inFIG. 16E, is placed on the invoice to represent these paging usage charges.

In addition, the charges extract module308recognizes equipment records acquired through the CPE system. As such, the charges extract module308differentiates non-pager related CPE equipment records from company pager equipment records, This level of differentiation is needed to show the appropriate charge description on the invoice report.

A discounts extract module306provides for the processing of paging discounts. Paging discounts are identified by the new paging indicator at the end of the CPE discount view. All paging item level discounts are stored in an internal array until the end of account processing, at which point they are written to the invoicing file.FIG. 16Eillustrates a summary of discounts presented on a customer invoice.

An itemization report formatter module310provides for the creation of an itemization of charges report. A voucher view is provided to enable the itemization report formatter module310to process special product (e.g., operator dispatch) voucher charges acquired through the open gateway144for placement on the customer invoice.FIGS. 16E-16Gillustrate an itemized listing of charges associated with a number of paging units presented on a single composite customer invoice. The charge text description lines in the voucher view for the date and the charge description fields are moved to the invoice report record by the itemization report formatter module310.

A CPE view is also included as part of the itemization report formatter module310to enable the module310to process customer premise equipment information. In particular, the itemization report formatter module310differentiates between non-pager related CPE equipment records and company pager equipment records. This level of differentiation is required in order to include the appropriate text description on the customer invoice report. Non-paging equipment records are typically given a default description of ‘Equipment.’

The itemization of charges report exit module312produces print files for equipment and voucher charges that appear on a customer invoice.

The foregoing description of the various embodiments of the invention has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed. For example, the consolidated billing system disclosed herein may accommodate billing requirements from services other than those offered by a pager service provider. Further, the telephony network depicted herein may constitute a fiber-optic network, a digital network, a hybrid analog/digital network, or other type of telephony network. Many modifications and variations are possible in light of the above teaching. It is intended that the scope of the invention be limited not by this detailed description, but rather by the claims appended hereto.