Payment by Authenticated Facsimile Transmission

a Check Replacement Technology for Small and Medium Enterprises

Payment Processing Overview

Warning: This document is OBSOLETE
as CONNOTECH is not pursuing this business any more.

By Thierry Moreau

CONNOTECH Experts-conseils Inc.

Table of Contents

Preface
1. Introduction
2. Payment by Authenticated Fax: How It Works
3. Relative Advantages
. . . . 3.1. Product Positioning
. . . . 3.2. Benefits to the Payor
. . . . 3.3. Benefits to the Payee (Payment Beneficiary)
. . . . 3.4. Benefits to the Participating Bank
. . . . 3.5. Benefits to the Payment Processor
4. Payment Processing
. . . . 4.1. Overview
. . . . 4.2. Roles of Participants in the Payment Process
. . . . . . . . 4.2.1. Payment by Fax Processor ("PbF Processor")
. . . . . . . . 4.2.2. Participating Banks
. . . . 4.3. Single Payment Processing Steps

. . . . 4.4. Processing Details
. . . . . . . . 4.4.1 Payment Advice
. . . . . . . . 4.4.2. Beneficiary Registration with a PbF Processor
. . . . . . . . 4.4.3. Origination Rules
. . . . . . . . 4.4.4. PbF Networking
Appendix A - Rationales for Payment Process Design
. . . . A.1 - Introduction
. . . . A.2 - Payment Liabilities
. . . . A.3 - EFT Penetration Challenges
. . . . A.4 - Desirable Features for Payment by Fax
Document Notes

List of Tables and Figures

Table 1) Distinctive characteristics of Payment by Fax
Figure 1) Positioning of Payment Mechanisms
Figure 2) Traditional Check Processing
Figure 3) Payment by Fax Processing
Table 2) Who sells what to whom for payment by fax?
Figure 4) Technological Environment for Payment by Fax Processors
Figure 5) PbF Processing by the Payor's Bank
Figure 6) PbF Processing Outsourced by an ACH Origination Capable Bank
Figure 7) Outsourcing of ACH Origination and PbF Processing
Figure 8) Processing Steps for Payment by Fax
Table 3) Payment Advice Delivery Methods

Preface

CONNOTECH proposes payment by authenticated facsimile transmission ("payment by fax") to expand the payment options offered by the U.S. banking industry. This novel payment mechanism is like payment by check for the payor. For the other parties involved in the transaction, it is a form of electronic funds transfers (EFT). CONNOTECH has filed a patent application to the U.S. Patent and Trademark Office to cover this payment method.

Payment by fax requires two supporting technologies: 1) secure facsimile transmission (embedded in a fax authentication device) and 2) computerized document imaging systems. CONNOTECH is developing the required hardware, software and systems to position itself as the equipment manufacturer for payment by fax.

The primary application area for payment by fax is the Automated Clearing House ("ACH") payment network in the United States. Payment requests initiated by authenticated fax messages are processed to enter the ACH payment network as Corporate Trade Exchange ("CTX") transactions, the electronic alternative to paper checks for business payments.

The reader should be aware of the contemporary U.S. payment system characteristics (see note 1). This document describes payment by fax in the context of existing payment methods. The purpose of this document is to promote the concept of payment by fax by explaining its key characteristics in relation to the current situation.

Payment by fax represents a business opportunity to financial institutions, outsourcing organizations (third party processors), and to network service providers. Please contact CONNOTECH for more information.

1. Introduction

CONNOTECH proposes a payment mechanism using authenticated fax transmission. It is a check replacement technology, allowing small and medium business managers to send authenticated payment requests to their bank instead of mailing paper checks to the payment beneficiaries.

2. Payment by Authenticated Fax: How It Works

This payment method is a highly secure process based on three security factors:

  1. A fax authentication device that is installed beside the payor's fax machine. It is connected to the fax machine on one side and to the telephone line on the other side. This fax authentication device has a small keyboard and display to guide the manager through the authorization procedure, much like an automated banking machine.

  2. An electronic key that is required to activate the digital signature capability of the fax authentication device. Each signatory of a bank account is given an electronic key.

  3. A secret personal identification number (PIN) for each signatory of a bank account.

For the payor, there are more similarities than differences between traditional payment by paper check and payment by fax. In the business environment, the usual payment cycle includes the following steps:

  1. Invoicing: An invoice is produced by the payment beneficiary. This invoice is tracked by an entry in the beneficiary's accounts receivable (A/R) system.

  2. Payment Issue:
    a) The payor prepares a financial document (a paper check or a payment request to the payor's bank) and affixes to it some form of remittance data (a remittance coupon, a copy of the invoice, a list of invoices paid, or the account number within the beneficiary's A/R system).
    b) The payment is authorized according to the internal control procedures in force within the payor's organization. In the case of small businesses, the internal controls are usually limited to "who signs the check," or who has the required key and PIN to authorize authenticated fax transmission.

  3. Payment Processing:
    a) Money is transferred from the payor's bank account to the beneficiary's bank account.
    b) The beneficiary uses the remittance data to update its A/R system.

With the payment by fax method, the invoicing step is unmodified and the payment issue step is slightly modified from the traditional check:

  1. The payment request form contains essentially the same information as a paper check, but in a format suitable for automated processing of fax images.

  2. The beneficiary identification data must be more precise (preferably including the beneficiary's bank routing number and the beneficiary's account number). With the traditional paper check, the mailing address is the foremost beneficiary identification.

  3. The remittance data may be in a format suitable for automated processing, or in any other format.

  4. Transmission by authenticated fax is used for the payment request form and the remittance data. The authenticated fax message is sent to the payor's bank or to a third party processor. Postage costs are eliminated.

  5. A digital signature replaces or supplements the handwritten signature. A digital signature is computer evidence affixed to the fax message digital recording. This computer evidence enables an arbiter or an expert witness to certify that the fax message originated from a given fax authentication device. A digital signature is not visible on the received payment request form (see note 2).

  6. Bank account reconciliation is no longer needed since the payments are systematically settled the next banking day after transmission.

Table 1 summarizes the differences between checks and payment by fax.

Distinctive characteristics of Payment by Fax

Table 1) Distinctive characteristics of Payment by Fax

For the other parties involved in the payment process, including banks, payment by fax looks like replacing paper checks by electronic funds transfer (EFT). Money is deposited directly into the beneficiary's account at his bank. The beneficiary also receives a "payment advice," a message that contains remittance data and a bank confirmation of the payment amount and date. This payment advice may be received as a periodic statement, a fax transmission, or an electronic mail message. If the electronic mail message adheres to an industry standard format, it is called an EDI message.

3. Relative Advantages

3.1. Product Positioning

Payment by fax offered by CONNOTECH is a unique improvement over payment by check, however there are other existing and emerging improvements:

  1. Banking by phone (consumer initiated bill payment) is convenient for consumers. For business payments, banking by phone leaves no immediate record of the transaction, is applicable to a limited set of beneficiaries, and is a bit weak on security.

  2. Preauthorized payments are typically used for periodic payments such as a lease or insurance premiums. It is applicable to small and medium businesses but not as a general payment mechanism.

  3. Credit cards are being offered for business payments. A typical credit card transaction encompasses a purchase order and a payment in a single operation. This is a significant departure from the usual business payment occurring at the end of the procurement cycle (after the goods are delivered and invoiced).

  4. With PC origination of ACH (computer-initiated payment), the payor uses a personal computer software to authorize payments which are sent electronically to his bank. PC origination of ACH is in competition with payment by fax. As explained below, the two alternatives are well differentiated. Each one will find its market share. Payment by fax brings less change to the current practice than computer-initiated payment. It is also more secure.

  5. Financial EDI is a variant of computer-initiated payment, characterized by the explicit conveyance of remittance data along with the payment itself, up to the beneficiary business system. Since financial EDI is typically part of an elaborate business system, it is attractive to sophisticated organizations. This market segment is not considered for payment by fax. Indeed, a payment initiated by fax turns into a financial EDI transaction for an EDI capable beneficiary (see below).

Positioning of Payment Mechanisms

Figure 1) Positioning of Payment Mechanisms

In the following sections, computer-initiated payment refers equally to PC origination of ACH and financial EDI (to the extent it can meet the requirements of small and medium businesses). Computer-initiated payment is currently being introduced by a number of U.S. banks. Payment by fax is under development by CONNOTECH and should actually benefit from the primary demand for check replacement technologies uncovered by the computer-initiated payment offerings. The two payment methods are compared in the following sections.

3.2. Benefits to the Payor

Payment by fax is designed as a complete check replacement technology. Fax transmission can accommodate any type of remittance coupon or payment details. Just like an envelope! It is not clear how computer-initiated payment can match this level of flexibility.

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With either form of EFT mechanism, the payor has full control over the timing of disbursements. The ACH rules are such that payments are settled the banking day following their transmission to the bank. Float is eliminated, but the payor can now wait to the last day allowed to benefit from discounts or avoid late-payment penalties (see note 3). As the saying goes, the faster the money moves, the more you make.

Payment by fax is simple to use. It does not require computer literacy. It raises no question about compatibility with a computer system. It is compatible with the daily activities of every small business manager: sending documents by fax, using a key, entering a PIN on a keypad, and keeping records of important business transactions. Detailed instructions can be printed in any language on the payment forms or remittance coupons.

Direct cost savings arise from the elimination of the envelope, postage, and custom check printing. Fax transmission is free for local calls. Custom check printing is no longer needed: a photocopy of a blank payment request form is adequate for payment by fax.

The most significant labor cost reduction comes from the bank account reconciliation which is made trivial since there are no more outstanding checks. Further cost reductions are available if the payor uses a fax modem to issue payment requests.

Payment by fax provides the stringent internal controls needed by a small and medium business. The person who signs the checks is given an electronic key and a PIN to issue payment requests. The fax authentication device operating procedures even allow delegating payment authority without compromising security. This is an improvement over signing blank checks before going on holiday leave.

The authenticated fax transmission is a highly secure system, leaving no secret key anywhere on a computer disk. In most small and medium businesses, the accountant's computer disk is an insecure storage. This practical security issue may seriously impede the penetration of computer-initiated payment in the small and medium business market.

A not-so-obvious benefit of both EFT mechanisms is improved supplier relationships. Since there are no more checks in the mail, the supplier's A/R department notices the improved payment mechanism used by its customer immediately. Negotiation of credit terms and limits are usually facilitated by this kind of distinctive business practice. The significant advantages of EFT collection by the supplier (see next section) also help.

3.3. Benefits to the Payee (Payment Beneficiary)

The payee does not need a fax authentication device to receive funds electronically. If the payee agrees to have money deposited directly into his bank account, he benefits in many respects from any EFT payment mechanism used by the payor (see note 4). The so called "EFT collection" reduces the volume of incoming mail. The incoming mail has to be opened, processed, and consolidated in bank deposit. This is a labor-intensive operation, thus an opportunity for significant expense reduction. If a lock box service is used (outsourcing of incoming payment processing to a bank of an independent processor), the expense reduction opportunity takes the form of reduced lock box fees.

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Payment by fax will be a significant factor in the foreseen increase in EFT penetration because it is attractive to small and medium businesses which would otherwise remain check based. Usually, this very segment of the business market accounts for the largest volume of items collected from businesses. There is little expense reduction in converting 80% of collection value to EFT if 80% of collection volume remains paper-based.

For large value receipts, EFT collection eliminates expensive courier service (a $100,000.00 payment delayed for 2 business days in the regular mail may cost up to $109.59 in interest expense at 10% interest rate). Irrespective of individual amounts, the aggregate amount of checks in the mail may be quite large. This "receivables float" reduction benefit may be shared with customers by extending payment terms by one or two days, or otherwise. Payment by fax is currently planned with small and medium value payments in mind (there is no set limit but $50,000.00 is used as a system design parameter).

Unlike a paper check deposited at the bank, an ACH credit transaction triggered by authenticated fax cannot be returned. From the payee's perspective this lowers the risk of doing business with a payor by fax. This and the other advantages of EFT collection improve the payee's relationship with small and medium business customers using payment by fax.

In processing payments, the payee must update its A/R system according to the remittance data sent by the payor with the payment. This implies a requirement for a payment advice to be sent to the payee. This payment advice may be received as a periodic statement, a fax transmission, or an electronic mail message. If the electronic mail message adheres to an industry standard format, it is called an EDI message. When EDI is used, automated A/R record updating can be automated and there is an immediate improvement in the A/R processing accuracy. This is one of the major incentives for using financial EDI.

3.4. Benefits to the Participating Bank

It easy for banks to join a payment by fax program (see section 4.2.2). The payor's bank has to formally agree to participate in payment by fax and make the appropriate arrangements. The payee's bank need only to accept EFT transactions as an ACH receiving bank.

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For banks, any EFT mechanism reduces the volume of paper checks to handle. This brings savings in labor and overall processing costs, as well.

Check fraud is a growing affliction for the U.S. check processing system. EFT payments are essentially immune to the type of fraud prevailing in the check system.

Fraud prevention is achieved by using information security technology, shortening the payment cycle, and reversing the direction of money flow. These payment process changes also reduce the financial risk borne by the banks (see note 5).

Banks would benefit from any significant expansion of EFT usage. In this respect, payment by fax is unique by its capacity to attract small and medium enterprises to EFT.

3.5. Benefits to the Payment Processor

The U.S. payment system makes use of payment processors such as pay-by-telephone processors, ACH origination service providers, payroll processors, and lock box processors. All of these provide some type of interfacing between bank customers and the payment system, adding value and/or convenience to the basic payment services. Payment by fax is a service fitting naturally in the core business of existing payment processors (see section 4.2.1).

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From the financial institutions' perspective, payment by fax may conveniently be outsourced to a payment processor, or it may be operated by the bank personnel. In the latter case, the benefits to the payment processor are those of the bank.

In the definition of new payment services, payment processors face many constraints. By accommodating any format for remittance data, payment by fax opens the door to an unrestricted payment service. This expands the potential market for payment by fax.

All electronic payment services require end-user support. For instance, most automated banking machines are equipped with a telephone receiver for 24 hour operator assistance. Computer initiated payment is the most support-intensive EFT mechanism. At the other end of the complexity spectrum, payment by fax is very easy to use. Payment request forms can be made self-explanatory, reducing the workload of the customer support function. Installation of payment by fax is trivial compared to installation of computer-initiated payment.

Both computer-initiated payment and payment by fax allow the payment of bills issued by large volume billers. Thus either or both of them may be marketed with the assistance of large volume billers. For the payment processor, the unit transaction cost of computer-initiated payment is less than the unit cost for payment by fax (the latter may require some operator intervention). On the other hand, payment by fax reaches a market segment that would otherwise remain check-based. Comparison of actual profit margins between the two payment mechanisms may not be made until price sensitivity data are supported by experience.

Payment by fax is differentiated from computer-initiated payment as a convenient mechanism to replace all checks issued on a checking account. Unlike bill payment services restricted to large volume billers and financial EDI restricted to EDI capable business partners, payment by fax is a horizontal payment mechanism. As such, it should find much attention from bank marketers.

4. Payment Processing

4.1. Overview

Either with traditional paper check or payment by fax, the payment system is an involved process. Figures 2 and 3 show the payment process for traditional paper check and payment by fax respectively. Those already familiar with the U.S. payment system will appreciate the similarities between payment by fax and other EFT mechanisms.


Traditional Check Processing

Figure 2) Traditional Check Processing

The proposed payment by fax processing makes use of the ACH payment network. This avoids unnecessary duplication of payment systems and will increase ACH processing usage. Since payment by fax is designed to replace all checks issued by a small or medium business, payment by fax must make up for current limitations of the ACH payment network.

One such ACH limitation is the uneven support of remittance data delivery to the payee. Payment by fax processing offers alternative remittance data delivery mechanisms. The payment by fax processors are well positioned to provide these alternative mechanisms without duplication of the core ACH functions. See also section 4.4.1 for further discussion of this topic.


Payment by Fax Processing

Figure 3) Payment by Fax Processing

4.2. Roles of Participants in the Payment Process

Payment by authenticated fax transmission represents the advent of a new segment in the payment processing industry. As such, it involves equipment and system manufacturers, the banking industry, and bank customers. The supplier-customer relationships among these industry participants are illustrated in table 2. The roles of the payment by fax processor and the depository financial institutions are further explained in sections 4.2.1 and 4.2.2 respectively.


Who sells what to whom for payment by fax?

Table 2) Who sells what to whom for payment by fax?

4.2.1. Payment by Fax Processor ("PbF Processor")

A payment by fax processor ("PbF processor") is an outsourcing organization or an operating department within a financial institution. A PbF processor is responsible for providing the payment service to payors who subscribe to the service.

Technological Environment for Payment by Fax Processors

Figure 4) Technological Environment for Payment by Fax Processors

In the case of payment by fax, the PbF processor fulfills the following roles (from figure 4):

  1. Ensuring the authenticity of incoming facsimile messages.

  2. Turning the payment requests from their facsimile image format to EFT transactions.

  3. Recording the payment evidence (the digitally signed facsimile messages) in a format suitable for later dispute arbitration.

With the current payment process design, the PbF processor provides an interface between the payor and the payor's bank. Offering the payment by fax service for any payor's bank is conceivable but not currently considered.

The foremost task assigned to the processor is to turn the payment requests from their fax images format into a format suitable for the ACH network. The fax images are received directly in a computer system and processed by automated or operator-assisted methods. Compared with paper checks, the handling and labor cost of payment by fax are minimal: handling is fully electronic, and the operator tasks are limited to data entry and validation. Compared with computer-initiated payment, any operator intervention might be viewed as excessive.

Indeed, any operator-assisted process of payment by fax is reflected in added value to the payor (convenience of using existing business forms and additional transaction validation). With computer-initiated payment, the payor must himself convert existing business forms to a computer record. Payors must be trained to perform this conversion. Moreover, a computer-initiated payment transaction is never reviewed by a human operator after its initiation. Thus, the payor is solely liable for errors in the case of computer-initiated payment (see appendix A).

Transactions received from a payor by fax are first queued and later processed. In system design, queuing of transaction requests is an efficient load smoothing method. Queuing allows a system capacity planning based on average load. By contrast, the capacity requirement of a fully on-line system stems from the peak load. Thus the staffing requirements for payment by fax processing are reasonable.

4.2.2. Participating Banks

A bank wishing to offer payment alternatives to its customers will make arrangements with a PbF processor to offer the payment by fax service as an option to business checking accounts. A participating bank must either be an ACH participant or agree to outsource the ACH origination function to a third party. Where the bank is a ACH participant, the PbF processing either may be integrated in the bank operations (as shown in figure 5) or outsourced to a third party (figure 6). When both the ACH origination function and the PbF processing are outsourced, figure 7 is applicable. Figures 5, 6, and 7 use the ACH credit transfer terminology where the payor's bank is an Originating Depository Financial Institution ("ODFI") and the payee's bank is a Receiving Depository Financial Institution ("RDFI").


PbF Processing by the Payor's Bank

Figure 5) PbF Processing by the Payor's Bank


PbF Processing Outsourced by an ACH Origination Capable Bank

Figure 6) PbF Processing Outsourced by an ACH Origination Capable Bank


Outsourcing of ACH Origination and PbF Processing

Figure 7) Outsourcing of ACH Origination and PbF Processing

The participating bank is the payor's bank. The payee's bank need not participate in payment by fax. It is highly desirable for any U.S. bank to participate in the ACH payment network, at least as a receiving institution, for all ACH applications including payment by fax. Even payee banks not qualifying as an ACH receiving institution are supported by payment by fax. The only implication is the use of an atypical handling of transactions (see section 4.4.3).

4.3. Single Payment Processing Steps


Processing Steps for Payment by Fax

Figure 8) Processing Steps for Payment by Fax

The processing of a sample payment is illustrated in figure 8. The processing steps are as follows:

1) Payment request by payor

The payor prepares a payment including a payment request and some remittance data. The payment is authorized and authenticated with the following three security elements: 1) the payment must be sent by a conventional fax machine (or a fax modem) connected to a fax authentication device installed at the payor location, 2) the signatories of the bank account must present an electronic key to the fax authentication device, and 3) the signatories must enter their secret PIN.

Authenticated fax transmission is used for this original payment request. The payment is received by the PbF processor directly in a computer imaging system. It is also recorded in its digital form that includes a digital signature. This record is a strong evidence of the payment request authenticity and may be later divulged and scrutinized for dispute arbitration.

2) Payee validation and inquiry of payment advice method

The PbF processor looks up the payee directory to validate the payee identification and to retrieve the payment advice method applicable to the payee. This directory inquiry is based on the payee's bank routing and payee's account number found in the payment request.

The PbF network carries inquiries to the payee directory. By definition, a payment network is geographically distributed. This explains why the payee directory is shown as a distributed computer application.

3) Payment request forwarded to payor's bank (ACH origination)

The PbF processor prepares an ACH credit transaction that is an exact duplicate of the data found in the original payment request. This ACH transaction is released to the payor's bank for processing. The payor's bank sees the PbF processor as a payor's agent.

The link between the PbF processor and the payor's bank can adhere to the various specifications in use in the U.S. banking industry for ACH origination.

4A) ACH credit transaction entry released to the ACH operator

As part of its normal ACH processing, the payor's bank sends the ACH credit transaction to the ACH payment network. This step would be skipped for "on-us" items. On-us items are processed by the payor's bank, not by the PbF processor.

4B) Confirmation sent back to originating PbF processor

A payment confirmation is sent by the payor's bank to the PbF processor. This occurs when the bank is confident that the payment will be honored.

5A) Payment advice issued by originating PbF processor

The bank confirmation releases the payment advice addressed to the payee. In the case illustrated in figure 8, the payment advice is forwarded to another PbF processor that maintains a remittance mailbox on behalf of the payee.

5B) Payment confirmation to payor

The bank confirmation is also forwarded to the payor. Typically, this confirmation takes the form of conventional fax transmission.

6) Payment advice delivered to payee

Finally, the payment advice is delivered to the payee, in a batch containing advices for other payments from any payor by fax to this same payee.

4.4. Processing Details

4.4.1 Payment Advice

Definition of a Payment Advice

A payment advice consists of:
1) a payment confirmation originating from the payor's bank, and
2) some form of remittance data originating from the payor.
A payment advice is directed to the payment beneficiary. For each payment received by a beneficiary, the remittance data format is either
3) a structured digital message, or
4) a bit map representing the partial contents of an unprocessed fax message (the bi-level bit map image of a remittance document).
Conversion from a structured message format into a bit map is a simple computer operation (like a printout of the structured message contents). The conversion in the other direction, from a bit map to a structured message, is a non-obvious process, most often requiring human operator intervention. Structured messages may be valuable to any beneficiary organization using or considering the use of any form of EDI, either by itself or through outsourcing. For this reason, payment advice methods that do not convert structured messages into bit maps have a greater potential value. Some payment advice method will accommodate only structured messages. Others accommodate either remittance data formats.

Timeliness of Payment Advices

Like check processing and ACH payment network, payment by fax is inherently a batch process. Individual payment advices are usually not needed. On the contrary, periodic batches of payment advices may best fit the beneficiary needs. For this reason, electronic or fax messaging mailboxes are needed to support the payment by fax process. In this specification, the term remittance mailbox is used to refer to the temporary storage of remittance data accumulated for a given payment beneficiary.

Table 3 gives the four elementary methods of delivering payment advices to a beneficiary.

Payment Advice Delivery Methods

Table 3) Payment Advice Delivery Methods

The selection of the ultimate delivery method from the above table to the beneficiary is a single component of a complete advice method specification. Another important component is the transmission network used between the payor (more precisely the PbF acting as the payor's agent) and the beneficiary. In the context of payment by fax, a beneficiary registers a preferred payment advice method with a PbF processor of its choice (see section 4.4.2 about this registration procedure).

A complete characterization of a payment advice method includes:

  1. whether a PbF processor maintains a remittance mailbox for the beneficiary,

  2. the ultimate delivery method from the above table,

  3. the transmission network

The following payment advice methods are supported:

1) ACH Financial EDI

With this method, the structured remittance data enters the ACH payment network with the payment itself as addenda records to CTX entries and is delivered to the beneficiary by the ACH network. Arrangements between the beneficiary and its bank cover the final delivery of payment advices. Recently, NACHA selected MCI as a supplier for EDI solutions to small and medium sized financial institutions. This method does not support the bit map format.

With the next two methods, the originating PbF processor splits the payment transaction in two parts: the financial part and the remittance data. The financial part enters the ACH network as a CTX entry with a transaction reference number as the only payment detail data.

2) Remittance Mailbox Maintained by a PbF Processor

The remittance data is forwarded electronically to the PbF designated by the beneficiary to maintain a remittance mailbox on his behalf. The inter-PbF network (the data communication network supporting the communication between PbF processors) is going to be selected in a network services procurement process. The designated PbF accumulates the remittance data for each beneficiary in remittance mailboxes and delivers it according an arrangement with each beneficiary. The mailbox supports both bit map and structured remittance data.

The final delivery to the beneficiary may occur by any of the four methods indicated in table 3. PbF processors may differentiate themselves by offering additional final delivery mechanism options.

3) Other Store and Forward Messaging Networks

The remittance data is forwarded electronically to a network carrier that ensures delivery to the payment beneficiary. This forwarding process may be through a local interface in the PbF systems or through a gateway facility in the PbF network.

By default, the payment advice method is a remittance mailbox maintained by a PbF processor with facilities in the same geographical area as the beneficiary and periodical delivery of remittance data by fax.

When the preferred payment advice method does not support the bit map format, the beneficiary is requested to select a secondary payment advice method for the transmission of bit map remittance data. Since the secondary payment advice method should support the bit map format, some methods do not qualify as a secondary method.

4.4.2. Beneficiary Registration with a PbF Processor

A payment beneficiary registers itself with a PbF processor. In doing so, the beneficiary agrees to receive money directly in its bank account when the payment originated from payment by authenticated fax. The beneficiary need not be a payment by fax payor. This registration has many purposes:

  1. With the registration, the beneficiary gives the standing authorization to all payment by fax payors. It allows every payor to deposit money in the beneficiary's bank account through the ACH payment network. In the registration procedure, specific payors may be excluded from the general authorization.

  2. The registration includes the beneficiary bank name, bank routing number and account number. This is the unambiguous information used by the banking industry and the PbF processors as well. The PbF network spreads this routing information to all PbF processors.

  3. With the registration, the beneficiary indicates its preferred advice delivery method and, if required, the secondary advice delivery method. A secondary method is always required if the preferred one does not support the bit map format. The PbF network spreads this routing information to all PbF processors.

  4. When the beneficiary is a large volume biller that issues remittance coupons in a format suitable for automated processing, this fact may be filed with the beneficiary registration. Details filed by the beneficiary about the layout of the remittance documents may be highly valuable in automating the payment process.

Payors may request a beneficiary directory search to assist the preparation of payment requests. The information provided to the payor when a search is successful should include the beneficiary's name, address, and bank routing and account numbers, and other information as provided by the beneficiary upon registration. The requester receives more than one directory listing when the directory contains more than one matching entry. In any case, the payor is always responsible for the information contained in the payment requests (verifying the information directly with the beneficiary may be recommended).

4.4.3. Origination Rules

The payment request has basically the same contents as a paper check, except that the beneficiary's bank routing number and the beneficiary's account number should be included if available to the payor. The payor has to include the bank routing and account numbers independently of the knowledge of the PbF processor of this same information. This is to make the payor liable for any error, yet it allows the PbF processor to reduce the likelihood of such errors. The validation is performed with very limited guarantee and with strict limitations of the PbF liabilities. The payor discipline of indicating bank routing and account numbers will facilitate later adoption of other EFT technologies (payment by fax is said to support evolution towards the paperless office).

The PbF processor is an agent of the payor and performs the following duties:

  1. Whenever the two identifying numbers are missing, or where the beneficiary did not register itself with a PbF processor, or where the beneficiary's bank is not an ACH receiving institution, the payment request is turned into a paper check which is mailed to the beneficiary with a hardcopy of the remittance data.

  2. The PbF processor attempts to detect discrepancy between the account number and the beneficiary name. This detection does not lessen the liability of the payor in case of errors.

  3. The PbF processor provides a confirmation to the payor and releases the payment advices only once a confirmation has been received from the payor's bank that the payment requests will be honored.

4.4.4. PbF Networking

All PbF processors in the U.S. will be linked by a data communications network. This network is a wide area network (WAN), and may be a private network, a virtual private network, or simply access points to a public network.

This networking function serves the following purposes:

  1. It allows the standing authorization of a beneficiary to be given once for all payors. This requires a centrally administered directory of beneficiaries, which is the foremost function of the PbF network.

    The centrally administered directory is a high level network function. It may be implemented by the PbF processor systems themselves, or as a value-added function of the intervening network.

    There are two types of access to this directory: a quick access by bank routing and payee account number, and a directory search based on multiple criteria. The quick access volume will be much higher than the directory searches.

  2. The centrally administered directory also publicizes the payment advice method applicable to each beneficiary. For a beneficiary receiving payments from a diverse customer base, this publicity consolidates incoming remittance through a single messaging mechanism.

  3. Finally, the PbF network carries the remittance data when the payment advice method calls for a remittance mailbox maintained by one of the PbF processors.

    This is a store and forward messaging function. It may be implemented by the PbF processor systems themselves, or as a value-added function of the intervening network.

Since the PbF network is not directly involved in the payment transactions, it does not need to be protected by the strictest security procedures. Nonetheless some network security requirements apply to the PbF network. The following example threats should be kept in mind:

  1. A thief intercepts invoices from a supplier ABC corporation and changes the supplier's bank account number from "12346" to "12345". The thief must also update the ABC registration in the payment by fax payee directory to change the account number from "12346" to "12345". Then subsequent payments to ABC are misdirected to the thief's account, "12345".

  2. A customer of ABC corporation experiences financial difficulties and has exhausted its credit limits with ABC. The desperate customer fraudulently impersonates a PbF processor and issues a payment advice to ABC through the PbF network. This payment advice fools ABC's A/R department and a C.O.D. order is shipped to the customer, increasing the subsequent loss of ABC when its customer goes under.

  3. A payment to payee B must be made on a strict deadline by legitimate payor A, subject to a severe penalty which would indirectly benefit a thief. The thief impersonates the payee B and revokes the authorization to use the payment by fax. Payment from A to B is thus delayed and the thief benefits from the contractual penalty imposed to A.

In all three examples, the functions devoted to the PbF network improves the overall security of the payment system. The PbF network must resist impersonation attacks. This can be achieved with access control and message authentication. The authenticity and integrity of beneficiary registration requests must be carefully checked, both at initial registration and subsequent updates or renewals.

Appendix A - Rationales for Payment Process Design

A.1 - Introduction

Payment by authenticated fax transmission proposed by CONNOTECH may have a significant influence on the U.S. payment system. This document states the design principles for the required back office systems. It highlights the spread of liabilities for some EFT payment errors and shows how payment by fax attenuates the payment risk for all participants. This document also discusses the important issue of payment advice to the beneficiary.

Every payment method is subject to some forms of errors, inadvertently or deliberately introduced in the system. Errors may create liabilities that were not originally intended by the parties acting in good faith. As shown in the following discussion, the transition to EFT also changes the possible sources of errors, somehow shifting part of the payment risk from the beneficiary to the payor. Payment by fax is designed to minimize the consequences of the increased payment risk to the payor.

With paper checks, the payment advice occurs naturally as the beneficiary processes incoming mail and prepares a bank deposit. This is not the case with EFT where a payment advice is required, either as part of a periodic statement or as an isolated payment advice. Payment by fax is a unique EFT mechanism by virtue of being highly compatible with the contents of an envelope. In other words, since any remittance document can be sent by fax, payment by fax is the EFT mechanism that can replace all paper checks of a payor in the near term.

A.2 - Payment Liabilities

Simply stated, a business payment is the transfer of money from the payor's bank account to the beneficiary's bank account. Yet a business payment is not complete without a payment advice so that the purpose of the payment is fully known to the beneficiary. Translated into simplified information handling principles, there are two required transmissions:

  1. from the payor to an entry point in the payment system, a payment message indicating
    a) the payor's bank routing number,
    b) the payor's account number,
    c) the beneficiary's bank routing number, and
    d) the beneficiary's account number;
  2. a payment advice to the beneficiary.

Throughout the banking industry, processing efficiency is based on using bank and account numbers to identify beneficiaries, putting the beneficiary's name in the background.

With check payment, the entry point to the check clearing system is the beneficiary's bank where the check is deposited ("bank of first deposit"). The beneficiary's bank routing number and the beneficiary's account number are specified once for all deposited checks. This information is reliable because business beneficiaries will usually not attempt to deposit a check paying an unrelated party. Also payments are usually mailed to the proper address.

For the payor identification, the MICR line of each check provides the payor's bank routing number and the payor's account number with a negligible inadvertent error rate. However, check fraud caused by deliberate introduction of erroneous checks is a major issue in the U.S. payment system, with a total loss of $815 million in 1993 (American Banker Association, Check Fraud Survey Report 1994).

After the conversion to EFT credit transfers, the entry point to the payment network is the payor's bank when it receives the payment request from the payor. Then the payor's bank routing number and the payor's account number need not be questioned (at least in the case of payment by authenticated fax transmission). On the other hand, the beneficiary's identification is subject to errors.

Here are some facts about the beneficiary's identification in the context of EFT:

  1. The main statutory source of law for business credit transfers in the U.S., UCC Art. 4A, allows the beneficiary's bank and the beneficiary to be identified by name only, number only, or name and number. However, in most actual situations, legal notices allow banks to rely strictly on numbers to process payment requests. This makes the payor liable in case of a discrepancy between beneficiary's name and account number.

  2. Indeed, the ACH payment network used in payment by fax is a bulk processing environment where individual payments are never reviewed by humans. There is no beneficiary identification validation after the issue of an ACH payment request.

  3. Identification of the beneficiary's bank is required in addition to the identification of the beneficiary itself. One could think that the payment system could automatically route the payment to the proper bank given an unambiguous beneficiary identification, but such is not the case.

  4. To account for the passive role of the beneficiary in individual payment transactions, the ACH Rules require a standing authorization from the beneficiary to the payor to make credit transactions (see note 6). Along with this standing authorization, the beneficiary typically indicates its bank name, bank routing number, and account number. Since ACH credit transfer volume is still small in comparison with checks, standing authorizations have yet to become a common business practice.

A.3 - EFT Penetration Challenges

In this overall context, the challenge of increasing EFT credit transfer usage can be stated to include:

  1. Educate payors to be extremely careful in using the correct beneficiary's bank routing number and beneficiary's account number, while not creating a negative perception of the overall EFT risk.

  2. Make it worthwhile and easy for beneficiaries to give the standing authorization.

  3. Provide cost-effective payment advice to the beneficiaries.

A.4 - Desirable Features for Payment by Fax

For the payor, here are the desirable features for payment by fax:

  1. The payor should be allowed to pay every beneficiary by authenticated fax.

  2. The payor should be allowed to send remittance information and the payment together.

  3. The payor should be allowed to use any format for remittance information, even if some standard format facilitates efficient processing.

  4. The payor should not be required to establish formal EFT relationships with each individual beneficiary.

  5. The payor entry of the beneficiary's bank and account number should be validated by the PbF processor.

  6. To reflect the cost structure of the payment by fax service, the transaction price for the payor should follow a three-tiered fee schedule: ACH with standard format remittance, ACH with free format remittance, and check issue

  7. The payor should have access to a directory search service to retrieve the payee's bank and account number.

For the payee, here are the desirable features for payment by fax:

  1. The payee authorization to receive money from payment by fax should be given only once for all payors.

  2. The payee's bank and account number should be made readily available to payors.

  3. The payment system should protect the payee against payment misdirection, caused either by inadvertent errors of by fraud.

  4. Where the payee would benefit from advanced payment advice options, (e.g., EDI), such options should be offered.

Document Notes

  1. For a comprehensive introduction to the U.S. payment system, see Furash & Company, Banking Role In Tomorrow's Payments System - Volume II - Payments System Overview, The Banker's Roundtable, 805 Fifteenth Street, NW, Suite 600, Washington, DC 20005 (tel 1-202-289-4322, fax: 1-202-785-2056), June 1994. [back to main text]

  2. The most prominent digital signature technology is "RSA" proposed in Rivest, R.L., Shamir, A., Adleman, L.M., A Method for Obtaining Digital Signatures and Public-Key Cryptosystems, Communications of the ACM, vol 21, 1978, pp 120-126. [back to main text]

  3. In economic terms, check float has a net negative value. The float is an interest-free loan with a very short term. Because the clearing delay is unpredictable, significant uncertainty surrounds the actual term of this loan. The economic value of this loan is thus less than the interest cost incurred by the banks. Check fraud is another cost factor associated with float which is not passed as a benefit to the payor. Payment by fax and other EFT mechanisms are win-win opportunities in these respects. [back to main text]

  4. A payee who insists on being paid by check may be paid via authenticated fax transmission. In this case, the check is actually printed and mailed by the payment by fax processor. This service is already offered by some banks as part of EFT services. [back to main text]

  5. While payment by fax is a replacement technology for all checks issued by a payor, some payment by fax transactions are turned into a paper check by the payment processor. The payment processor can transmit to the payor bank the cumulative amount of checks issued in this way. This information may be useful to the bank in monitoring business customers facing financial difficulties. [back to main text]

  6. A provision exists in the ACH Rules to account for the circumstance where a beneficiary wants to actively reject a given payment (ACH Rule 4.4.3). For instance, in a dispute over a lease renewal, the lessor may receive legal advice to return any payment from the lessee in order to deny the very existence of the lease renewal. [back to main text]

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