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Online Vending Specification Project: NRS009-6-10 / XMLVend

Online Vending Specification Project: NRS009-6-10 / XMLVend. NRS009 -WG 12/05/2004 Kennedy P Subramoney. Eskom ( NRS Project Management Agency Resources and Strategy Group ). Developments since last meeting.

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Online Vending Specification Project: NRS009-6-10 / XMLVend

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  1. Online Vending SpecificationProject: NRS009-6-10 / XMLVend NRS009 -WG 12/05/2004 Kennedy P Subramoney Eskom (NRS Project Management Agency Resources and Strategy Group)

  2. Developments since last meeting • Project Working Group meeting was held on the 17 November 2003 in Cape Town, where several key decisions were taken. • XMLVend 1.0 frozen end January 2004. • XMLVend 1.0 release for “Trial Use” end February. • Eskom, Manguang and Ethekweni are at advanced stages of the procurement processes for Online Vending Systems based on XMLVend. • NRS has agreed to fund continued development of the specification to a Version 2 (after Pilot) • A article on XMLVend 1.0 was published in the March 2004 issue of Energize.

  3. XMLVend 1.0 Implementation Models • Model 1

  4. XMLVend 1.0 Implementation Models • Model 2 (B2B)

  5. Use Cases • 12 Consumer and Operator Use Cases – define the functionality of the system. • Confirm Customer / Meter Details (UC101) • Purchase Credit Token (UC102) • Receive EBSST Token (UC103) • Reprint Token (UC104) • Cancel Token (UC105) • Vend Trial Token (UC106) • Vend Replacement Token (UC107) • Log in (UC501) • Log out (UC502) • Start Batch (UC503) • End Batch (UC504) • Check Batch Totals (UC505)

  6. Message Pairs And Data Model • Message Pairs are used to implement each Use Case. • The Data Model defines an XML vocabulary for Prepayment Vending.

  7. Data Model Example <Login_Request> (ClientID) (TerminalID) (MsgID) (OpName) ? (Password) ? (Custom) ? </Login_Request> <Login_Response> (TerminalID) (MsgID) (CurrentVendorCredit) (OperatorMsg) ? (Custom) ? </Login_Response>

  8. Client (System) Reversals and Confirmations Two options: • Client Request -> if server response received then do nothing.If no response (after n retries), then send a system reversal message. • Client Request -> always sends an advice message, if ok, then an advice confirmation message sent. If problem (after n retries), then send an advice system reversal message. • This applies to Purchase Credit Token and Replacement Token only. • System reversals have been introduced due to the unreliable nature of Online Vending communications. • To reduce “pending transactions”. • To assist with the reconciliation process.

  9. XMLVend 1.0 Specification Stack

  10. Security Options • NRS Specification • SSL/TLS • 128bit server certificates • 40 / 128 client certificates • NRS CA ??? • VPN • Network Layer Security

  11. Compression • An optional compression algorithm has been include in the specification.

  12. Next Steps…. • We have achieved phase 1 of the project, release of Version 1. • Phase 2 of the specification is to stabilise and promote the use of the specification. • Development of a compliance Test Suite. • Proactively move towards XMLVend 2.0 by monitoring and evaluating specification performance in pilots. • Presentation of the specification to greater Prepayment community – SAPW. • Engage other token providers, such as Telkom, Vodacom, MTN, Cell C

  13. Mission: NRS009-6-10 To be continued...

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