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Store-and-Forward Full Internet Fax

This presentation by Dave Crocker from Brandenburg Consulting explores the future of store-and-forward fax services over the Internet. It details the technical aspects, ongoing standards efforts from the IETF Fax working group, and the integration of fax capabilities with email and multimedia objects. Key topics include document transmission, confirmation semantics, and a comparative analysis with traditional telephone services. The talk also highlights the challenges in standardizing interactivity and capabilities exchange, making a strong case for the ongoing evolution of Internet fax technologies.

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Store-and-Forward Full Internet Fax

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  1. Store-and-Forward Full Internet Fax Dave Crocker Brandenburg Consulting US: +1 (408) 426 9827 www.brandenburg.com MY: +60 (19) 3299 445 dcrocker@brandenburg.com Fax: +1 (408) 273 6464

  2. Dave Crocker Email, EDI, Fax, … Tech. development Startups MCI Mail Internet standards Standards mgmt Brandenburg Consulting Internet business plans Product, system designs Technical audits Internet standards tracking, contribution Pro-forma marketing

  3. Present in this talk • Store-and-forward fax • Standards effort • Technical details • Status

  4. Nature of fax service • What you already know... • Document transmission • Multi-media objects • Immediate confirmation • Broad reach • Very easy use • Value-added features • Multiple recipients • Sub-addressing

  5. Fax over the Internet? • Cheaper than telephone • Integrate with other services • Greater bandwidth (for color) • All the rest is (potentially interesting) commentary...

  6. Simple Mode review • Data • Tiff • Packaged in MIME as image/tiff • Transport • Classic, conformant Internet Mail • Telephone number encoding for offramp gateways to use

  7. Building on Simple Mode • Approach • Use Simple Mode • Add confirmation, capabilities exchange, “session” • Issues • Confirmation semantics between fax and email • Email asynchrony makes “exchange” problematic • Email “session” brand new

  8. Standards effort • Efforts • IETF-Fax working group now seems primary venue... • ITU schedule is creating the deadlines • Issues • Changes to email architecture? • Schedule

  9. Confirmation • Fax • Delivery confirmation • What does it really mean? • Email • Delivery Service Notice (DSN) • Message Disposition Notice (MDN)

  10. Confirmation / take 2 • If fax requires special confirmation mechanism • Won’t interwork with regular email • Might take longer to standardize • This is going to require compromise...

  11. Capabilities exchange • Email isn’t interactive • Can’t get capabilities before sending • Capabilities might be out of date • So, • Define information format • Define multiple ways to send/get it: Email/MIME, SMTP, Directory, …

  12. Capabilities / take 2 • Directory service • Very long on promises • Very short on service • No one mechanism likely to satisfy all needs • So, plan to use multiple • This is going to take compromise…

  13. “Session” mode • Email isn’t “real time” • But it can be pretty speedy • So, set up end-to-end, SMTP-based association for sending mail • “Confirmation” will be interactive • Capabilities exchange will be interactive

  14. Session mode / take 2 • Significant enhancement to Internet Mail • Architecture enhancements always challenging • Infrastructure (internal) changes always take long time

  15. Status • Seeking • Full set of draft specificaions for August IETF • ITU “determination” in early November • IETF completion in December • ITU approval in early ‘99

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