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ISN in a Nutshell

ISN in a Nutshell. 21st APAN Meeting Tokyo, Japan January 25, 2006 Ben Teitelbaum http://people.internet2.edu/~ben/. What if SIP.edu Succeeded?. SIP.edu’s Big Goals Better than POTS Campus-enabled Converged address

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ISN in a Nutshell

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  1. ISN in a Nutshell 21st APAN Meeting Tokyo, JapanJanuary 25, 2006 Ben Teitelbaumhttp://people.internet2.edu/~ben/

  2. What if SIP.edu Succeeded? • SIP.edu’s Big Goals • Better than POTS • Campus-enabled • Converged address • But, users won’t adopt advanced communications if the rest of the world can’t call them • The problem is not:“How to preserve E.164?” rather, the problem is…

  3. IP Desk Phones Legacy DeskPhones PSTN Cell Phones How to SIP from 12-key phones? Old World Emerging New World

  4. Head Scratching in SIP.edu WG • IVR Gateway • Hash Registrar • Domain Redirect • ISN • Improvement on Domain Redirect • Inspired by INOC-DBA

  5. ITAD Subscriber Numbers (ISN) • 4257*260 • ITADs • Defined by Telephony Routing over IP (TRIP) [RFC3219] • Globally unique • Lots of them (256 through 232-1) • IANA is already set up to allocate • ISN resolution works just like ENUM locallyassigned Internet Telephony Administrative Domain (ITAD)

  6. sip:bdr@internet2.edu mailto:bdr@internet2.edu sip:bobr_621@att.sbc.com ENUM in a Nutshell +1-734-913-4257 • Take an E.164 number • Convert it to FQDN • Query DNS for NAPTRs • Apply resulting regexs to get list of URIs: 7.5.2.4.3.1.9.4.3.7.1.e164.arpa. e164.arpa. 1.e164.arpa. 4.3.7.1e164.arpa. x.x.x.1.e164.arpa.

  7. sip:bdr@internet2.edu mailto:bdr@internet2.edu sip:bobr_621@att.sbc.com ISN in a Nutshell 4257*260 • Take an ISN • Convert it to FQDN • Query DNS for NAPTRs • Apply resulting regexs to get list of URIs: 7.5.2.4.260.freenum.org. freenum.org. 260.freenum.org. Note: We are working to ensure that the ISN root zone will be administered on behalf of the ISN user community by a neutral, non-profit organization. Following the trial, the root may or may not be “freenum.org”.

  8. Coming Soon Stanford (274) U Alaska (277) UC Berkeley (278) Florida State U (280) U Manitoba (281) U Oregon (283) +22 others ISN Status • Trial just starting • Supported by Internet2, Packet Clearing House, MIT, Tello • ISN Cookbook Published • Recipes for SER and Asterisk • Registered ITADs • Today • Internet2 (260) • FreeWorld Dialup (262) • Hofstra University (264) • UCLA (269) (accepting) • MIT (270) (accepting) • State of Oregon (276)

  9. ISN in Four Easy Steps • Request an ITAD from IANA • Simple piece of email • 2-week turnaround • Publish your ITAD/ISN information in DNS • Option1: Put full NAPTR in root zone*.xxx.freenum.org IN NAPTR 100 10 "u" "E2U+sip” "!^\\+*([^\\*]*)!sip:\\1@sip.big.edu!" . • Option2: Have root zone delegate to your own nameservers • Enable inbound ISN calling • Enable outbound ISN calling • Option1: Native ISN lookup • Option2: Using Tello SIP redirector • Option3: Using Tello private ENUM

  10. More Information • ISN Cookbook • http://www.internet2.edu/sip.edu/isn/ • Web Site • http://www.freenum.org/ • Further Questions? Email us… • John Todd jtodd@tello.com • Ben Teitelbaum ben@internet2.edu • Dennis Baron dbaron@mit.edu

  11. Thanks!

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