ISN Numbers Fast, Free, and Forever Yours Ben Teitelbaum, Internet2 John Todd, Tello Dennis Baron,...
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Transcript of ISN Numbers Fast, Free, and Forever Yours Ben Teitelbaum, Internet2 John Todd, Tello Dennis Baron,...
ISN NumbersFast, Free, and Forever Yours
Ben Teitelbaum, Internet2
John Todd, Tello
Dennis Baron, MIT
2“ISN Numbers: Fast, Free, and Forever Yours” March 16, 2006 Spring VON, San Jose, CA
Old World / New World
+1-734-352-7031 [email protected]
Deep bureaucratic hierarchy The world is flat (almost)
Telco provider control Be your own provider
Radically new devices / services
3“ISN Numbers: Fast, Free, and Forever Yours” March 16, 2006 Spring VON, San Jose, CA
SIP.edu
SIPProxy
SIP-PBXGateway
PBX
INVITE (sip:[email protected])
INVITE(sip:[email protected])
DNS SRV query sip.udp.bigu.edu
telephoneNumberwhere mail=”bob”
PRI / CASbigu.edu
CampusDirectory Bob's Phone
DNSSRV
SIP User AgentBasic Idea
• Grow SIP reachability at existing email addresses
• Leverage existing directories and PBXs
4“ISN Numbers: Fast, Free, and Forever Yours” March 16, 2006 Spring VON, San Jose, CA
Campus Deployments
5“ISN Numbers: Fast, Free, and Forever Yours” March 16, 2006 Spring VON, San Jose, CA
How to SIP from a 12-key phone?
Cell Phones
IP Desk Phones Legacy Desk
Phones
PSTN
Old World*Emerging New World
Solution:numeric aliases* Transitional period during which we have to
support these devices will last a long time!
6“ISN Numbers: Fast, Free, and Forever Yours” March 16, 2006 Spring VON, San Jose, CA
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)
ITAD Subscriber Numbers (ISN)
7“ISN Numbers: Fast, Free, and Forever Yours” March 16, 2006 Spring VON, San Jose, CA
Take an E.164 number
Convert it to FQDN
Query DNS for NAPTRs
Apply resulting regexs to get list of URIs:
ENUM in a Nutshell
+1-734-913-4257
7.5.2.4.3.1.9.4.3.7.1.e164.arpa.
sip:[email protected]:[email protected]:[email protected]
e164.arpa.
1.e164.arpa.
4.3.7.1e164.arpa. x.x.x.1.e164.arpa.
8“ISN Numbers: Fast, Free, and Forever Yours” March 16, 2006 Spring VON, San Jose, CA
Take an ISN
Convert it to FQDN
Query DNS for NAPTRs
Apply resulting regexs to get list of URIs:
ISN in a Nutshell
4257*260
7.5.2.4.260.freenum.org.
freenum.org.
260.freenum.org.
sip:[email protected]:[email protected]:[email protected]
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”.
9“ISN Numbers: Fast, Free, and Forever Yours” March 16, 2006 Spring VON, San Jose, CA
Trial just starting up• Supported by Internet2, Packet Clearing House, MIT, Tello
ISN Cookbook Published• Recipes for SER and Asterisk
73 ITADs assigned so far
ISN Status
10“ISN Numbers: Fast, Free, and Forever Yours” March 16, 2006 Spring VON, San Jose, CA
Assigned ITADs (as of 3/15/06)
Academic• Internet2• Hofstra University• UCLA• MIT• Stanford• University of Alaska Fairbanks• University of California, Berkeley• Florida State University• University of Manitoba (Canada)• University of Oregon• Royal Institute of Technology (Sweden)• NE Worcestershire College (England)• Trent University (Canada)• University of North Carolina• University of Texas, Austin• Columbia University• UCSD• Taiwan Academic Network
Corporate Enterprises• Sterling National Bank• Apple Computer
VoIP Service Providers• Free World Dialup• Stealth Communications• SIPcall.com• RCN Corporation• VoIPteq• SIP Broker
Other• BizFu (web hosting)• Manitoba New Democratic Party• Packet Clearing House• +36 others
VoIP Solution Providers• Tello• Iotum• Digium
Government• State of Oregon
11“ISN Numbers: Fast, Free, and Forever Yours” March 16, 2006 Spring VON, San Jose, CA
ISN in Four Easy Steps
1. Request an ITAD from IANA• Simple piece of email• 2-week turnaround
2. 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:\\[email protected]!" .
• Option2: Have root zone delegate to your own nameservers
3. Enable inbound ISN calling
4. Enable outbound ISN calling1. Option1: Native ISN lookup2. Option2: Using Tello SIP redirector3. Option3: Using Tello private ENUM
12“ISN Numbers: Fast, Free, and Forever Yours” March 16, 2006 Spring VON, San Jose, CA
ISN vs ENUM vs SIP AOR
ISN ENUM SIP AOR
Example 7031*260 +1-734-352-7031 [email protected]
Familiarity Huh? Phone numbers Email address
Delegating Authority
IANA ITU, national government, …
ICANN, TLD registrars
Address Structure
local*domain Hierarchical / geographical
local@domain
Portability With domain owner’s cooperation
Varies by country???
With domain owner’s cooperation
FragmentationOne space Puclic ENUM + multiple private ENUMs
One space
13“ISN Numbers: Fast, Free, and Forever Yours” March 16, 2006 Spring VON, San Jose, CA
For More Information
ISN Cookbook, FAQ, and other info• http://freenum.org/
Further Questions?• Ben Teitelbaum
–[email protected] | 7031*260
• John Todd–[email protected] | 2405*259
• Dennis Baron–[email protected] | 21232*270