four related acronyms: enum, sip, dmx and 2pac how they all come together…
DESCRIPTION
Four Related Acronyms: ENUM, SIP, DMX and 2Pac How They All Come Together…. Tom Kershaw Vice President, VoIP VeriSign. Yet Another Take On ENUM…(aka Agenda). ENUM Defined for the 34,567 th time ENUM the Theory “Peering,” Traffic Sharing, Killing the PSTN etc The SIP Way The ENUM Way - PowerPoint PPT PresentationTRANSCRIPT
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Four Related Acronyms: ENUM, SIP, DMX and 2Pac How They All Come Together….
Tom Kershaw
Vice President, VoIP
VeriSign
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Yet Another Take On ENUM…(aka Agenda)
+ ENUM Defined for the 34,567th time
+ ENUM the Theory
+ “Peering,” Traffic Sharing, Killing the PSTN etc▪ The SIP Way▪ The ENUM Way
+ The IETF View v. The Carrier View v. the End User View
+ Does QoS Matter?
+ Does Network Interoperability Matter?
+ Why Do Gangsta Rappers Love ENUM?
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What Is ENUM?
+ ENUM is a protocol+ Born in the IETF+ Simple Concept: Use DNS to resolve addresses for VoIP+ Approved, Done, and Nothing Controversial
+ If We Just Talked About ENUM the Protocol, this would be a very short conference
+ ENUM is a Political Movement+ Ownership of Addresses+ National Sovereignty+ Tom Cruise and Katie Holmes+ Global Disarmament+ Etc.
+ There is a strong need to separate the protocol/implementation issues from the public policy issues
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Some Initial Comments on ENUM
+ Private (Carrier) ENUM v. Public (User) ENUM+ Debates, Controversy, Confusion+ The Key Points:+ Carrier and User ENUM are different and should have
different structures+ Carrier and User ENUM are consistent and can co-exist
peacefully+ There is no clear agreement on what ENUM is for:+ The wonderful world of the Internet+ The wonderful world of the PSTN+ The alleged convergence of these two things+ OR….Something totally different
+ SIP Peering is 100x bigger than ENUM right now…+ ….(which is like Luxembourg calling Lichtenstein small)
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Current State of ENUM
+ Public ENUM trials and “production” environments+ Austria, Australia, Korea are leading+ Volume is very small+ Driven by the Internet Community+ Dependent on users actually caring+ Public ENUM Regulatory Bodies+ U.S., Japan+ Driven by the PTTs+ User involvement is little to none+ Private ENUM efforts+ Cable+ Mobile Operators
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Drivers for ENUM
+ The Driver Matters – Results are Different
+ Internet Community Driven
+ PTT Driven
+ Mobile Content Driven
+ Our View: What is the Goal of ENUM – To Drive IP-to-IP
Communications that goes beyond traditional voice
+ People assume that VoIP operators and users are driving ENUM –
but they are not
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Who Cares About ENUM?
I don’t care about ENUM!
What are you talking about?
I love ENUM! I have all of his CDs!
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VoIP and ENUM
+ ENUM is not relevant to VoIP yet+ Volumes are too small+ Japan Case+ 10 million VoIP endpoints+ 10% x 10% = 5% of calls are IP to IP+ Benefits of the query with a 5% resolution rate is
questionable+ ENUM matters only when you can drive res rates above 25%+ Enterprise Verticals+ Communities of Interest+ Peered Private-Public ENUM structures+ Cable Efforts are Likely to be Key Drivers+ IE – we have to drive volume and drive resolution rates up
collectively rather than pursuing our own private interests
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+ Conclusion: VoIP operators and users do not care
about ENUM at present
+ But there is someone who does care about ENUM…..
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Who Cares About ENUM?
I Love ENUM!
ENUM is great!
It makes me money.
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ENUM and Mobile Content
+ ENUM is currently driven by mobile content
+ 50 Cent makes more money off of ENUM than all the VoIP
operators combined
+ When a user downloads a ringtone, it is sent to the destination
MMSC using SMPP
+ SMPP requires a mailto: address
+ ENUM is used to discover the mailto: address of the destination
+ This application leads to some perverse results
+ how to you map the phone number to the correct mailto:
+ what if the number is ported?
+ what is the number is issued under an MVNO?
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Business/Regulatory State of the “Roots”+ Tier 0:
▪ Only one database controlled by RIPE NCC and ITU (policy only)
▪ Contains participating country codes.▪ Delegation would be at the NPA level for the US
+ Tier I:▪ Several valid country specific public trials – Austria is leading▪ U.S. has decided to issue a tender for CC1, split into to
administrative domains▪ Lot’s of Boring Trials Going on Now
+ Tier II:▪ A Few Interesting Trials Underway▪ Every Carrier and Cooperative will have a Root▪ VoIP Tier IIs brag about 500K users; Mobile will be in the 50
Millions soon
There are actually many ways to do this….
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Current Issues With ENUM
+ Very few VoIP platforms support ENUM today
+ Nobody has figured out how to make money from ENUM yet
+ Nothing in ENUM you can’t do with SIP
+ Huge political issues over data ownership▪ Two camps: ▪ I want the data and I want everything to be free
+ ENUM solves only a small part of the problem▪ Where you are is easy – how to get to you in a secure, reliable matter is
another issue
+ Mobile Content application is creating a critical mass in ENUM that
is not necessarily consistent with the VoIP application
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ENUM: Missing Pieces
+ I Know the Destination Domain of the Called Party+ I Can Now Query the Destination to Find the IP Address
+ But:+ What QoS Rules are Associated with the Destination+ What Protocol/Variations are Available at the Destination+ What Network Path to Take+ What Security Policies/Keys Are Needed
+ ENUM provides the information, but assumes the network will be able to figure it out.
+ Reality: It Won’t (at least not yet)
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Private Peering: Real World Example
Private Root
Private IP Backbone
Enterprise Location Server
Private ENUM
Call Control
Call Control
Call Control
Call Control
IN NAPTR 10 10 "u" "E2U+sip" “!^.*$!sip:[email protected]!”
IN NAPTR 10 10 "u" “E2U+mailto" “!^.*$!mailto:[email protected]
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QoS: Perceived if Not Real
+ Many Carriers & Enterprises utilize MPLS for Real-Time Transport▪ Connection oriented traffic engineering with bandwidth protection▪ Quality-of-Service mechanisms (e.g. voice prioritization) ▪ Secure MPLS Tunnels/MPLS Virtual Private Networking
+ Problem: No Exit▪ MPLS protects the on-net traffic▪ There is no way off▪ Firewalls are never touched
INTERNET PSTNMPLS CORE
VoIP Gateway
Federated Extranet (Domain Bridging NAP)
SITE A
Internet Gateway
THIG
NRD
SITE B
BearerSignaling
Redundant carrier-grade THIGs utilized by one or more federation members
Internet/External connectivity is a completely separate connection
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MPLS and ENUM
BearerSignaling
INTERNET
PSTN
Federated Extranet (Domain Bridging NAP)
Corporation A(MPLS VPN A)
NRD
THIG
Corporation B(MPLS VPN B)
MPLS Carrier A
Corporation B(MPLS VPN B)
MPLS Carrier B
Corporation A(MPLS VPN A)
SS7
ENUM
DNS
DA
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Public and Private: A Real Example
Austrian Public Root
Public IP Backbone
VeriSign Private
Root
Company 2Company 1
IN NAPTR 10 10 "u" "E2U+sip" “!^.*$!sip:[email protected]!”
IN NAPTR 10 10 "u" “E2U+mailto" “!^.*$!mailto:[email protected]
Private IP Backbone
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ENUM with SIP Functionality
Tier 1 ENUM
Option 1
Location Server/Registrar
Tier 2
ENUM
Call Control
Call Control
Call Control
Call Control
IN NAPTR 10 10 "u" "E2U+sip" “!^.*$!sip:[email protected]!”
IN NAPTR 10 10 "u" “E2U+mailto" “!^.*$!mailto:[email protected] Resources
EREG
Option 2
Option 3
Perimeter Security and Interop Resources
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ENUM Issues to Be Resolved
+ Critical Mass (the Network Problem)
+ Application developers
+ Public or private directories
+ Update rate
+ One or many - providers, databases, …
+ Regulatory and policy issues
+ New identifiers
+ Coverage
+ PSTN Service Logic
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Conclusions
+ ENUM is currently a mess
+ Private, Public, Mobile applications are uncoordinated and there is
mass confusion
+ Keep the end goal in mind – creating a public IP infrastructure for
applications (voice, video, IM, gaming, etc)
+ Opt-Out of Opt-In
+ First to 30 million wins
+ Anyone doing Private ENUM that is not peering is being short-
sighted
+ And finally…
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ENUM is the Preferred Protocol of Gangsta Rap!
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Thank You