Title: Four Related Acronyms: ENUM, SIP, DMX and 2Pac How They All Come Together.
1Four Related Acronyms ENUM, SIP, DMX and 2Pac
How They All Come Together.
- Tom Kershaw
- Vice President, VoIP
- VeriSign
2Yet 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?
3What 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
4Some 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)
5Current 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
6Drivers 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
7Who Cares About ENUM?
What are you talking about?
I love ENUM! I have all of his CDs!
I dont care about ENUM!
8VoIP 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
9- Conclusion VoIP operators and users do not care
about ENUM at present - But there is someone who does care about ENUM..
10Who Cares About ENUM?
I Love ENUM!
ENUM is great! It makes me money.
11ENUM 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?
12Business/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 - Lots 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.
13Current 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 cant 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
14ENUM 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 Wont (at least not yet)
15Private Peering Real World Example
IN NAPTR 10 10 "u" "E2Usip"
!.!siptkershaw_at_verisign.com! IN NAPTR 10 10
"u" E2Umailto" !.!mailtotkershaw_at_verisign.c
om
Private Root
Private ENUM
Enterprise Location Server
Call Control
Call Control
Call Control
Call Control
16QoS 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
Federated Extranet (Domain Bridging NAP)
NRD
THIG
Redundant carrier-grade THIGs utilized by one or
more federation members
VoIP Gateway
Internet Gateway
MPLS CORE
INTERNET
PSTN
SITE A
SITE B
Internet/External connectivity is a completely
separate connection
Signaling
Bearer
17MPLS and ENUM
Federated Extranet (Domain Bridging NAP)
SS7
DNS
INTERNET
NRD
ENUM
PSTN
THIG
MPLS Carrier A
MPLS Carrier B
DA
Corporation A (MPLS VPN A)
Corporation B (MPLS VPN B)
Corporation B (MPLS VPN B)
Corporation A (MPLS VPN A)
Signaling
Bearer
18Public and Private A Real Example
IN NAPTR 10 10 "u" "E2Usip"
!.!siptkershaw_at_verisign.com! IN NAPTR 10 10
"u" E2Umailto" !.!mailtotkershaw_at_verisign.c
om
Austrian Public Root
VeriSign Private Root
Company 2
Company 1
19ENUM with SIP Functionality
EREG
IN NAPTR 10 10 "u" "E2Usip"
!.!siptkershaw_at_verisign.com! IN NAPTR 10 10
"u" E2Umailto" !.!mailtotkershaw_at_verisign.c
om
Tier 1 ENUM
Device Resources
Tier 2 ENUM
Location Server/Registrar
Call Control
Call Control
Call Control
Call Control
Perimeter Security and Interop Resources
20ENUM 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
21Conclusions
- 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
22ENUM is the Preferred Protocol of Gangsta Rap!
23Thank You