AG Projects NGN Signaling Forum - 2006 Telecom Signaling Networks and Service Forum January 17, 2006...

AG Projects NGN Signaling Forum - 2006

Telecom Signaling Networksand Service Forum

January 17, 2006Amsterdam


I am a bachelor of electrical engineeringMember of ETSI ENUM task forceMember of management board of

OpenSER projectCo-chair of ISOC NL SIP Working groupFounder of AG Projects

I am Adrian Georgescu


AG Projects delivers simple SIP and ENUM solutions that delivers today what IMS promises it will deliver tomorrow


The opinions expressed in this presentation belong to myself, my company and most of my friends


Numbering and addressing in NGNBusiness models around ENUM


For those who don't know NGN is the Internet


Even if you don’t agree with it


All IP means the Internet

full stop.


From the old PSTN ONLY the E.164 numbering plan remains


SS7, ISDN, MTP, SCP, SP, TCAP, ISUP, MAP, IN all go away


And you migrate to all IP, SIP based communications


Using the big, bad, ugly Internet


No QoS, no guarantee, no central control, no regulation, no monopoly


Internet, a dumb network

Its role is merely to deliver packets from A to B


The services (applications) are performed at the edge and not in the center


DNS is the only centralized resource on the Internet


DNS (Domain Name System) provides naming and addressing for the Internet


Internet is different than the PSTN


In PSTN the “intelligence” is at the center and the end-device is dumb


This why you still get only voice after 100 years of innovations


0800, 0900, prepaid, IVR all together is just one application: VOICE


On the Internet voice is just another application


Don’t negate it, on you laptops you have more then voice


Do you use SIP today?


Because of the laptop software policy of your employer it could be that you never experienced voice over IP


Not knowing how Internet works, is an ingredient of going bankrupt


Internet is based on the end-to-end principle, all “services” may be offered anywhere and can be accessed from everywhere


In Internet you have connectivity and applications


Voice is just another application


Next to email, web and others


Voice and other communications do not need a “service” provider at all, they are applications.

–Jon Peterson, ITU-IETF NGN Workshop, Geneva, May 2005


Actually, there is plenty to do for an operator if you don’t clutch at penny per minute anymore


Replace your marketing department and you will see how competitive and innovative you become


Internet intelligence is at the edge, this opens the competition with any new entrant


You most important technical assets today (your signaling point presence on the SS7 network) is not anymore a critical advantage


Today some work hard on copying PSTN concepts over an Internet infrastructure


IMS is an example of such concept


Technically complicated, appealing for decision makers who still try to lock users in a walled gardenVery good for the vendors


Differentiation in price become less and less an argument in a flate-rate services model


Paying for two networks PSTN and Internet is expensive, migrating to an all IP network should be cost effective


But you cannot keep the benefits for yourself, you must share them with your customers


You should not pay to migrate to IP if all you can offer is an old voice service


You cannot maintain your today’s revenues while offering only voice and paying for migration to IP


Innovation is the only possible driving force for new revenues, voice should be only one of the possible services


And innovation happens only at the edge, so don’t build a walled garden


Building walled gardens does not justify the costs and limit the innovation at the edge, the basic principle that boosted the Internet


By the time you finish building up your walled garden, the customers will be safely outside.

Adrian Georgescu


What assets do you have compatible with the Internet?


Your customers, obviously!


What can you offer them in the NGN context?


Internet Access (Copper, Fibber, Wireless)

Identity (SIM card)

Terminals (devices and software)

Presence (Integration between communication and business)

Digital identity and certificate management

Addressing and Numbering

Connection to and from PSTN


Addressing and Numbering


Address is a sticky product


Sticky products means sticky customers


You don’t want to loose your e-mail address, right?


Some accept to loose their telephone numbers and get new ones because of the geographic nature of numbering resources


NGN main addressing scheme is a SIP address

User@Domain


You can use a number but is still a number@domain

Number@Domain


A telephone number is just another attribute of the SIP address


You can have more than one telephone number mapped to a SIP address


My identity is [email protected]


You can reach me by both email and voice using SIP to [email protected]


I want to be reachable also from PSTN or IP devices with 12 keys


You can reach me if you dial:

+31208005169+40317105169 [email protected]


+31208005169+40317105169 [email protected]

[email protected]

From PSTN or Internet

From the Internet


+31208005169+40317105169 [email protected]

Mapping E.164 telephone numbers to IP addressing schemes is called ENUM

SIP


ENUM is defined by the Internet Engineering Task Force (IETF) in RFC3761 as:

the mapping of „Telephone Numbers“ to Uniform Resource Identifiers (URIs) using the Domain Name System (DNS) in the domain e164.arpa


The purpose of ENUM is to enable the convergence between the PSTN and the Internet and enable new applications based on E164 numbers


ENUM has been only recently adopted by 3GPP


ENUM is used today by VoIP operators. Eithout it, calls between their islands will still go through PSTN


Without ENUM there is no way you can address a subscriber from one IMS domain to another one

Because any number on IP is Number@DomainThe Domain part can be looked up only by an ENUM query


ENUM allows you to point a numbering resource to its network hosts and specify which protocol can be used to connect SIP,H323, SS7, Email, more than 15 are standardized today


Number portability on PSTN

Current telephone number portability works with limited success and dependent on regulatory in each country

VoIP Providers depend on SS7 IN database for number portability, is slow expensive and not Internet ready

• It takes 3 months to port my number from KPN to Vodafone• Porting numbers between mobile and fixed operators is still a

dream• Cannot port numbers from one country to another


Number portability on IP

By simply pointing the website name to the new IP address of the server you are done

When you move your website from one hosting provider to another you get a new IP address but you do not change the name of your website

On the Internet you already have portability. Without maybe being aware, everybody is using it, the DNS.


• You don’t send a fax• You don’t wait for 3 months• You do it yourself when you want and how you want


There is no regulatory, agency or government office that intermediates the changes in the DNS.

Internet is much more cost effective than PSTN, there are no administrative barriers that hinders the porting process



SIP protocol: maps the phone IP:port to a SIP address

ENUM protocol: maps the E.164 number to a SIP address

SIP with ENUM combine the logic of uniting the identity (from both Internet and PSTN) with the access, the device and the service

Voice over IP is another Internet application, so we can use the same principles that apply for web and e-mail


Sip:[email protected] Sip:[email protected]

[email protected]

+1-123-456789

End-user experience of number portability on IP


Business models based on ENUM


You can sell identities independent of the VoIP service


Connect VoIP islands (ENUM exchange)

Sell DID numbers worldwide

Enable video and IM for enterprises

Number portability solution (can replace COIN)


This presentation is available at:

http://ag-projects.com/ENUM/


Thank you

Adrian Georgescu [email protected]

AG Projects NGN Signaling Forum - 2006 Telecom Signaling Networks and Service Forum January 17, 2006...

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