Initial Deployment of ENUM in Singapore( VoIP Special Interest Group)

Yin Ma ThweSingapore Polytechnic

5th July 2004

Outline

Introduction to VoIP Introduction to ENUM What VoIP SIG have done

Scope of VoIP SIG

Focused on VoIP Technologies and applications and aspects related to the research, experimentation, innovation, early adoption, deployment and maintenance of these resources over advanced networks such as SingAREN and its counterpart research and education networks internationally.

http://singaren_voip_sig.i2r.a-star.edu.sg/

Introduction to VoIP

What is Voice over IP (VoIP)?

Internet/Private IP Network

) ) )) ) )10101010000101010101000010100101010101010010101010101001010101010100101010101001010100010010101010001001

IP PacketIP Packet10101010000101010101000010100101010101010010101010101001010101010100101010101001010100010010101010001001

IP PacketIP Packet10101010000101010101000010100101010101010010101010101001010101010100101010101001010100010010101010001001

10101010000101010101000010100101010101010010101010101001010101010100101010101001010100010010101010001001

( ( (( ( (

What is IP Telephony ?

VoIP : Use of Private NetworksInternet Telephony : Use of Public NetworkIP Telephony : VoIP + Internet Telephony

ITU DefinitionsITU DefinitionsITU DefinitionsITU Definitions

End points are IP?Hmm…

IDA has framework for VoIP

SG DefinitionsSG DefinitionsSG DefinitionsSG Definitions

This deployment is VoIP (end points are PSTN)

VoIP DeploymentsPhone to Phone

is mainly provided by Service Provider or

Private Network (E.g. Singtel’s 019)

1998

IP Phone to IP Phone is mainly provided by

Service Provider orself Managed

(E.g. Free World Dial)

2002

post2003

PC(Web) to Phone is mainly provided by Service Provider(E.g. Web2Phone)

1999

Wireless IP Phone to Wireless IP Phone

will be provided by whom?

Demo: IP-to-IP Calls

InternetInternet

Demo: IP-to-PSTN Calls

InternetInternet

PSTNPSTN

Implications

No more time-based telephony charges

No more time-based telephony charges

No concept of local call, long-distance call or IDD call

No concept of local call, long-distance call or IDD call

Change in Business Paradigm

Infrastructure Infrastructure

Voice Service

Data Service

Value-Added Service

Data Service

Value-Added Service

Voice

Traditional Telecom Model New Telecom Model

“The most powerful paradigm shift is the fact that applications are not woven into the platforms. Now to be a phone company, you don't have to weave tightly the voice service into the infrastructure. They (Vonage) turn voice into a application and shoot it across one of these platforms. And, suddenly, you're in your business.”

– Michael Powell, Chairman of FCC

Technical Issues

How secure is IP Telephony? What about wiretapping requirements?

Security and PrivacySecurity and PrivacySecurity and PrivacySecurity and Privacy

To achieve interoperability between different IP Telephony services,What should be the technical common platform?What are the technical specifications to adopt?

Technical ArchitectureTechnical ArchitectureTechnical ArchitectureTechnical Architecture

What is the acceptable QoS for IP Telephony? How to ensure QoS?

Quality of ServiceQuality of ServiceQuality of ServiceQuality of Service

Business Issues

Who can interconnect to PSTN?What is the pricing model?

InterconnectionInterconnectionInterconnectionInterconnection

What’s is the numbering plans for IP Telephony?How are numbers assigned for IP Telephony services?What if there is no service provider?

NumberingsNumberingsNumberingsNumberings

What is the economic impact? How would it change the telco landscape?(cost to setup IP Telephony service ~= cost to setup Email service)

Market StudiesMarket StudiesMarket StudiesMarket Studies

Regulatory Issues

How do we classify all the different IP Telephony services?Are they subjected to similar “regulation”?

ClassificationClassificationClassificationClassification

Who needs to apply for license? What if there is no service provider?

LicensingLicensingLicensingLicensing

Is it applicable to IP Telephony? How about emergency numbers?

Universal AccessUniversal AccessUniversal AccessUniversal Access

Introduction to ENUM

What is ENUM

RFC 3761 defined by IETF - The E.164 to Uniform Resource Identifiers (URI) Dynamic Delegation Discovery System (DDDS) Application (ENUM)

This document discusses the use of the Domain Name System (DNS) for storage of E.164 numbers. More specifically, how DNS can be used for identifying available services connected to one E.164 number.

Electronic Numbering (ENUM) provides a mechanism to assign an E164 phone

number to an IP resource.

Electronic Numbering (ENUM) provides a mechanism to assign an E164 phone

number to an IP resource.

sip:xiayang@sp.edu.sg+65 6411 1201

sip:dickson@poc.tech.org.sg+65 6411 1000

What is ENUM

How does ENUM work

take a phone number

+65-6411-1234

…and turn it into a domain name!

4.3.2.1.1.1.4.6.5.6.e164.arpa

How does ENUM work

ask the DNS

get a list or URIs returned

4.3.2.1.1.1.4.6.5.6.e164.arpa

http: www.ida.gov.sg

sip: dickson@poc.tech.org.sg

mailto: dickson@ida.gov.sg

Three Tier Model

Tier 0 – e164.arpaITU

Tier 1 – 5.6.e164.arpaCountry Level (Singapore)

Zone Delegation, i.e.e164.arpa to 5.6.e164.arpa

Tier 2Has the NAPTRs in it, i.e. for4.3.2.1.1.1.4.6.5.6.e164.arpa

Zone Delegation, i.e.5.6.e164.arpa to 1.1.4.6.5.6.e164.arpa

How does ENUM work

ENUM in IP Telephony

“Call setup”

SIPdickson@poc.tech.org.sg

Query4.3.2.1.1.1.4.6.5.6.e164.arpa.?

Dial+65 6411 1234

DNS-Server

Sip serverGateway

Responsesip:dickson@poc.tech.org.sg

What problem does ENUM solve?

Legacy phone calls to IP phone Two different routing domains, need

mapping

IP-Network

SS7

SwitchSTP

PSTN / ISDN

Technology adoption life cycle

Innovators(technical people)

Early adopters(visionaries)

Early majority(pragmatists)

Late majority(conservatives)

Laggards(sceptics)

Main market

(Geoffrey Moore, Chasm Group)

Technology adoption life cycle

Innovators(technical people)

Early adopters(visionaries)

Early majority(pragmatists)

Late majority(conservatives)

Laggards(sceptics)

Main marketENUM

Country Code Delegations 31

Netherlands 33 France 36 Hungary 41 Switzerland 40 Romania 43 Austria 44 UK 46 Sweden 48 Poland 49 Germany 55 Brazil 65 Singapore

86 China 246 Diego Garcia 247 Ascension 290 Saint Helena 353 Ireland 358 Finland 374 Armenia 420 Czech 421 Slovakia 423 Liechtenstein 971 UAE

Worldwide ENUM Activities Austria http://enum.nic.at/

China http://www.enum.cn/index-en.html

France http://www.numerobis.prd.fr/welcome.shtml

Germany http://www.enum-center.de/

Netherlands http://www.enuminnederland.nl/

Korea http://www.enum.or.kr/en/

Sweden http://enum.autonomica.se/

UK http://www.ukenumgroup.org/

US http://www.enum-forum.org/

AP ENUM Activities (Australia)

ACA released “Expression of Interest” for Tier 1 Registry Operator for Australian ENUM Trial closing date 7 July 2004

ENUM Trial will run for 12 months, with the option of a 12 months extension.

Workshops and seminars organised, and ENUM discussion group formed

ENUM Website: http://www.aca.gov.au/telcomm/telephone_numbering/enum_nsg2/index.htm

AP ENUM Activities (China) Led by Ministry of Information Industry Study of technical and administrative issues Detailed ENUM trial plan is being prepared Active involvement in ITU-T (SG2) discussions Security and reliability issues very important Several carriers / vendors / service providers show

great interest Web Site:

http://www.enum.cn/Enum/EnumReg/English/home.php

AP ENUM Activities (Japan) MPHPT studying regulatory issues Signed MoU with South Korea on ENUM

DNS in Feb 2004 Considering ENUM trial Interest in security and privacy issues Administrative and operational arrangements

under study Web Site:

http://etjp.jp/english/index.html

AP ENUM Activities (Korea) ENUM National Trial implementation (funded

by Korean Ministry of Information and Communication)

ENUM test bed project established Feb 03 Broad involvement from DNS and telephony

community Interest in commercial applications and

ENUM APIs ENUM Website: http://

www.enum.or.kr/kr/intro.html

AP ENUM Activities (Taiwan)

Joint government, research, telecommunications company and ISPs involvement

Establishment of ENUM test bed Seminars, workshops and study groups Interest in determining successful

business models http://trial.enum.org.tw

ENUM Activities (Singapore)

Singapore received its country code top level delegation

Exploring the technical issues relating to ENUM

Working towards an ENUM trial Liaising with industry regarding ENUM

issues

ENUM Activities (APEET)

Asia Pacific ENUM Engineering Team consists of ccTLD administrators: SGNIC, CNNIC, JPRS, KRNIC, TWNIC

Objective to conduct ENUM/SIP trials using the common golden root of “apenum.org”

Website: http://www.apenum.org/

Infrastructure ENUM

“Infrastructure ENUM” (e.g. ibm.com, apenum.org) taking off more rapidly than “Individual ENUM” (e164.arpa)

May be driving force due to ease of mirroring DNS records from one domain to another

ENUM Implications

E164 numbers available for IP TelephonyE164 numbers available for IP Telephony

Driving factor for IP Telephony, leading to convergence of PSTN and Data Networks

Driving factor for IP Telephony, leading to convergence of PSTN and Data Networks

ONE number for telephone, fax, e-mail, web site address

ONE number for telephone, fax, e-mail, web site address

Considerations for ENUM Implementation

Who should administer ENUM database at a national level?How do we choose the administrator?Should there be multiple entities managing multiple number ranges?

AdministrationAdministrationAdministrationAdministration

What should be the cost of ENUM registration?Should there be a bidding process for golden numbers?

Charging ModelCharging ModelCharging ModelCharging Model

Considerations for ENUM Implementation

Should participation in ENUM by telephone users be compulsory or should there be an opt-in?What are the procedures for protecting the security, integrity and privacy of the ENUM database?

Privacy & SecurityPrivacy & SecurityPrivacy & SecurityPrivacy & Security

Should there be a new range of numbers to delineate ENUM numbers?How do we ensure there is no “clash” with current PSTN numbers?How to ensure ENUM services complies with number portability arrangements

Numbering PlanNumbering PlanNumbering PlanNumbering Plan

What VoIP SIG have done

Internet

Commercial

Zone Commercial

Zone

Research & Education

Research & Education

Government Zone

Government Zone

ENUMNS

ENUMNS

SIP Server

SIP Server

SIP Server

ENUMNS

Intranet

PSTNPSTN

PSTN Gateway

PSTNPSTN

PSTN Gateway

PSTN Gateway

OverseasOverseas

SIP Server SIP Server

IP Telephony/Enum Trial Architecture

SingAREN VoIP Network

SingARENIDAIDA

SPSP

NTU

NTU

PSTN

PSTN

ENUMNS

ENUMNS

5.6.e164.arpa

1.1.1.1.4.6.5.6.e164.arpa

2.1.1.1.4.6.5.6.e164.arpa

PSTN Gateway

SIP Server

SIP Server

SIP Server

PSTN

PSTN

I2RI2RENUM

NS

ENUMNS

3.1.1.1.4.6.5.6.e164.arpa

PSTN Gateway

SingAREN VoIP Network

ENUM Delegation to NTU – 65-6411-11xx Singapore Poly – 65-6411-12xx I2R – 65-6411-13xx

Trial deployment of open-sourced SIP server (Asterisk) at NTU, Singapore Poly, I2R and IDA

Local PSTN connectivity via Cisco 2600 in IDA

Telcordia SoftswitchTelcordia Softswitch

Asterisk PBXAsterisk PBXVocal ServerVocal Server

6564111211IP Address:164.78.247.111

6564111210IP Address:164.78.247.110

IP Address:164.78.247.103

FXO Media GatewayFXO Media GatewayPSTNPSTN

IP Address:164.78.247.105

IP Address:164.78.247.101IP Address:164.78.247.102

BackboneNetwork

6564111212IP Address:164.78.247.112

65641112046564111202

6564111201

FXS Media GatewayFXS Media Gateway

IP Address:164.78.247.104

6564111203

Singapore Polytechnic SIP Network SetupSingapore Polytechnic SIP Network Setup

Wireless Access PointWireless Access Point

6564111221IP Address:164.78.247.121

6564111228IP Address:164.78.247.128

SINGAREN NetworkSINGAREN Network

DEMONSTRATION OF ENUM CALLSDEMONSTRATION OF ENUM CALLS65641112106564111210

65641112116564111211

1.1.2.1.1.1.4.6.5.6.e164.arpa1.1.2.1.1.1.4.6.5.6.e164.arpa

sip:6564111211@164.78.247.111sip:6564111211@164.78.247.111

Asterisk PBXAsterisk PBX

ENUM DNSENUM DNS

IDA SIP PROXYIDA SIP PROXY

NTU SIP PROXYNTU SIP PROXY

I2R SIP PROXYI2R SIP PROXY

IDA ENUM DNSIDA ENUM DNS

I2R ENUM DNSI2R ENUM DNS

SINGARENNetwork

SPNetwork

NTUNetwork

I2RNetwork

IDANetwork

6564111211

6564111211

Network Connection

Request

Response

RTP Session

SINGARENNetwork

SPNetwork

NTUNetwork

I2RNetwork

Asterisk PBXAsterisk PBX

ENUM DNSENUM DNS

IDA SIP PROXYIDA SIP PROXY

DEMONSTRATION OF ENUM CALLSDEMONSTRATION OF ENUM CALLS

NTU SIP PROXYNTU SIP PROXY

I2R SIP PROXYI2R SIP PROXY

IDA ENUM DNSIDA ENUM DNS

I2R ENUM DNSI2R ENUM DNS

65641112106564111210

65641111000

65641111000

0.0.0.1.1.1.4.6.5.6.e164.arpa0.0.0.1.1.1.4.6.5.6.e164.arpa

sip:dickson@ida.gov.sgsip:dickson@ida.gov.sg

6564111100065641111000IDA

Network

Network Connection

Request

Response

RTP Session

Thank You