Transcript Initial deployment of ENUM in Singapore research network

Initial Deployment of ENUM in
Singapore
( VoIP Special Interest Group)
Yin Ma Thwe
Singapore Polytechnic
5th July 2004
Outline
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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)?
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IP Packet
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Internet/
Private IP Network
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IP Packet
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What is IP Telephony ?
ITU Definitions
VoIP : Use of Private Networks
Internet Telephony : Use of Public Network
IP Telephony : VoIP + Internet Telephony
SG Definitions
This deployment is VoIP
(end points are PSTN)
IDA has framework for VoIP
End points are IP?
Hmm…
VoIP Deployments
1998
1999
2002
post
2003
Phone to Phone
is mainly provided by
Service Provider or
Private Network
(E.g. Singtel’s 019)
PC(Web) to Phone
is mainly provided
by Service Provider
(E.g. Web2Phone)
IP Phone to IP Phone
is mainly provided by
Service Provider or
self Managed
(E.g. Free World Dial)
Wireless IP Phone
to Wireless IP Phone
will be provided by whom?
Demo: IP-to-IP Calls
Internet
Demo: IP-to-PSTN Calls
Internet
PSTN
Implications
No more time-based
telephony charges
No concept of local call, longdistance call or IDD call
Change in Business Paradigm
Traditional Telecom Model
Value-Added
Service
Data Service
New Telecom Model
Voice
Value-Added Service
Voice Service
Data Service
Infrastructure
Infrastructure
“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
Technical Architecture
To achieve interoperability between different IP Telephony services,
What should be the technical common platform?
What are the technical specifications to adopt?
Quality of Service
What is the acceptable QoS for IP Telephony?
How to ensure QoS?
Security and Privacy
How secure is IP Telephony?
What about wiretapping requirements?
Business Issues
Interconnection
Who can interconnect to PSTN?
What is the pricing model?
Market Studies
What is the economic impact?
How would it change the telco landscape?
(cost to setup IP Telephony service ~= cost to setup Email service)
Numberings
What’s is the numbering plans for IP Telephony?
How are numbers assigned for IP Telephony services?
What if there is no service provider?
Regulatory Issues
Classification
How do we classify all the different IP Telephony services?
Are they subjected to similar “regulation”?
Licensing
Who needs to apply for license?
What if there is no service provider?
Universal Access
Is it applicable to IP Telephony?
How about emergency numbers?
Introduction to ENUM
What is ENUM
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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.
What is ENUM
Electronic Numbering (ENUM) provides
a mechanism to assign an E164 phone
number to an IP resource.
sip:[email protected]
+65 6411 1000
sip:[email protected]
+65 6411 1201
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
4.3.2.1.1.1.4.6.5.6.e164.arpa
ask the DNS
mailto: [email protected]
get a list or URIs
returned
sip: [email protected]
http: www.ida.gov.sg
Three Tier Model
Tier 0 – e164.arpa
ITU
Zone Delegation, i.e.
e164.arpa to 5.6.e164.arpa
Tier 1 – 5.6.e164.arpa
Country Level (Singapore)
Zone Delegation, i.e.
5.6.e164.arpa to 1.1.4.6.5.6.e164.arpa
Tier 2
Has the NAPTRs in it, i.e. for
4.3.2.1.1.1.4.6.5.6.e164.arpa
How does ENUM work
ENUM in IP Telephony
DNS-Server
Query
4.3.2.1.1.1.4.6.5.6.e164.arpa.?
Response
sip:[email protected]
“Call setup”
Dial
+65 6411 1234
SIP
[email protected]
Gateway
Sip server
What problem does ENUM solve?
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Legacy phone calls to IP phone
Two different routing domains, need
mapping
STP
Switch
SS7
IP-Network
Technology adoption life cycle
Late majority
(conservatives)
Early adopters
(visionaries)
Main market
Early majority
(pragmatists)
Innovators
(technical people)
(Geoffrey
Moore,
Chasm
Group)
Laggards
(sceptics)
Technology adoption life cycle
Late majority
(conservatives)
Early adopters
(visionaries)
ENUM
Main market
Early majority
(pragmatists)
Innovators
(technical people)
Laggards
(sceptics)
Country Code Delegations
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31
33
36
41
40
43
44
46
48
49
55
65
Netherlands
France
Hungary
Switzerland
Romania
Austria
UK
Sweden
Poland
Germany
Brazil
Singapore
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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
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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)
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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/en
um_nsg2/index.htm
AP ENUM Activities (China)
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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)
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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)
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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)
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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)
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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)
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Asia Pacific ENUM Engineering Team
consists of ccTLD administrators:
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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
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“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
ONE number for telephone, fax,
e-mail, web site address
E164 numbers available for IP Telephony
Driving factor for IP Telephony, leading to
convergence of PSTN and Data Networks
Considerations for ENUM
Implementation
Administration
Who should administer ENUM database at a national level?
How do we choose the administrator?
Should there be multiple entities managing multiple number ranges?
Charging Model
What should be the cost of ENUM registration?
Should there be a bidding process for golden numbers?
Considerations for ENUM
Implementation
Numbering Plan
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
Privacy & Security
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?
What VoIP SIG have done
IP Telephony/Enum Trial Architecture
Intranet
ENUM
NS
ENUM
NS
SIP Server
SIP Server
SIP Server
PSTN Gateway
SIP Server
Internet
ENUM
NS
SIP Server
PSTN Gateway
PSTN Gateway
SingAREN VoIP Network
ENUM
NS
ENUM
NS
1.1.1.1.4.6.5.6.e164.arpa
PSTN
Gateway
5.6.e164.arpa
SIP Server
SingAREN
PSTN
Gateway
SIP Server
ENUM
NS
SIP Server
ENUM
NS
2.1.1.1.4.6.5.6.e164.arpa
3.1.1.1.4.6.5.6.e164.arpa
SingAREN VoIP Network
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ENUM Delegation to
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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
Singapore Polytechnic SIP Network Setup
6564111221
IP Address:164.78.247.121
6564111203
6564111204
6564111202
Telcordia Softswitch
IP Address:164.78.247.103
FXS Media Gateway
6564111201
IP Address:164.78.247.104
Wireless Access Point
PSTN
6564111228
IP Address:164.78.247.128
FXO Media Gateway
IP Address:164.78.247.105
Backbone
Network
SINGAREN Network
6564111210
IP Address:164.78.247.110
Vocal Server
IP Address:164.78.247.101
Asterisk PBX
IP Address:164.78.247.102
6564111211
IP Address:164.78.247.111
6564111212
IP Address:164.78.247.112
DEMONSTRATION OF ENUM CALLS
6564111210
I2R SIP PROXY
I2R ENUM DNS
Asterisk PBX
ENUM DNS
I2R
Network
6564111211
SP
Network
SINGAREN
Network
NTU
Network
IDA ENUM DNS
IDA
Network
Network Connection
Request
Response
RTP Session
NTU SIP PROXY
IDA SIP PROXY
DEMONSTRATION OF ENUM CALLS
6564111210
I2R SIP PROXY
I2R ENUM DNS
Asterisk PBX
ENUM DNS
I2R
Network
SP
Network
SINGAREN
Network
NTU
Network
IDA ENUM DNS
IDA
Network
65641111000
Network Connection
Request
Response
RTP Session
NTU SIP PROXY
IDA SIP PROXY
Thank You