International Telecommunication Union
Issues, working
methods and
collaboration
B. Georges Sebek
ITU/TSB Engineer
ITU-T and ITU-D Workshop
Bangalore (India), 30-31 August 2001
Main issues covered by ITU-T
o
IP-related issues, IMT-2000, accounting
rates
•
•
o
Multimedia, access network (e.g. xDSL),
security, numbering and addressing, interoperability, languages, TMN, IPR, etc.
•
•
•
•
•
•
•
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ITU-T IP Project
IPCablecom Project
Mediacom 2004 Project
ANT
ENUM
ASN.1 Project
OTN
NGN
Performance & QoS
ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
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What are ITU-T Projects?
o Standardization domain identified as of
o
o
o
o
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importance
May be shared within several SGs
May correspond to (very) urgent market
needs
Needs for coordination
May be used to clarify areas for study
ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
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ITU-T IP Project
o Explosive growth of the
Internet/IP-based networks
o Ever increasing demand for
higher bandwidth/capacity
ITU-T and IETF Collaboration
must be strengthened
considering interest in ITU-T on
IP-based networks
IETF and ITU-T are not able to
providers and manufacturers adequately address this area
reconsider services, network independently
structures, products etc
IETF strength: protocol and
o IT and use of IP-based
application areas
networks and applications
ITU-T: great experience in the
(e.g. e-commerce) become
areas of architecture, network
critical factors in
interworking and network
development of telecom
evolution
networks
o Network operators, service
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ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
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ITU-T IP Project
o Since 1998, the IP project is updated by the SG 13 Project
Leader taking into consideration major deliverables from the
various Study Groups, i.e Recommendations approved or
planned (before 1998, IP was a sub-project of the ITU-T GII
project)
o Y.1000 to Y.9999 reserved for IP-related Recommendations.
o For each area, the IP Project identifies:
• scope and focus of the work area
• issues for consideration
• status of current work within ITU-T
• related work within IETF
o Edition 5: SG 13 meeting, 14-25 May 2001 (ITU-T Website)
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ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
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ITU-T IP Project
o Area 1 - Integrated architecture
o Area 2 - Impact to telecommunications access
infrastructures of access to IP applications
o Area 3 - Interworking between IP-based network and
switched-circuit networks, including wireless-based
networks
o Area 4 - Multimedia applications over IP
o Area 5 - Numbering and addressing
o Area 6 - Transport for IP-structured signals
o Area 7 - Signalling support, IN and routing for services on IP-
based networks
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ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
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ITU-T IP Project
o Area 8 - Performance
o Area 9 - Integrated management of telecom and IP-based
networks
o Area 10 - Security aspects
o Area 11 - Network capabilities including requirements for
resource management
o Area 12 - Operations and Maintenance (OAM) for IP
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ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
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ITU-T IP Project
4
IP Applications
Including Multi media - Q 3/13 and SG 10 and SG16
Signalling Support - SG 11
Service Interworking
Qs 2/13, 5/13
3
7
2
IP and
non-IP
Access Qs 12/13,
14/13,
SGs 15
and 16
Network Capabilities Qs 1, 2, and 3/13, SG 9
11
Interworking – Q5/13, SG16 and SSG
3
IP Performance - Q 6/13, SGs 2 and 12
8
IP Transport – Qs10/13, 16/13, SG 15
IP and
non-IP
Access Qs 12/13,
14/13,
SGs 15
and 16
2
6
Management - SG 4, 6/SSG, 4/15, 3/16
9
Naming, Numbering, Addressing and Routing - SG 2
5
1
Overall Network Architecture and Framework - Qs 1, 11, 14 and16/13
Operational Issues - SGs 2, 3, and 7
12
7
10
= Work area
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ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
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ITU-T IP Project
o Y.1001 (11/00) - IP Framework - A framework for convergence
o
o
o
o
o
o
of telecommunications network and IP network technologies
Y.1301/G.871 (10/00) - Framework for optical transport
network Recommendations
Y.1302/G.807 (07/01) - Requirements for Automatic Switched
Transport Networks (ASTN)
Y.1310 (03/00) - Transport of IP over ATM in public networks
Y.1322/G.707 (10/00) - Network node interface for the
synchronous digital hierarchy (SDH)
Y.1401 (10/00) - General requirements for interworking with
Internet protocol (IP)-based networks
Y.1501/I.351/Y.801 (10/00) - Relationships among ISDN,
Internet protocol, and GII performance Recommendations
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ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
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Access Network Transport
o
Q.1/15
• Access Network Transport Standardization
Plan, issue 4 (Feb. 2001)
• Access Network Transport Work Plan, issue
3 (Feb. 2001)
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ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
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The ANT standardization plan
Identifies
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o
Existing standards
o
Topics/standards under development
o
Lack of standards
o
Possible duplication and/or overlap
o
Market needs
o
Priorities
ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
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The ANT work plan
facilitates coordination/negotiation for
additional work on ANT (who, when, where,
etc.)
o provides overview of ongoing ANT activities
o revises ANT standardization plan as required
o monitors progress of ANT standards work
o
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ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
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ANT reference scenarios for
correlation of standards
The scenarios are intended to
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o
Facilitate identification of key reference
points in a scenario
o
Facilitate classification of interfaces
o
Facilitate identification of services that can
be carried across interfaces
o
Facilitate classification of services
o
Facilitate identification of end-points for
service delivery
ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
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ANT reference scenarios for
correlation of standards
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o
Facilitate investigation of interaction
between all components
o
Facilitate identification of access network
transport technologies
o
Be generic enough to facilitate scenario
development across all technologies and
Standards Development Organizations
(SDOs) areas
ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
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ANT, logical representation
Customer Premises
Network (CPN) XNI xxn
Access Network (AN)
Core Network
(CN)
SNIyn
Q
Wireless
Phone
XNI WI1
Phon e
Access
Network
[X]
SNIS1
L
SNIC1
Service
Function
XNICP1
Access
Unit
[X]
TV
PC
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Core
Network
XNICX1
Access
Network
[Y]
ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
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ANT, physical representation
Customer Premises
Network(s)
Access Network
Core Network
A
AI
Adaptor
Access Network
OPI
XNIxxn
CP
Network
NT
NIU
SNIyn
DI
Final Drop
Local Network
Local
Distribution
Core Network
NNI-A
NNI-B
Local
Switching
Backbone
Switching
OPI
OPI
XNIxxn
NNI-B
A
Key Interface
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ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
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ANT, components
Service Function: such as Video Server and
Video Service Provider for video services
o Core Network: such as Telecommunication
network, PSTN, N-ISDN, B-ISDN
o Access Network: such as CATV network,
ADSL/VDSL, fibre network, RITL, satellite
o CPN (Customer Premises Network): such as
Access Unit, TV, PC, Phone, Wireless Phone
o
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ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
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ANT, functions
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o
Multiplexing
o
Cross connecting, including grooming, on
demand connection and configuration
o
Management
o
Physical media adaptation
ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
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ANT, scenarios
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1)
Provision of Voice/Data/Video services over
existing infrastructure
2)
Provision of Voice/Data/Video services over
Cable Networks using B-ISDN
3)
The use of ADSL or VDSL to provide video
bandwidth (or BB services over copper pairs)
4)
Fibre Access scenario, Fibre In The Loop
5)
The use of Radio in the Local Loop
6)
Access using satellites
7)
Example of Internet access
ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
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ANT scenario 4, physical
representation
XNI
CP1,3
SNI
Phone
ONT
OLT
(NT)
TV
C5
Func .
Func .
DI
OP
PC
Fiber to the Home
Video
Server
XNI
XNI
CP1,3
CP2
SNI
Phone
NT
OLT
ONU
Func .
TV
Func.
PC
XNI
C6
CP2
DI
Public
Network
Func.
OP
Curb
Fiber to the Curb
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ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
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Working Methods
o Questions, Rapporteurs and editors
o Recommendations having regulatory or
policy implications (TAP procedure)
o Technical Recommendations (AAP procedure,
as per Rec. A.8)
o Correspondence (e-mail list and FTP area per
Question)
o Rapporteurs/editors meetings (approved at
WP/SGs level)
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ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
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Working Methods
o Working Parties/Study Groups meetings
(frequency, duration, location)
o Liaisons
o Workshops and seminars
o Cooperation with other SDO’s (A.4, A.5, A.6)
o Special Projects and new initiatives
• http://www.itu.int/ITU-T/info/participants_info.html
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ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
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Working Methods
1. Rules of Procedure of ITU-T meetings
2.
3.
4.
5.
6.
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(Resolution 1, Sec. 3; Rec. A.1, Sec. 1 & 2)
Study Group management (Rec. A.1, Sec.
1.3.2)
Submission of contributions (Rec. A.1 &
A.2)
How to reference other documents
Temporary documents (Rec. A.1, Sec. 3.3)
The roles of Rapporteurs (Rec. A.1, Sec.
2.3)
ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
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Collaboration
o Reasons for collaboration
• React to the rapid changes in the market needs
• Avoid duplication of effort or overlap
• Share (or develop collaborative actions to
support) the standardization effort
• Provide means for having «critical mass» of
experts in specific areas
• Saving costs
• Interdependence of telecom techniques &
applications with other industry sectors,etc.
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ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
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Collaboration
o Who is concerned?
• International Organizations (e.g. ISO, IEC)
• National and Regional Standards Development
Organizations (e.g. IEEE, ETSI, TTC)
• Forums and consortia (e.g. ATMF, FR Forum,
OMG)
o Levels of collaboration
• Communication process
• Referencing documents from other organizations
• Cooperation & exchange of information
• Collaboration with ISO/IEC on IT
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ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
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Collaboration
o Tools
• Rec. A.4, communication process
• Rec. A.5, referencing texts from other
organizations
• Rec. A.6, cooperation and exchange of
information with national & regional SDOs
• Res. 7 (WTSA-2000) & Rec. A.23, collaboration
with ISO and IEC on IT
• MoU on ICANN PSO (14 July 1999)
• MoU with ISO, IEC & UN/ECE on e-business (24
March 2000)
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ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
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Collaboration
• MoU with ETSI (14 June 2000)
o Key role of the Director of TSB, Responsible for ITU
Standardization Cooperation
• Management of processes under Recs. A.4, A.5 &
A.6
• Initiating and co-chairing joint meetings of IETF
Area Directors and ITU-T Study Group Chairmen
• Signatory of the PSO MoU (14 July 1999), the
MoU with ISO, IEC and UNECE on e-business (24
March 2000), etc.
o More information
• http://www.itu.int/ITU-T/tsb_director/index.html
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Thank you !!
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