international telecommunication union itu seminar on standardization accra, ghana, 27-28 may 2004...
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International Telecommunication Union
ITU Seminar on Standardization Accra, Ghana, 27-28 May 2004
ITU activities related to ITU activities related to
IP-based networksIP-based networks
Greg JonesITU Telecommunication Standardization Sector
(ITU-T)
227-28 May 2004
ITU-T IP Related Studies
1. ITU-T IP Project2. ITU-T SG11 Signalling & IP activities3. IP Cable Communications4. IP-QoS/Performance 5. IP-Optical Network & Performance
Aspects6. Numbering7. IP and Security8. Multimedia (MM)
327-28 May 2004
ITU-T’s IP Project
o Covers IP related ITU-T work
o IP Project Description version 8
• see ITU-T Study Group 13 website
• itu.int/ITU-T/studygroups/com13
427-28 May 2004
IP project areas1. Integrated architecture2. Impact to telecommunications access
infrastructures of access to IP applications3. Interworking between IP based network and
switched-circuit networks, including wireless based networks
4. Multimedia applications over IP5. Numbering and addressing6. Transport for IP-structured signals7. Signalling support, IN and routing for services on
IP-based networks8. Performance9. Integrated management of telecom and IP-based
networks10. Security aspects11. Network capabilities including requirements for
resource management12. Operations and Maintenance (OAM) for IP13. Utilization of IPv6 in telecommunication networks
527-28 May 2004
Scope of the IP Project
Management - SG 4, 6/ SSG, 14/ 15, 3/ 16
Naming, Numbering, Addressing and Routing - SG 2
Overall Network Architecture and Framework - Qs 1, 11, 14 and16/ 13
IP andnon-IP
Access -Qs 12/ 13,
14/ 13,SGs 4, 15 and 16
IP andnon-IP
Access -Qs 12/ 13,
14/ 13,SGs 4, 15and 16
IP Transport –Qs10/ 13, 16/ 13, SG 15
IP Performance - Q 6/ 13, SGs 2, 4 and 12
Interworking –Q5/ 13, SG16 and SSG
Network Capabilities Qs 1, 2, and 3/ 13, SG 9
Signalling Support - SG 11
IP ApplicationsIncluding Multi media - Q 3/ 13 and SG 10 and SG16
Service InterworkingQs 2/ 13, 5/ 13
3
1
5
9
6
8
3
11
72
2
4
= Work area
7
12 10Operational Issues - SGs 2, 3, 4 and 17
13
627-28 May 2004
SG13 IP Work
o Y.1231 - IP Access Network Architecture
o Y.1310 - Transport of IP over ATM in public networks
o Y.1401 - General requirements for interworking with IP-based Networks
o Y.1241 - Support of IP-based services using IP transfer capabilities
27-28 May 2004
SG13 IP work
o Y.1710 - Requirements for OAM functionality for MPLS networks
o Y.1540 - IP packet transfer and availability performance parameters
o Y.1541 - IP performance objectives and allocations
o Y.1311 - IP VPN o Y.1311.1 - IP VPN over MPLS
o Y.satIP - Satellite IP networking (arch, mcst, QoS)
o Y.123.qos - IP access quality of service
o Y.ipbypass - IP bypass in access networks
27-28 May 2004
SG13 Future
o Study groups continue to build links with the IETF
o Develop and manage the IP Project
o Work programmesee itu.int/ITU-T/dbase
927-28 May 2004
(2) ITU-T Study Group 11Signalling & IP activitieso Defines Signalling requirements and
protocols for:• enhancements to existing
Recommendations on access (UNI) and (inter)-network (NNI) signalling protocols for PSTN, ISDN and Packet (ATM and IP)-based networks
• Some Mobility & MM related functions• the support of voice, data and Multi-media
communications and services• emerging NGN architectures,
signalling requirements, and control Protocols including Internet Protocol (IP) related control functions
o Lead Study Group for IN
1027-28 May 2004
ITU-T SG11 work focus
o Interactions between IN and IP-based networks
o IP-related signalling protocolso Bearer (ATM, IP) Independent Call
Control (i.e. BICC)o Signalling transport over IP
1127-28 May 2004
SS7 Convergence towards Packet based Networks
o Intelligent Network architecture and protocols enhance
o For Call control signalling, Bearer Independent Call Control (BICC) protocols - over Packet based transport networks • BICC Recs approved (2000 &
2001).• BICC CS3 under development
1227-28 May 2004
(3) IP Cable Communications
IPCablecom (SG9)o Defines architecture and interface
specs interactive services over
cable television network using IP
o Market driver: IP telephony
1327-28 May 2004
IPCablecom Service Possibilities
o Residential/ Business IP Telephonyo Video IP telephonyo Voice/data/video unified messagingo Enhanced conferencing and media
serviceso Entertainment Services
• Real-time multiplayer interactive gaming
1427-28 May 2004
AN Access NodeCM Cable ModemCMS Call Management ServersHFC Hybrid Fiber Coax networkMTA Multimedia Terminal AdapterPSTN Public Switched Tel. Network
Embedded MTA
IPCablecom Components
PSTN
PSTNGateway
CMS
CMMTA
Back OfficeServers
Managed IPNetwork
AN
CM
HFC
1527-28 May 2004
IPCablecom Recs. for interoperability intra-zone
and with PSTN
ArchitectureJ.160 Architecture
SignallingJ.162 Network Call SignallingJ.165 IPCablecom Signalling Transport ProtocolJ.171 Trunk Gateway Control Protocol
Quality of ServiceJ.163 Dynamic QoS
Media/CodecsJ.161 Audio Codec
Requirements.OSS
J.164 Event Messaging
J.166 MIB Framework
J.167 MTA Provisioning
J.168 MTA MIBJ.169 NCS MIB
SecurityJ.170 (02/02)
Security
A set of recommendations in 2001/2002
1627-28 May 2004
IPCablecom Recs. for interoperability inter-zone and inter-domain directly
over managed IP backbones
Quality of ServiceJ.174 Inter-domain
QoS
SecurityJ.170 Security
ArchitectureFor further study
SignallingFor further study
OSSJ.164 Event
Messaging
1727-28 May 2004
(4) IP-QoS/Performance
o QoS Classes• Basis for IP Network QoS Control
o IP QoS control• IP/PSTN network convergence
o Y.1541• Network performance objectives for IP-
based serviceso Y.1540=I.380
• Internet protocol data communication service - IP packet transfer and availability performance parameters
o QoS signalling protocols Y.1541
1827-28 May 2004
Max Packet Loss, Max Mean Delay, Max Delay Variation TRANSPORT
APPLICATIONCodec Performance, VAD, Frames per Packet, Jitter Buffer Size, Codec Delay, FEC (Redundancy)
QoS Parameters
ITU-T SG16/11
ITU-T SG13/IETF
SERVICEUser Perceived QoS
ITU-T SG12/16
1927-28 May 2004
Some Discussion topics on IP Network QoS Control
o Harmonized IP QoS signallingo Interworking IP QoS mechanisms
2027-28 May 2004
(5) IP-Optical Network & Performance Aspects
o IP-Optical Networks: Motivation
• Infrastructure Attributes
• Capabilities
• Operational Benefits
2127-28 May 2004
IP/Optical - Performance Benefits & Challenges
o Performance Benefits• Increased transmission capacity• Reduced packet transfer delay, delay
variation, loss, error• Lower call set up delays and blocking
probabilities• Improved service availability
o Some Challenges• Specify interoperable performance
signalling protocols• Relate IP user/client requirements with
control mechanisms• Define compatible network
management strategies
2227-28 May 2004
IPPM and Question 6/13
o New RFCs • Loss Patterns• Bulk Transfer
Capacityo Current (IETF)
Drafts • Packet
Reordering• Active Meas.
Protocol Req.• IPPM MIB
o New Work• Link Bandwidth
Capacity
o Performance Objectives• Y.1541 (May
2002), six QoS Classes
o Suggest QoS Signaling Support/Methods
o Parameter Revisions• Y.1540 (Nov
2002)o “other” Packet
Transfer • MPLS?
2327-28 May 2004
(6) Numbering
o ENUM Significance: - Mapping telephone numbers onto Internet.- Could allow conventional telephones to call IP terminals (PCs).- ITU Responsibility: Define and implement administrative procedures that coordinate delegations of E.164 numbering resources into the agreed DNS name servers- Draft Recommendation E.A-ENUM is being
prepared by Study Group 2
2427-28 May 2004
(7)IP and Security
Directory Access Control with X.509 Attribute Certificates:
o The user given Attribute Certificate (AC) which strongly binds his/her name to the privileges being given to him/her
o The AC is signed by the Attribute Authority (Resource Owner or his delegate)
o Similar to X.509v3 certificate, only holds a sequence of attributes rather than a public key
o An attribute certificate can be stored anywhere since it is secure and self contained
2527-28 May 2004
Standardisation Work ofQ. 9/17
o Friends attributes in X.501, X.511o Distributed page results service in
X.518o Related Entries in X.501, X.511,
X.518o Alignment with IETF standardso Defect reports for entire X.500-series
2627-28 May 2004
ITU-T Special Study Group IMT-2000 and Beyond
o Q.3/SSG Identification of existing and evolving IMT-2000 Systems• Q.1741 3GPP security specifications
o Q.1/SSG Service and network capability requirements and network architecture
o & Q.7/SSG Convergence of fixed and existing IMT-2000 systems
2727-28 May 2004
Study Group 16Security-related Questions in the
MediaCom2004 project
Q.C/16 - MM Applications & Services F.706
Q.D/16 - Interoperability of MM Systems & Services
Q.G/16 - Security of MM Systems & Services H.233, H.234, H.235
Q.1/16
MM Systems, Terminals &
Data Conferencing
H.320
H.324
T.120
Q.2/16
MM over Packet
Networks using H.323
systems
H.225.0
H.323
H.450
H.460
Q.3/16
Infrastructure &
Interoperability for MM over
Packet Network Systems
H.245
H.246
H.248
Q.4/16
Video and Data
conferencing using
Internet supported Services
Q.5/16Mobility for MM
Systems &
Services
H.501
H.510
H.530
Q.F/16 - MM Quality of Service & E-2-E Performance in MM Systems
2827-28 May 2004
Q.G/16 Work and Study Items Highlights
o Investigate confidentiality and privacy of all signaling
o Address centralized key management for MM systems
o Security for MM Mobilityo Optimize voice encryption, develop video
encryptiono MM security support for emergency
serviceso Consolidate or develop new security
profileso Security interworking H.323-SIP
2927-28 May 2004
Emergency Telecommunication Services (ETS) Security for MM
Applications and Systems
o Security objectives:• prevent theft of service and denial of
service by unauthorized user• support access control and
authorization of ETS users• confidentiality and integrity of calls• provide rapid and user-friendly
authentication of ETS users
o H.SETS : provisional title for a new work item under study in Q.G/16 - focus on the multimedia security aspects of ETS
3027-28 May 2004
(8)Multimedia (MM)
ITU-T Study Group 16 MediaCom 2004 objective
o to create a framework for the harmonized and coordinated development of multimedia communication standardization for use across all ITU-T and ITU-R Study Groups, and in close cooperation with other regional and international SDOs and industry forums
3127-28 May 2004
MEDIACOM 2004 Framework in SG16
MEDIACOM 2004 (Q A/16)
Generic Questions B/16 to H/16
Framework Standardisation Areas (FSA)
Equipment and system questions
1/16 to 15/16
FSA Framework Study AreasFSA Framework Study Areas
3227-28 May 2004
o Project MediaCom 2004 (A/16)o MM Architecture (B/16)o MM Applications and Services (C/16)o Interoperability of MM Systems and
Services (D/16)o Media Coding (E/16) o QoS & E-E performance in MM
Systems (F/16) o Security of MM Systems and
Services (G/16)
o Accessibility (H/16)
Framework Study Areas (FSA)
3327-28 May 2004
F.MDS
Service D
escriptionsTechnical D
escriptions
T.130
H.263
H.262H.261
H.243
H.231
H.320
H.242
H.230
H.221
Q.931
ISDN
ISDN
F.MCS.1 = F.731
F.MCV.1
F.MRS.1
F.MDS.1
N. A.
H.324
H.245
H.223
Q.23
PSTN
PSTN
F.MCS.3
F.MCV.3
F.MRS.3
F.MDS.3
N. A.
H.324
H.245
H.223
F.MCS.4
F.MCV.4
F.MRS.4
F.MDS.4
Q.---
Mobiles
Mobiles
Terminals or End-points
Multipoint
In-band Signalling
Multiplex
Call Control
B-ISDN
B-ISDN
H.247
H.321
H.310
H.245
H.222.1
H.222.0
Q.2931
F.MCS.2 = F.732
F.MCV.2
F.MRS.2
F.MDS.2
Network Independent Recommendations Network Specific Recommendations
Video CodingAudio CodingProtocols
G.729
G.728G.723
G.722
Communication Capabilities :
F.700Service Description Process
F.MRS
F.MCVS
F.MCS = F.702
Generic Multimedia Services
H.332
H.323
H.245
H.225.0
Packets
Packets
F.MCS.5
F.MCV.5
F.MRS.5
F.MDS.5
G.711
Media Comp.
Comm. Tasks
MSEs
MSEs = middleware service elements
T.120
H.248
MM Element Interdependence
Use
r pe
rspe
ctiv
eE
quip
men
t/pr
otoc
ol p
ersp
ecti
ve
3427-28 May 2004
Other IP related resources
o IP Policy Manualsee itu.int/ITU-T/special-projects/ip-policy
o PP-02 Resolution 102o ITU-T Workshops
see itu.int/ITU-T/worksem
o ITU-T and ICANN reformsee itu.int/ITU-T/tsb-director/itut-icann