ITU-T IP Related Studies Arshey Odedra TSB Engineer: [email protected] ITU-T TSB Engineer: [email protected] International Telecommunication Union.

ITU-T IP Related Studies

Arshey OdedraArshey Odedra

ITU-T TSB Engineer: [email protected] Engineer: [email protected]

International Telecommunication UnionInternational Telecommunication Union[ITU-T Seminar Botswana 24-26 July – 2002][ITU-T Seminar Botswana 24-26 July – 2002]

ITU-T IP Related Studies

• (1) ITU-T IP Project• (2) ) ITU-T SG11Signalling & IP activities

(3)IP Cable Communications • (4)IP-QoS/Performance • (5)IP-Optical Perfce • (6)Numbering• (7)IP and Security• (8)Multimedia (MM)

(1) The ITU-T IP Project

• ‘ITU-T IP Project’ Cover IP related ITU-T

work

• Project Doc Issue 4: SG13 Website

Scope of the Project

SG13 IP Work

• Y.1231 - IP Access Network Architecture

• Y.1310 - Transport of IP over ATM in public networks

• Y.1401 - General requirements for interworking with IP-based Networks

• Y.1241 - Support of IP-based services using IP transfer capabilities

SG13 IP work

• Y.17oam - OAM and protection switching for IP-based networks

• Y.1540 - IP packet transfer and availability performance parameters

• Y.1541 - IP performance objectives and allocations • Y.1311 - IP VPN • Y.1311.1 - IP VPN over MPLS

• Y.satip - Satellite IP networking architecture • Y.123qos - IP access quality of service

• Y.ipbypass - IP bypass in access networks

SG13 Future Plans

• SGs continue to build links with the IETF

• SG13 develop and manage the IP Project

(2) ITU-T SG11Signalling & IP activities

• SCOPE:• 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

• Lead Study Group for IN

ITU-T SG11 Current work focus:

• Interactions between IN and IP-based networks

• IP-related signalling protocols

• Bearer (ATM, IP) Independent Call Control (i.e. BICC)

• Signalling transport over IP

SS7 Convergence towards Packet based Networks

- Intelligent Network architecture and protocols enhanced

- For Call control signalling, Bearer Independent Call Control (BICC) protocols - over Packet based transport networks – BICC Recs approved (2000 & 2001).– BICC CS3 Recs approval target: 2003.

(3) IP Cable Communnications

• IPCablecom (SG9)

• Defines architecture and interface specs

interactive services over cable television network using IP

• Market driver: IP telephony

IPCablecom Service Possibilities

• Residential/ Business IP Telephony

• Video IP telephony

• Voice/data/video unified messaging

• Enhanced conferencing and media services

• Entertainment Services

Real-time multiplayer interactive gaming

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

IPCablecom Recs. for interoperability intra-zone and with PSTN

ArchitectureJ.160 Architecture

SignalingJ.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.

OSSJ.164 Event MessagingJ.166 MIB FrameworkJ.167 MTA ProvisioningJ.168 MTA MIBJ.169 NCS MIB

SecurityJ.170 (02/02) Security

A set of recommendations approved (2001/2002)

IPCablecom Recs. for interoperability inter-zone and inter-domain directly over

managed IP backbones

Quality of ServiceJ.174 (02/02)Inter-domain QoS

Security

J.170 (02/02) Security

ArchitectureFor further study

SignalingFor further study

OSSJ.164 (03/01) Event

Messaging

(4)IP-QoS/Performance

•QoS Classes : Basis for IP Network QoS Control

•IP QoS control: IP/PSTN network convergence

•Y.1541(05/2002)

•Y.1540=I.380

QoS signaling protocols Y.1541

Some Discussion topics on IP Network QoS Control

• Harmonised IP QoS signaling

• Interworking IP QoS mechanisms

(5) IP-Optical Network & Performance Aspects

• IP-Optical Networks: Motivation

- Infrastructure Attributes

- Capabilities

- Operational Benefits

IP/Optical Networks:Performance Benefits & Challenges

• Performance Benefits– Increased transmission capacity

– Reduced packet transfer delay, delay variation, loss, error

– Lower call set up delays and blocking probabilities

– Improved service availability

• Some Challenges– Specify interoperable performance signaling protocols

– Relate IP user/client requirements with control mechanisms

– Define compatible network management strategies

IPPM and Question 6/13

• New RFCs – Loss Patterns

– Bulk Transfer Capacity

• Current (IETF) Drafts – Packet Reordering

– Active Meas. Protocol Req.

– IPPM MIB

• New Work on– Link Bandwidth Capacity

• Performance Objectives– Y.1541 (May 2002), six

QoS Classes

• Suggest QoS Signaling Support/Methods

• Parameter Revisions– Y.1540 (Nov 2002)

• “other” Packet Transfer – MPLS?

(6) Numbering

• 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: (target E.A-ENUM, Dec. 2002?)

(7)IP and Security

Directory Access Control with X.509 Attribute Certificates:

• The user given Attribute Certificate (AC) which strongly binds his/her name to the privileges being given to him/her

• The AC is signed by the Attribute Authority (Resource Owner or his delegate)

• Similar to X.509v3 certificate, only holds a sequence of attributes rather than a public key

• An attribute certificate can be stored anywhere since it is secure and self contained

Standardisation Work ofQ.9/17

• Friends attributes in X.501, X.511• Distributed page results service in X.518• Related Entries in X.501, X.511, X.518• Alignment with IETF standards• Defect reports in entire X.500-series

SSG Role on Security

• Q.3/SSG Identification of existing and evolving IMT-2000 Systems– Q.1741 3GPP security specifications

• Q.1/SSG Service and network capability requirements andnetwork architecture

• & Q.7/SSG Convergence of fixed and existing IMT-2000 systems

Study Group 16 - Security-relatedQs 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

Q.G/16 Work and Study ItemsSome Highlights

• Investigate confidentiality and privacy of all signaling

• Address centralized key management for MM systems

• Security for MM Mobility• Optimize voice encryption, develop video

encryption• MM security support for emergency services• Consolidate or develope new security profiles• Security interworking H.323-SIP

Emergency Telecoms Services (ETS) Security for MM Applications and Systems• 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

• H.SETS : provisional title for a new work item under study in Q.G/16 - focus on the multimedia security aspects of ETS

(8)Multimedia (MM)

ITU-T Study Group 16 Project: MediaCom 2004

Objective:

• 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

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

• Project MediaCom 2004Project MediaCom 2004 (A/16)(A/16)

• MM Architecture (B/16)• MM Applications and Services (C/16)• Interoperability of MM Systems and Services (D/16)• Media Coding (E/16) • QoS & E-to-E performance in MM Systems (F/16) • Security of MM Systems and Services (G/16) • Accessibility (H/16)

Framework Study Areas (FSA)Framework Study Areas (FSA)

F.MDS

Se

rvice D

escriptio

nsT

echn

ical D

escrip

tions

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.728

G.723G.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 InterdependenceU

ser

pers

pect

ive

Equ

ipm

ent/

prot

ocol

per

spec

tive

33THANK YOU

GENEVA