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ITU-T Study Group 7 Herbert V. Bertine Lucent Technologies ITU-T Study Group 7 Data Networks and Open System Communications

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ITU-T Study Group 7

Herbert V. Bertine

Lucent Technologies


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ITU-T Study Group 7Data Networks andOpen System Communications

  • Responsible for studies relating to data communication networks, and for studies relating to the application of open system communications including networking, directory and security

  • Lead Study Group on:

    • Frame relay

    • Communication system security

ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001


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Study Group 7

  • Responsible for 278 ITU-T Recommendations - most of the X-series plus a few in E, F, and Q series

    • Several on the ITU “top 20” list - X.25, X.509, ASN.1, …

  • Study Group structure:

    • WP1 Data Networks

    • WP2 Open Systems Technology

    • WP3 E-commerce/E-business

ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001


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Relations

ISO/IEC

JTC 1

IETF

STUDY GROUP

7

IEEE

UN/ECE

FRAMERELAY

FORUM

OTHER STUDY GROUPS

OTHER

FORUMS

ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001


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Public Data Networks

  • Dedicated Data Networks

    • Digital Data Networks – leased circuits and circuit switched

    • Packet Data Networks

    • Frame Relay Networks

  • Service Definition

  • Numbering and Routing

  • Network Performance and QoS

  • User-Network and Network-Network Interfaces

  • Access and Interworking Procedures

ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001


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Open Communications

  • IP-related Lower Layer Protocols

  • End-to-end QoS Multicast Communications

  • Directory (X.500-series)

  • ASN.1 (X.680/X.690-series)

  • Security

  • Conformance Testing

  • Open Systems Interconnection

  • Open Distributed Processing

ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001


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Frame Relay

  • UNI and NNI protocols mature

  • Performance parameters in place

  • Examples of ongoing work:

    • number plan interworking of public data networks with IP networks

    • performance when IP is carried over or interworked with a FR network

    • routing between public FR networks

    • FR / ATM interworking

ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001


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IP-related Lower Layer Protocols and Mechanisms

  • IP over SDH using LAPS (X.85)

  • Ethernet over LAPS (X.86)

  • General arrangements for interworking between Public Data Networks and the Internet (X.271)

  • Carrying an IP address (IPv4, IPv6) in an NSAP address (X.213)

ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001


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End-to-End QoS Multicast

  • Recommendationsto enable applications to establish and control multicast communications involving M transmitters and N receivers with a rich set of QoS features over IP-based networks

  • Approved: Multi-peer communications framework (X.601), Service definition (X.605)

  • Near final: Simplex multicast transport

  • Future: Duplex, N-plex

ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001


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Directory

  • Updated edition (X.500-series)

  • Public-key and attribute certificate frameworks (X.509)

  • Enhancements in progress:

    • Friend Attribute

    • Distributed Paged Results

    • Maximizing alignment with LDAP

    • Additional support for Related Entries

    • Enhancement of public key and attribute certificates

ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001


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ASN.1

  • Work nearing completion:

    • Use of ASN.1 to support legacy protocols (X.692)

    • Displaying ASN.1 messages using XML browsers (X.693)

    • Encoding XML-defined messages using ASN.1 (X.694)

    • New edition of ASN.1 (X.680-/X.690-)

  • Database of ASN.1 modules

  • ASN.1 assistance, books, tools

ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001


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Security

  • Recommendations on security model, frameworks, protocols, and techniques approved 1991-2000

  • Revisiting future work program

  • Considering workshop on security in 2002

ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001


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Conformance Testing

  • Conformance testing methodology and framework for protocol Recommendations (X.290-series)

  • New work:

    • Methodology and framework for interoperability testing

    • Methodology and framework for performance testing

ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001


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Further Information

  • Study Group 7 meeting in Bangalore 28 August - 7 September 2001

  • ITU web site: www.itu.int

  • Study Group 7 page:

    www.itu.int/ITU-T/com7/index.html

  • Chairman: [email protected]

  • Secretariat: [email protected]

ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001


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