Overview of Multiservice Switching Forum (MSF) Technical Activities and Direction

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Overview of Multiservice Switching Forum (MSF)

Technical Activities and Direction

Overview of Multiservice Switching Forum (MSF)

Technical Activities and Direction

Dave McDysan, WorldComTechnical Committee ChairDave McDysan, WorldComTechnical Committee Chair

2Comnet 2001 Tutorial

Switch Control WGSimon Crosby

Cplane

MSF OrganizationMSF Organization

MEGACOBrian Rosen

Marconi

Board of Directors11 People

Technical CommitteeDave McDysan

WorldCom

Marketing Awareness CommitteeCarol Waller

Marconi

Liaison CommitteeLarry Gabuzda

Lucent

Media Control WGPetros Mouchtaris

Telcordia

Architecture WGMark Klerer

Nortel

Interoperability WGOpen

Management Framework WGAvri Doria

Nortel

GSMPOpen


MSF Technical Committee CharterMSF Technical Committee Charter

• Overall system and life-cycle view– Requirements, architecture, protocol specification, implementation details, facilitate interoperation

• Leverage other standards bodies and activities wherever possible

• Liaison with other standards bodies to communicate requirements, define protocols, co-sponsor events


1999 Accomplishments1999 Accomplishments

• Media Gateway control requirements input to IETF/ITU-T MEGACO/H.248

• Based switch control on IETF GSMP• Adopted concept of switch partitioning• Completed Straw Ballot of Release 1

Architecture Document• Established Interoperability Working

Group


2000 Accomplishments2000 Accomplishments

• Completed Final Ballot of Release 1 Architecture Document

• Final Ballot for Switch Control (GSMP)• Co-hosted First MEGACO/H.248

Interoperability Event in August at UNH• Established Management Framework

Working Group• Drafted Implementation Agreements for

MEGACO/H.248


Overall 2001 ObjectivesOverall 2001 Objectives

• Release 2 Incremental Architecture Documents

– Application/ Management Plane– Extensions in support of Mobility– Extensions to support IP, MPLS

• Media Control Implementation Agreements– MEGACO Profiles (Access, Trunking, Residential)– MEGACO Package (CAS)– MGC-MGC Protocols (BICC, SIP-T)


Overall 2001 ObjectivesOverall 2001 Objectives

• At least two Media Control Interoperability Events

• Switch Partitioning Documents– MIB, Requirements

• Technical Reports • Vendor White Papers• Liaisons to IETF, ITU, ISC, Others


Architecture CharterArchitecture Charter

• Define overall terminology and framework for the MSF, building upon Release 1 architecture document

• Release 2– IP Support– MPLS Support– Mobility Support– Application Plane Architecture– Statistical Switch Partitioning (if possible)


...AdaptationPlane

SwitchingPlane

ExternalInterfaces/Protocols

Man

ag

emen

t P

lan

e

Standard Physical and Logical Interfaces

TCP/IP Video ATM

Multiservice

...Control

Plane

Voice

ApplicationPlane

Standard IN/Signaling APIs, Interfaces, and Protocols

IP/MPLSController

Voice/SS7Controller

ATM/SVCController

TDM FR

Switching Fabric (any switching principle)

Logical MSF ArchitectureLogical MSF Architecture


Release 2 Document StructureRelease 2 Document Structure

• Architectural Framework– Definitions, objectives, document structure,

• Functional Architectural Framework– Separate document for IP, MPLS, Mobility, Application plane, etc.

• Physical Architectural Mapping • Network Mapping w/ reference

protocols • Service Example Call Flows


Architecture WG ScheduleArchitecture WG Schedule

• Application Plane Functional Framework

– Straw Ballot 9/01– Final Ballot 12/01

• Mobility Functional Framework– Straw Ballot 9/01– Final Ballot 12/01

• IP/MPLS Functional Framework– Straw Ballot 9/01– Final Ballot 12/01


Media Control Working Group CharterMedia Control Working Group Charter

• MG-MG Interface– Media Gateway Control (MEGACO)/ H.248 Jointly developed by IETF & ITU-T

• MGC-MGC Interface– Session Initiation Protocol (SIP) or Bearer Independent Call Control (BICC)

• MGC-Telephony Interfaces– SS7, ISDN, Channel Associated Signaling (CAS), etc.


Media Control Functions and InterfacesMedia Control Functions and Interfaces

IP or ATMNetwork

ResidentialGateway

AccessGateway

TrunkingGateway

TrunkingGateway

Media GatewayController (MGC)

Media GatewayController (MGC)

PBX

PSTN

SIP-T, BICC, H.225

PSTN

Media (VoIP, VoATM, TDM)

Signaling

MEGACO/H.248

SS7, ISUP

SS7, ISUP

POTS, BRA,SIP, H.323

ISDN,CAS

MEGACO/H.248

14Comnet 2001 Tutorial• 14

• MEGACO/H.248– MEGACO/H.248 Profile for Access Gateway/MGC – MEGACO/H.248 Profile for Trunking Gateway/MGC– MEGACO/H.248 Profile for Residential Gateway/MGC– CAS package (new work item)

• ia reference point– SIP-T– BICC

• Legal Intercept (new work item)• Management Interface for MGC and MG (inviting

contributions) – To be done in conjunction with management framework working group

Detailed Media Control Charter


• MEGACO/H.248 Work Items• CAS Package (Added as a new work item)

– Draft 2/01– Straw ballot 5/01– Final ballot 8/01

• Two implementation agreements currently under development for MEGACO/H.248– MEGACO/H.248 Profile for Access Gateway/MGC – MEGACO/H.248 Profile for Trunking Gateway/MGC

• Draft implementation Agreements available now– Straw ballot 5/01– Final ballot 8/01

• MEGACO/H.248 Profile for Residential Gateway/MGC– TBD

Media Control Schedule


• ia reference point • BICC

–BICC outline for implementation agreement (8/00)–Draft BICC Implementation Agreement (2/01)–Straw ballot BICC Implementation Agreement (5/01)–Final ballot BICC Implementation Agreement (8/01)

• SIP-T–Draft SIP-T Implementation Agreement (11/00)–Straw ballot SIP-T Implementation Agreement (5/01)–Final ballot SIP-T Implementation Agreement (8/01)

Media Control Schedule (cont.)


• Legal Intercept–New work item. –Invite contributions–Dates TBD until next meeting

• Management Interface for MGC and MG (inviting contributions)

–No progress to date.–Can the management group take it over?

Media Control Schedule (cont.)


Switch Control CharterSwitch Control Charter

• General Switch Management Protocol (GSMP)– Specified jointly by MSF and IETF– Supports ATM, FR, MPLS connection establishment, termination, and status checking– Also provides means to configure interworking, where applicable–Circuit Emulation a planned future work item

• Future scope/charter TBD– Optical switching?– Distributed router?


Switch Control Protocols and InterfacesSwitch Control Protocols and Interfaces

SwitchController

Physical Switch

LogicalPartitions

FR, ATM,MPLS,CES

Switch PartitionManagement

Interface

SwitchController

SwitchController

SwitchController

Multiservice Switch

FR, ATM,MPLS,CES

General SwitchManagement Protocol

(GSMP)


Switch Control ScheduleSwitch Control Schedule

• Straw Ballot GSMP (without CES)– Approved 1/01

• Final Ballot GSMP (with CES)– February, 2001

• CES additions to GSMP – TBD?Issue: No MSF contributions or member support for this effort. No effort in IETF either.


Management Framework CharterManagement Framework Charter

• Management for Media and Switch Control Components

• Initial Focus on MIB for Partition Management of GSMP-Controlled Switch

• Next Major Efforts – Partition Management of a MEGACO Controlled Media Gateway– Partitioning of Virtual Routers


Switch Partition ManagementSwitch Partition Management

Switch Partitioning Function

Switch PartitioningManagement

Interface

Logical Switch Partitions

Multiservice Switch

Switch Control Interface (SCI)


Management Framework ScheduleManagement Framework Schedule

• Partitioning MIB– Straw Ballot – 6/01– Final Ballot – 9/01

• General Partitioning Framework– Straw Ballot –9/01– Final Ballot – 12/01

• MIB/PIB for MG & MGC management– TBD

• MIB/PIB for partitioned MG (w/ Media Control)– TBD

• MIB/PIB for partitioning Router– TBD


InteroperabilityInteroperability

• Three stage of interoperability testing– 1. Non-published Early Development Testing

Objective is clarifying interpretations of protocol specifications as related to overall MSS requirements

– 2. Public Bake Off against MSF IAs Overall system integration configuration

– 3. Conformance/Compliance TestingMSF “Stamp of Approval” To Be

Determined


2001 Interoperability Plans2001 Interoperability Plans

• MEGACO/H.248 Interoperability Event co-sponsored with ISC 8/2000 at UNH

• Next MEGACO/H.248 Interoperability Event targeted for Jan/Feb 2001

• Plan to Sponsor MGC-MGC Interoperability Events

• Plan to Sponsor GSMP Interoperability Events