© 1997 CableLabs® Proprietary and Confidential PacketCable Project Terry D. Shaw, Ph. D....
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Transcript of © 1997 CableLabs® Proprietary and Confidential PacketCable Project Terry D. Shaw, Ph. D....
© 1997 CableLabs® Proprietary and Confidential
PacketCable Project PacketCable Project
Terry D. Shaw, Ph. D.Terry D. Shaw, Ph. D.
CableLabsCableLabs
303-661-3811303-661-3811
[email protected]@cablelabs.com
© 1997 CableLabs® Proprietary and Confidential
OverviewOverview
Service conceptService concept Project structure and timeline Project structure and timeline Interoperability TestingInteroperability Testing
© 1997 CableLabs® Proprietary and Confidential
Characteristics of Cable’s High-Speed Data ServiceCharacteristics of Cable’s High-Speed Data Service Always on / Always connectedAlways on / Always connected Speed scales depending upon needSpeed scales depending upon need
High speedHigh speed >> e.g. Internet Accesse.g. Internet Access Low speed Low speed >> e.g. Telemetrye.g. Telemetry Medium speedMedium speed >> e.g. Telephonye.g. Telephony
Streaming / Isochronous more difficultStreaming / Isochronous more difficult
© 1997 CableLabs® Proprietary and Confidential
Integrated Services NetworkIntegrated Services Network
DATA
Video Control
DATA
VIDEO•Analog & Digital Broadcast•Video on Demand•Other
Downstream
Upstream
© 1997 CableLabs® Proprietary and Confidential
Service ConceptService Concept
Voice TelephonyVoice Telephony LocalLocal LEC BypassLEC Bypass Long DistanceLong Distance
Video TelephonyVideo Telephony Other Services Other Services
Over “Telco Over “Telco Circuit”Circuit”
PBX ExtensionPBX Extension Fax PLUSFax PLUS
Initial Services: Subsequent:
© 1997 CableLabs® Proprietary and Confidential
Network ArchitectureNetwork Architecture
PBX
InternetPSTN
CableLabsNode
MSO 2Node
MSO 5Node
MSO 4Node
MSO 1Node
MSO 6Node
MSO 7Node
Cable Intranet
MSO 3Node
© 1997 CableLabs® Proprietary and Confidential
PacketCable™ Concept PacketCable™ Concept
Packet-based Packet-based applications running applications running over nationwide mesh over nationwide mesh of cable and of cable and backbone IP networksbackbone IP networks
Hop off data network Hop off data network to PSTN only as last to PSTN only as last resortresort
© 1997 CableLabs® Proprietary and Confidential
PacketCable™ Concept (cont’d) PacketCable™ Concept (cont’d)
Specification effortSpecification effortfocuses on applicationsfocuses on applicationslayer software and layer software and hardware componentshardware components
PhysicalPhysical
TransportTransport
NetworkNetwork
ApplicationsApplications
© 1997 CableLabs® Proprietary and Confidential
Project ObjectivesProject Objectives
Develop overlay packet network for cable Develop overlay packet network for cable systems systems Support broad family of servicesSupport broad family of services
Open, interoperable standards for North Open, interoperable standards for North American cable marketAmerican cable market
Initial focus on IP telephony and videoInitial focus on IP telephony and video Described in Product Definition StatementDescribed in Product Definition Statement
© 1997 CableLabs® Proprietary and Confidential
Project OverviewProject Overview
Four focused areas of effortFour focused areas of effort Product definitionProduct definition Technical specification/reference architectureTechnical specification/reference architecture Product testingProduct testing Information sharingInformation sharing
© 1997 CableLabs® Proprietary and Confidential
Product Specification Working Group ObjectivesProduct Specification Working Group Objectives Translate product definition statement into Translate product definition statement into
functional/technical requirementsfunctional/technical requirements Develop reference architecture/technical Develop reference architecture/technical
specification necessary for implementationspecification necessary for implementation Identify timeline for phased approach Identify timeline for phased approach
Communicate functional requirements of Communicate functional requirements of industry to vendor communityindustry to vendor community
Build on existing standardsBuild on existing standards
© 1997 CableLabs® Proprietary and Confidential
Product EvaluationProduct Evaluation
Goal: Laboratory testing of IP productsGoal: Laboratory testing of IP products Performance across cable systemsPerformance across cable systems Technology validationTechnology validation Identify and specify key quality parametersIdentify and specify key quality parameters InteroperabilityInteroperability
Timeline:Timeline: Experiential: November 1997 - June 1998Experiential: November 1997 - June 1998 Interoperability: March 1998 - December 1998Interoperability: March 1998 - December 1998
© 1997 CableLabs® Proprietary and Confidential
Fast-Track Performance ValidationFast-Track Performance Validation Basic system operations: “Does it work?”Basic system operations: “Does it work?” Validation of protocol interoperabilityValidation of protocol interoperability Test key parameters under stressed Test key parameters under stressed
conditionsconditions Traffic loading and latency issuesTraffic loading and latency issues Network integrityNetwork integrity Quality of Service (QoS)Quality of Service (QoS)
© 1997 CableLabs® Proprietary and Confidential
PSTNCable
Intranet
Internet
HEADENDLANGW
GK
H.323Terminal
H.323Terminal
CMTSGW
HFC Network
HEADENDLAN
GW
GWCMTS
GK
HFCNetwork
PSTN
Vendor Evaluation Test SetupVendor Evaluation Test Setup
© 1997 CableLabs® Proprietary and Confidential
www.packetcable.comwww.packetcable.com