Scraddock 1

Comcast Proprietary9/23/2003 1

Feedback fromCable Operators

Steve CraddockSenior Vice President – New Media Development

Comcast Corp

Fall 2003 Voice on the NetBoston


PacketCable, VoIP and VON have come a long way since then ...

• Comcast early VoIP lab trials with IBM 7 years ago• PacketCable officially started 6 years ago this October• I attended my 1st VON 5 years ago (1998)• AT&T & Cox launched HFC Telephony 5 years ago• Comcast & TW launched 1st MSO VoIP Trials 4 Years Ago• PacketCable 1.0 Draft Spec Released 4 Years Ago• TW Launched 2nd VoIP Trial 2 Years Ago• Comcast Coatesville Trial 1 year ago • 1st PacketCable Certified/Qualified equipment 6 months ago• Some MSO’s are launching VoIP services commercially now


What does PacketCable do for Cable?1. Represents best VoIP standards modified for Cable2. Layer 3+ Standard to Define & Manage IP “Streams”3. Register Elements with DOCSIS 1.1 as “Trusted”4. Request and establish priority QoS in HSD IP network5. Increased Call “Flow” Session Security6. Standard Protocols to:

• Communicate to End Devices • Communicate With Boundary Gateways• Communicate Across Boundaries

7. Differentiate Service from 3rd party VoIP8. Positioned for Other IP Multimedia Services later


Classic PacketCable Architecture

CMTS

RKS FSANN

MGMGC

SGCMS

Billing AMA/EM

DOCSIS/Packetcable

•DQoS

•Security

•NCS

•Codecs

TDMTGCP

ISTP/TCAP

ISTP/TCAPUndefined

SIP SIP SIP

Line-Side

Trunk-Side

Switch Fabric

SS7 (ISUP/TCAP)

MTA

Access-Side Trunk-Side


So what’s taken VoIP so long… ?• Most VoIP Vendors grew out of non-access line Solutions

- PC-hobbyist solutions- Internet Offload solutions- Class 4 IP Tandems for CLECs- LD or International arbitrage for IXCs

• These weren’t suited for true Access-side Class 5 Replacement• After CLEC semi-implosion, Vendors “shopped” existing CLEC-

centric product hoping MSOs would give up on PacketCable• “Communications” vs “Data” DNA (“Zero Reboot” mentality)• Carrier-Class access Network Design• OSS/BSS changes that scale• Temptation to do “Telephony” (Duck) vs. PacketCable (Swan)• MSO’s having to deal with Circuit Switch business legacy issues


Comcast is in the Telephony Business

• CBR Telephony Offered in 18 Top US Markets- Serviceable Homes 8.9 M- Penetration 15.8%- ~1.4 M Subscribers w/average revenue of $52.29

• Priorities- Quality vs Quantity- Target valued customers- Stem churn

• Transition- Evaluate VoIP as growth engine for CBR- Evaluate VoIP as replacement for CBR


Possible Parallel MSO VoIP Scenarios

• Primary Line- Continue Roadmap to Deployment- Timing on Network Upgrades for reliability and PC 1.1- Look at alternatives for transitioning from CBR to VoIP

• Voice-Enhanced Data Services- Quicker hold the Market Strategy for MSOs- Non-primary line voice service sold only to HSD- Detailing Billing on Web – single line item- Self-Install .. Provisioned as modem- No CALEA, 911, IXC Choice, etc. guarantee at launch- Drives Quick Market for VoIP and PacketCable- Platform can be reused for Primary Line- Platform enables later PCMM services


The Road to VoIP Deployment• Comcast will concentrate first on optimizing ATT CBR

telephony Business it acquired• It’s the BSS/OSS Stupid …. scale, scale, scale• For VoIP, a need to develop and test other required switching

hierarchy configurations in these trials (eg, CMSS, IP Class 4Tandem)

• The Coatesville VoIP trial will be expanded to scale• Current Plan of record is to launch in 2 additional markets in

2004 • Primary Line VoIP will likely be a 2005 GA service • But ……

other lighter Voice-inclusive services could come sooner


Pushing the PCMM Architecture: Communications Convergence

Through IP Services


Logical Architecture - PacketCable Multimedia

Game Console

CMTS

GR-303NIU

eMTA

sMTA

DOCSISSet-Top

CMS

Video PhonePDA

PC ClientSIP

Proxy

SIMPLEIM/Presence

PolicyServer

UM

DNS/ENUMEM/Billing

HFC

VideoGateway

H.323Video

SIPPeering

VoiceGateway

PSTN

Comcast Regional Network


PCMM Additions to PacketCable• CMS

- SIP and SIMPLE Interfaces

• Policy Server- Application layer QoS requirements presented and translated into DOCSIS

QoS parameters – session flows established & released on demand - Resource allocation based on managed policy “pushed” from the network- Comcast maintains authoritative control through policy rules and

core network assets are protected by a robust security infrastructure

• SIP Proxy- Network element which directs and marshals endpoint-initiated SIP

messages to enforce MSO network policy and provide access to value-added features (QoS, CALEA, least-cost routing, SIP-based applications).

- Clients may be preconfigured and ‘hardened’ to point to the Comcast SIP infrastructure


PacketCable Multimedia Essentials

CMTS

eMTA

sMTA

CMS

SIPProxy

SIMPLEIM/Presence

PolicyServer

UM

DNS/ENUMEM/Billing

HFC

VideoGateway

H.323Video

SIPPeering

VoiceGateway

PSTN

Comcast Regional Network

NCS +SIP

PacketCable

Policy


Some Possible New PCMM Services• Voice-enhanced Data Services w/Presence

- Works anywhere IP connectivity can be obtained- Works around NAT- Interface with alternative end points (cellphones, PDAs, etc)- Presence-based communication services- sMTA allows “roaming” service over any broadband IP connection

• Video Telephony• Unified Messaging• Broadband Gaming, voice/video enhanced• “Free Trial” up-sell & tiered services (“Pushed” Policy)• IP Video

- PC Client- DOCSIS-equipped STB


Trial Roadmap


Vendors and Products for PCMM Trials

• Unified Messaging- IpUnity (voice, video)

• ENUM/DNS- NeuStar (global service provider) and Lucent

(localization) combination

• Presence- Antepo (SIMPLE standard)

• PacketCable Multimedia- CableMatrix or Chamelion

• SIP Proxy- DynamicSoft, Syndeo, Cedar Point

• PacketCable CMS- Syndeo- Cedar Point


PacketCable PCMM Trial Plan

• Deploy a SIP solution to complement PacketCable as soon as possible (Q3/2003)- Enhance to support Presence, ENUM, UM (2004)

• Video Telephony beta system by Q1/2004• Add ENUM & Presence Q2/2004• Add Unified Messaging Q3/2004• Possible Market Trial late 2004


“Good things come to those who wait …but only what’s left them by those who hustle ……”

Abraham Lincoln 1862

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