Next Gen Access Architecture CCAP (CMAP) Program at Comcast SCTE 2011 July, 2011

Why would MSOs need CCAP? Engineering: Capacity and efficiency, frees significant HE capacity 50% space savings with 4x capacity 60% power savings plus less cooling Improve existing UPS and battery backup performance Architecture: Simplicity and flexibility is already a key driver Minimum, simplified combining wiring Full-spectrum, MPEG/DOCSIS QAMs, easier migration to ADS Future proof, single access platform Purchasing: Cost will quickly become a big driver CMTS 4-6 DOCSIS channel cost equals CCAP 16 DOCSIS + 16 MPEG Channels !! Operations: Reliability and manageability will also drive adoption Fully redundant (N+1 LC & 1+1 Commons) Configuration change between QAM types vs. equipment swap-out Much shorter maintenance window (ISSU) Far less equipment to manage and maintain

CCAP space efficiency example Top view of headend rack line-up Each box represents a rack Example for illustrative purposes Today’s HE: 16 NC QAMs per SG After CCAP: 64 NC QAMs per SG Digital Broadcast 20 QAMs OOB OOB SDV 6 EQAM 6 EQAM 4x Capacity VOD 6 EQAM 6 EQAM CMTS CMTS CCAP 1/2 Space Combiner & Amps Ret Fwd Ret Fwd Lasers & Receivers Ret Fwd Ret Fwd CCAP eliminates the need for headend expansions NOTES: Deployment example assuming 40K homes passed, 200 nodes, 140 D3 HSD service groups at 16 SG/chassis, 120 VOD SGs @ 6QAMs/SG and 4 QAMs/RF Port, and same SDV service groups. Larger or smaller headends would scale accordingly, but savings will be proportional.

CCAP yearly power savings in a typical headend Device Pre-CCAP KWH/Year Post-CCAP KWH Savings Percentage Saved Digital Broadcast 60,196 100% SDV 140,160 VOD CMTS->CCAP 277,984 227,760 50,224 18% Combine/Amp 5,676 3,784 1,892 33% Lasers/Receivers NA Total 624,176 231,544 392,632 63% CCAP saves 60% of power, not including cooling energy savings! UPS and battery requirements are also reduced – existing capacity will last considerably longer when power is interrupted.

CCAP in a nutshell CCAP DS RF Port Modular CCAP Integrated CCAP Converged Cable Access Platform Combines the functions of the CMTS and Edge QAM Implements all narrowcast and broadcast QAMs CCAP in a nutshell CCAP DS Port Assignments HSD CDV Simplify, and eventually eliminate RF Combining DOCSIS DS RF Port AVS VOD nDVR SDV 32/48/64 NC QAMs + 96 BC QAMs MPEG TS Broadcast Narrowcast & Broadcast Digital Services Modular CCAP Integrated CCAP CCAP Legacy OOB Analog US DS Split Legacy OOB

Operational features of CCAP Open decryption/encryption interfaces

Integrated vs. Modular CCAP components Similar boxes for both HE Router ICCAP Single CCAP Vendor I-CCAP IP Sub & Flow Management Routing PASI HE Router / M-CCAP PS ICCAP Best-in-Class Expertise M-CCAP AS Each approach has pros and cons

CCAP use cases examples (two of several) Add density with CCAP Access Shelf in DS-only mode Where I-CMTS exists For M-CMTS markets HE Router HE Router Shorter Term Bcast VOD SDV BCast VOD SDV HE Router Today UR UR M-CMTS Core UR I-CMTS UEQAM UR US US M-CMTS Core M-CCAP AS in DS mode DS DS US DS Eventually I-CCAP or… …M-CCAP HE Router Migrate to I-CCAP & relocate CCAP-AS Or, add CCAP PS HE Router Existing Router w/PS SW Add US LCs HE Router / M-CCAP PS Longer Term Options Future UR I-CCAP UR UR I-CCAP UR M-CCAP AS US DS US DS US DS

CCAP migration options Capacity Augment New Service Deployment Infrastructure Upgrade Drop in CCAP as SGs are split or EQAMs/CMTSs are added Keep current equipment and eventually move to other locations Add CCAP for new service Maintain existing equipment for existing services Eventually integrate other services into CCAP Add CCAPs for all SGs in key HEs Independent of services Existing equipment relocated Broadcast and OOB Broadcast and OOB Broadcast and OOB SDV/VOD EQAMs SDV/VOD EQAMs CCAP for New Service CCAP CMTSs CCAP CMTSs Combiner Combiner Combiner Lasers and Receivers Lasers and Receivers Lasers and Receivers Existing SGs Existing SGs New SGs Existing SGs

Preparing for CCAP Work underway in the many areas at Comcast: Systems: configuration, monitoring, logging, fault detection, trouble management, inventory, databases, etc. Operations: changes to deploy and manage single device Testing: process (who/how/when and what order), and edge QAM, DRFI performance, new features, and new services (RS-DVR, AVS) Deployment planning: Network models for system types: very large to very small HEs Trials starting in 2011: operational readiness focus, not equipment New combiner equipment: optimized for CCAP and remaining inputs Working with Motorola and Cisco on encryption licensing model and ECMG implementation plan

CCAP operational readiness trial – concept diagram CCAP-like network to understand technical/ops issues and prepare Operational processes, tools, network engineering, etc. The trial is about MSO operations, NOT to test equipment The scope will be minimal but meaningful (few service groups) Collaborative effort with Cox and Rogers OTHER QAMs Combiner ANALOG TEST ~120 2-4 DTA M-CCAP AS in DS-only mode 6 DS BCAST 4 SDV 20-24 4 VOD All services 4 M-CMTS Core US

Completing CCAP specifications Large team of industry experts developing CCAP specs Key engineers and architects from all EQAM and CMTS vendors Agreements with Cablevision, Charter, Cox, LGI/UPC, NCTC, Rogers, and others, plus working with TWC on common requirements Direct support from CableLabs; now working on CL CCAP Specs Cable Europe Labs representing the 15 largest MSOs in Europe MSO specification documents: Phase 1 completed in March 2010 (focus on HW & Functions) Phase 2 completed in July 2010 (added Config & Mgmt and PASI) Phase 3 completed in Nov. 2010 (expanded all specs; wrote CL TR) Phase 4 in progress, adding adv. Functions, ATP and updated CL TR (target Sept. ’11) CableLabs working on CCAP OSSI and PASI specs Changed name to converge TWC and Comcast efforts

Summary and conclusions Thank You!! Summary and conclusions CCAP Platform is the Next Gen CMTS and Edge QAM Natural technology evolution; cost effective, simple and redundant Supports all digital services (VOD, SDV, Broadcast, HSD/voice) Easy migration from MPEG-TS to DOCSIS Many MSOs need the CCAP ASAP Operational simplicity and benefits are staggering CCAP QAMs are much more cost effective Expect initial trials in 2011 and initial deployments in 2012 Please let us know of any interest in participating, or of questions, comments and especially suggestions jorge_salinger@cable.comcast.com saifur_rahman@cable.comcast.com