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

2. 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

3. 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 6QAMs/SG and 4 QAMs/RF Port, and same SDV service groups.
Larger or smaller headends would scale accordingly, but savings will be proportional.

4. 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.

5. 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 BC QAMs
MPEG TS
Broadcast
Narrowcast & Broadcast Digital Services
Modular CCAP
Integrated CCAP
CCAP
Legacy OOB
Analog US DS
Split
Legacy OOB

6. Operational features of CCAP
Open decryption/encryption interfaces

7. 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

8. 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

9. 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

10. 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

11. 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

12. 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 (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

13. 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