1. Next-Generation CMTS Solutions: Timing & Roadmaps Tom Cloonan, Ph.D. CTO - Broadband Division ARRIS International June 2006

2. 2 ▪The roadmaps described in this talk are still evolving & subject to change. ▪All CMTS & CM vendors participating in the DOCSIS® 3.0 standardization process are bound by the CableLabs® NDA agreement & are not permitted to discuss details of the DOCSIS 3.0 and DOCSIS 2.0b features. A Few Quick Notes

3. 3 Agenda ▪Introduction ▪M-CMTS & DOCSIS 3.0 History ▪Predictions: The Near Future (2006-2009) ▪Predictions: The Distant Future (2010-2011) ▪Conclusions

4. 4 ▪MSOs are planning for many changes in the future ▪Let’s consider a few quick examples… Introduction

5. 5 2005 2006 2007 2008 2009 1 10 100 1000 30 kbps Avg Bandwidth per subscriber (kbps) 100 kbps 1 Mbps Example of Subscriber Bandwidth Changes Proposed by one MSO

6. 6 Example of CMTS Bandwidth Changes Proposed by one MSO Shift from MPEG-delivered Video to DOCSIS-delivered IPTV DOCSIS MAC Gigabit Ethernet Switching VoD Server Broadcast Analog Video (45 programs = 45 channels) Broadcast Digital SDTV (200 programs = 20 QAMs = 1 Gbps) & Broadcast Digital HDTV (40 programs = 20 QAMs = 1 Gbps) Narrowcast VoD & IPTV (13.6 Gbps / 340 QAM) IP Metro Ntwk RF D5 Edge QAM D5 Edge QAM D5 Edge QAM D5 Edge QAM IP Router HSD & Voice (1 Gbps / 32 QAM & 128 Up Channels) RF US RCV C4 M-CMTS 20K HHP Hub

7. 7 Example of DOCSIS Upstream:Downstream Ratio Changes Proposed by one MSO 2005 2006 2007 2008 2009 0 2 4 6 8 10 12 14 16 18 20 Total # Downstreams/SG Total # Upstreams/SG Total # Ports for 4-Fiber Node Service Group Begin Channel Bonding 1 4 2 4 4 4 8 4 12 8

8. 8 Next-Generation Architectures Must Deliver Key Improvements to Permit MSOs to Evolve their HFC Networks IPv4 – Address Management Complicated management due to limited available IP addresses IPv6 – Address Management Simpler network operations and more IP devices per subscriber Standard bandwidth Single channel limits the services that can be offered Channel Bonded bandwidth Channel bonding increases usable bandwidth enabling new services Fixed upstream / downstream ratio Capital invested in unused capacity as US/DS ratio changes Flexible upstream / downstream ratio Align investment with revenue opportunity Today DOCSIS 2.0 Next Generation Network Architecture M-CMTS and DOCSIS 3.0

9. 9 Agenda ▪Introduction ▪M-CMTS & DOCSIS 3.0 History ▪Predictions: The Near Future (2006-2009) ▪Predictions: The Distant Future (2010-2011) ▪Conclusions

10. 10 MSOs will be able to select from multiple DOCSIS architectures in the near future ▪Integrated CMTS (I-CMTS) − Architecture has all required CMTS modules in one chassis − CMTS has the ability to grow downstreams separately from upstreams − Permits support for full redundancy within a single chassis − Offers simpler management (MSO manages only one network element) ▪Modular CMTS (M-CMTS) − Architecture separates the downstream PHY (EdgeQAM) from the MAC and upstream PHY − CMTS has the ability to grow downstreams separately from upstreams − Allows network elements from multiple vendors if desired − Permits sharing of EdgeQAMs for VoIP, Video, & Data services ▪Some CMTS vendors will offer products supporting both types of architectures ▪MSOs will be able to select the architecture that best suits their needs

11. 11 Edge Resource Mgr Router/ Switch I-CMTS VoD Server Switched Digital BCAST Video Mgr CMMTA STB SG #1 Forward Path SG #1 Reverse Path CMMTA STB SG #2 Forward Path SG #2 Reverse Path HFC Network Topology based on the Integrated CMTS (I-CMTS) Architecture D5 EQAM

12. 12 Edge Resource Mgr D5 EQAM Router/ Switch M-CMTS VoD Server Switched Digital BCAST Video Mgr D5 EQAM CMMTA STB SG #1 Forward Path SG #1 Reverse Path CMMTA STB SG #2 Forward Path SG #2 Reverse Path HFC Network Topology based on the Modular CMTS (M-CMTS) Architecture

13. 13 MSOs will also be able to select from many features in the DOCSIS 3.0 spec ▪Increased downstream & upstream bandwidth per subscriber via Channel Bonding ▪Larger IP address spaces with IPv6 ▪Improved multicast support ▪DOCSIS theft of service security ▪More VPN support ▪Simpler and higher-capacity management systems

14. 14 Channel Bonding: The Primary Driver for DOCSIS 3.0 ▪Competition from DSL & FTTH is pushing MSOs to offer more bandwidth & capacity ▪Business services & other planned service offerings (ex: fast video downloads, IPTV, etc.) are requiring MSOs to offer more bandwidth & capacity to more subs Channel Bonding - Pre-Standard (ex: ARRIS FlexPath™) - DOCSIS 2.0b - DOCSIS 3.0

15. 15 “Packet-based” Channel Bonding Technology was adopted by the CableLabs DOCSIS 3.0 Standard ▪ARRIS FlexPath used Packet-based Channel Bonding ▪ARRIS FlexPath was the first available Pre- Standard Channel Bonding System ▪SW upgrade to CMTS ▪New CM design ▪Permits 4 Downstreams & 4 Upstreams to each CM (160 Mbps down & 120 Mbps up) Standard DOCSIS Channel C4 CMTS CM

16. 16 ARRIS FlexPath Packet-based Channel Bonding Demo & Trial History 200420052006 2007 2Q04 3Q044Q041Q052Q053Q054Q051Q062Q063Q06 4Q06 1Q07 2Q07 World’s 1st Channel Bonding Demo (ARRIS FlexPath at NCTA) Lab & Field Trials of ARRIS FlexPath (ex: NTL in England) World’s 2nd Channel Bonding Demo (ARRIS FlexPath at SCTE) General Availability (August 2006) This road map is subject to change.

17. 17 Agenda ▪Introduction ▪M-CMTS & DOCSIS 3.0 History ▪Predictions: The Near Future (2006-2009) ▪Predictions: The Distant Future (2010-2011) ▪Conclusions

18. 18 Fixed U:D Ratio Integrated CMTS (I-CMTS) Modular CMTS (M-CMTS) Flexible U:D Ratio Next-Gen CMTS Evolutionary Paths DOCSIS 2.0 DOCSIS 3.0

19. 19 Fixed U:D Ratio Integrated CMTS (I-CMTS) Modular CMTS (M-CMTS) Flexible U:D Ratio Next-Gen CMTS Evolutionary Paths DOCSIS 2.0 DOCSIS 3.0 “DOCSIS 2.0b” is defining a subset of DOCSIS 3.0 features for an Accelerated Test Program

20. 20 Fixed Ratio Integrated 2.0 CMTS Fixed Ratio Integrated 2.0 CMTS Fixed U:D Ratio Flexible U:D Ratio DOCSIS 2.0 DOCSIS 3.0/2.0b Flexible Ratio 3.0/2.0b M-CMTS Flexible Ratio Integrated 3.0/2.0b I-CMTS Next-Gen CMTS Evolutionary Paths Integrated CMTS (I-CMTS) Modular CMTS (M-CMTS)

21. 21 Before we answer, let’s do a quick review of past DOCSIS Spec Releases & 1 st Successful Cert Waves 1997199820012002200319992000200420052006 DOCSIS 1.0 Spec Issued 1st Qualified 1.0 CMTS DOCSIS 1.1 Spec Issued 1st Qualified 1.1 CMTS (ARRIS) DOCSIS 2.0 Spec Issued 2nd Qualified 2.0 CMTS (ARRIS) 1st Qualified 2.0 CMTS (Terayon wrote most of spec) 2007 DOCSIS 3.0 Spec Issued ??? M-CMTS Specs Issued ??? When will these new CMTS Architectures be Deployable?

22. 22 Industry Predictions: The Near Future 20062007 1Q062Q063Q064Q061Q072Q073Q07 4Q07 1Q08 2Q08 2008 Interops (2.0/2.0b) Deployments Interops Lab/Field Trials Deployments Interops Lab/Field Trials Lab/Field Trials (since 1Q05) This does not reflect ARRIS product plans- It is a representation of general industry milestones by all Vendors. Pre-Standard (e.g. FlexPath) M-CMTS DOCSIS 2.0b DOCSIS 3.0 Lab/Field Trials

23. 23 Industry Predictions: The Near Future 20082009 1Q082Q083Q084Q081Q092Q093Q09 4Q09 1Q10 2Q10 2010 Deployments This does not reflect ARRIS product plans- It is a representation of general industry milestones by all Vendors. Pre-Standard (e.g. FlexPath) M-CMTS DOCSIS 2.0b DOCSIS 3.0 Lab/Field Trials Lab/Field Trials Deployments

24. 24 Agenda ▪Introduction ▪M-CMTS & DOCSIS 3.0 History ▪Predictions: The Near Future (2006-2009) ▪Predictions: The Distant Future (2010-2011) ▪Conclusions

25. 25 Distant Future Predictions: The Subscriber Base ▪Typical 100K HHP Headends will require their CMTSs to support > 100K CM devices due to the inclusion of CMs, MTAs, and many DOCSIS-enabled STBs per household ▪Subscriber PCs & Network Servers will need to be re- configured with larger buffers & GigE feeds to match the new high-speed Internet bandwidths offered by Channel Bonding ▪MSOs will find that offering high availability & QoS in both I-CMTS & M-CMTS deployments will permit them to differentiate their converged services in a very competitive market

26. 26 Distant Future Predictions: The Applications ▪MSOs will begin to offer more local caching of content (video and data) to minimize Round Trip Times (RTTs) and increase TCP download speeds ▪IPTV with large content libraries from local caches will begin to be heavily offered by MSOs over Channel Bonding systems ▪MSOs will begin finding new applications that make extensive use of Channel Bonding… − ex: MSO-managed WiMax/WiBro networks & Business Services may consume very high backhaul bandwidths w/ up to 500 Mbps feeds (~12 bonded downstream channels)

27. 27 Agenda ▪Introduction ▪M-CMTS & DOCSIS 3.0 History ▪Predictions: The Near Future (2006-2009) ▪Predictions: The Distant Future (2010-2011) ▪Conclusions

28. 28 Do MSOs need a Next Gen CMTS? ▪Flexible bandwidth allocation needed to reduce CAPEX/sub − Discrete deployment of Upstream and Downstream capacity allows new cost-effective services like IPTV ▪Competition from DSL and FTTX is driving Channel Bonding ▪IPv6 is needed to resolve IP address exhaust for large MSO or interconnected IP networks ▪Triple play is moving to converged IPTV, VoIP, and HSD − This requires more bandwidth, security, and IP addresses to facilitate this shift to everything IP, everywhere Answer: Yes… In the form of DOCSIS® 3.0 and Modular- CMTS (M-CMTS) and I-CMTS

29. 29 Conclusions ▪DOCSIS 3.0, I-CMTS, and M-CMTS will all be available in the near future ▪Successful deployment will require: − Detailed traffic engineering work to design Channel Bonded networks − Careful Interops and Lab/Field Trials to ensure product interoperability − Powerful diagnostic tools to assist in trouble-shooting − CMTS vendors with Channel Bonding deployment experience ▪With DOCSIS 3.0 & I-CMTS & M-CMTS, the cable industry is creating a long-term infrastructure that will dominate the edge for years to come

30. 30 Thank You! Contact Information: tom.cloonan@arrisi.com