Tuesday, May 19, 2015©Rim Semiconductor Company Confidential and Proprietary – Do Not Distribute Page 1 UPSTREAM DOWNSTREAM RATIO (BANDPLAN) OPTIMIZED FOR VIDEO DELIVERY The enabling technology behind the Cupria™ family of Transport Processors is Internet Protocol Subscriber Line 10 POWER CHANNELS TAILORED TO MATCH COPPER IMPEDENCE PROFILE “IPSL” defines both the signal stream waveform and the encoding / decoding algorithms inside the transport processor chipsets FRAMING OPTIMIZED FOR ETHERNET PAYLOAD 26 AWG COPPER PACKET HEADERS OPTIMIZED TO REDUCE VIDEO LATENCY

Tuesday, May 19, 2015©Rim Semiconductor Company Confidential and Proprietary – Do Not Distribute Page 2 1) Reduced Jitter, Delay and Packet Loss 2) Lower Noise Floor – Improve Performance 3) Pure IP – Eliminate unnecessary overhead 4) Adaptive Noise Management 5) Reduce Latency – Smart “BER” 6) Configure for any combination of upstream and downstream IPSL Working Group is in the process of being established IPSL’s performance advantages include:

Tuesday, May 19, 2015©Rim Semiconductor Company Confidential and Proprietary – Do Not Distribute Page 3 Artifacts are additive and cannot be removed thus, Phy layer jitter & delay must be minimized for video APPLICATION PRESENTATION SESSION TRANSPORT NETWORK DATALINK PHYSICAL APPLICATION PRESENTATION SESSION TRANSPORT NETWORK DATALINK PHYSICAL Reducing Jitter & Delay for HDTV fresh DSL thinking Artifacts get embedded at every layer of the protocol stack DUPLICATE PACKETS INTER-PACKET JITTER OUT-OF-ORDER PACKETS PACKET LOSS Cupria minimizes packet jitter & delay better than VDSL2: - inherent noise tolerance - dynamic noise management - higher % useable payload - superior QOS - reduced latency

Tuesday, May 19, 2015©Rim Semiconductor Company Confidential and Proprietary – Do Not Distribute Page 4 Cupria TM Reducing Jitter & Delay for HDTV fresh DSL thinking MPEG Artifacts with VDSL2 Preserves Detail Renders Fast Motion Moving Background Motion Pixilation Lost Detail

Tuesday, May 19, 2015©Rim Semiconductor Company Confidential and Proprietary – Do Not Distribute Page 5 Noise Power VDSL2 Time Lower Noise Floor - Increases Performance Lowering the noise floor increases maximum bandwidth New RTs deployed within 3-5kft will have lower noise, Cupria uses a -150 dB noise floor versus -140dB PMO - 140dB Constant SNR Floor fresh DSL thinking - Bandwidth Available Noise Power Time Cupria’s -150dB SNR Floor - Bandwidth Available

Tuesday, May 19, 2015©Rim Semiconductor Company Confidential and Proprietary – Do Not Distribute Page 6 Pure IP Access fresh DSL thinking Today’s typical DSL access loop “Pure IP” avoids 10% ATM cell tax REMOTE TERMINAL (RT) TRIPE-PLAY IP GROOMING AT THE CPE ASSURES QOS “Pure IP Backhaul” avoids 10% ATM cell tax & minimizes latency from ATM conversion at the DSLAM “Pure IP” simplifies CO grooming to eliminate ATM switchport costs Pure IP Access Plant ATM-based CPEs ATM Backhaul or “ATM over IP” backhaul CO Ethernet IPTV Network INTERNET IP Network

Tuesday, May 19, 2015©Rim Semiconductor Company Confidential and Proprietary – Do Not Distribute Page 7 Inherent Noise Tolerance To obtain short frames & symbols, we adopted Wideband Modulation Short frames needs less resend time in periods of bursty noise fresh DSL thinking Noise Power Time DATA RESEND Noise Power Time DATARESEND DMT uses Narrowband Modulation with long frames DATA More payload survives using short frames

Tuesday, May 19, 2015©Rim Semiconductor Company Confidential and Proprietary – Do Not Distribute Page 8 Noise Power VDSL2 Time Noise Power Adaptive Noise Management Short frame size also enables dynamic noise rejection, adaptive on-the-fly DATA CUPRIA™ Constant 140dB SNR Floor Dynamic SNR Rejection Level UP TO 8 Db GAIN fresh DSL thinking Dynamic 150dB SNR Floor

Tuesday, May 19, 2015©Rim Semiconductor Company Confidential and Proprietary – Do Not Distribute Page 9 Time Noise Power Adaptive Noise Management Short frame size also enables dynamic noise rejection, adaptive on-the-fly Dynamic SNR Rejection Level UP TO 8 Db GAIN Adaptive SNR performed at RECEIVER ONLY DSLAM Training NOT REQUIRED VDSL2 attempts Adaptive SNR called “Adaptive Bit Loading” which requires DSLAM Training fresh DSL thinking

Tuesday, May 19, 2015©Rim Semiconductor Company Confidential and Proprietary – Do Not Distribute Page 10 “Smart BER” Reducing Latency four QOS levels vs only two in VDSL2 Pre-emptive packet queing can reprioritize on sub frames instead of waiting for complete super-frame fresh DSL thinking Shorter frame size = faster pre-emptive packet queuing Shorter frame size = faster packet re-send Smart BER only re-sends hi-Q packets Triple-Play Grooming at the CPE DATA VOICE DATA VIDEO DATA VIDEO VOICE DATA VIDEO DATA Short frames speed up the packet re-send task VDSL2 frames take up to 100 times longer to recover from packet loss: - 50 times longer to receive damaged packet - 50 times longer to re-send duplicate packet

Tuesday, May 19, 2015©Rim Semiconductor Company Confidential and Proprietary – Do Not Distribute Page 11 Cutting Cost of Video over Copper TYPICAL CUSTOMER SERVICE AREA (CSA) : 600 SUBSCRIBERS REACHING OUT 12Kft Today’s typical CSA & copper plant REMOTE TERMINAL (RT) HOUSING THE DSLAM Cupria’s extended reach requires the fewest RTs - up to 56% less cost New RTs must be deployed to deliver VDSL Fewer new RTs = faster deployment BATTLE FOR THE DIGITAL HOME BATTLE FOR THE DIGITAL HOME valid for: - CO to home - RT to home - Fiber-to-the-Node

Tuesday, May 19, 2015©Rim Semiconductor Company Confidential and Proprietary – Do Not Distribute Page 12 Transparent Network Integration CUPRIA™ is Implemented on DSLAM line cards and CPE Little to no impact on existing network OAM&P

Tuesday, May 19, 2015©Rim Semiconductor Company Confidential and Proprietary – Do Not Distribute Page 13 4Kft 6Kft Delivering Crucial Value Ensures Cable-Competitive Services Leapfrogs Cable Services Delivers Lowest Network Cost Minimizes Operating Costs Accelerates time-to-market Enables Higher ROI than Cable understanding your customer