Presented by: Jacky Acoca Product & Business Development Management IPmux-155L Version 1.0 General Availability February 2010

IPmux-155L Ver 1.0 – 2010 Slide 2 Outline Pseudowire/TDMoIP Concept IPmux/Gmux Product Line Ipmux-155 Product description Applications Features details Market overview Success stories

IPmux-155L Ver 1.0 – 2010 Slide 3 RAD’s TDM Pseudowire Product Offering Carrier-grade TDM voice or data over packet networks Uniform TDM access across all first mile infrastructure types Preserves investment in legacy equipment in migration to PSN Lowers OpEx of TDM service by utilizing packet infrastructure Carrier-grade voice quality (no compression, no Silence Suppression) Pseudowire Packet Network PE POP/HUB/CO CE TDM Service TDM Service Last Mile PE

IPmux-155L Ver 1.0 – 2010 Slide 4 RAD’s TDMoIP Technology TDMoIP technology comes to solve these challenges: “Packetization” of TDM traffic The TDM traffic has to be “packetized” and encapsulated before being sent to the PSN. Attenuate Packet Delay (Latency) and Packet Delay Variation (PDV) Packet networks create latency and more important PDV Resistance to Frame Loss and Re-sequencing Packet networks experience loss and miss-order of frames, this may disrupt the TDM service. Recover Clock and Synchronization Legacy TDM devices require synchronized clock to function, this clock has to be re-generated across packet networks. RAD’s Technology: First deployed in 1998 ASIC based technology for true wire-speed and minimal delay.

IPmux-155L Ver 1.0 – 2010 Slide 5 How Does TDMoIP Work? The synchronous bit stream is segmented Headers are added to each segment to form the Packet Packets are forwarded to destination over the PSN network At destination, the original bit stream is reconstructed by removing headers, concatenating frames and regenerating the timing TDM Frame TDM Frame Ethernet/IP Packets Packet Switched Network

IPmux-155L Ver 1.0 – 2010 Slide 6 TDMoIP - Typical Application Application: Carrying PBX traffic over Ethernet network Benefits: Using existing Ethernet infrastructure to provide voice services. Saves leased line costs. Preserving legacy TDM equipment, features and functionalities. Building 1 LAN Building 2 Leased Line LAN PBX GbE

IPmux-155L Ver 1.0 – 2010 Slide 7 IPmux/Gmux Products

IPmux-155L Ver 1.0 – 2010 Slide 8 RADview Gmux-2000 GbE IPmux-1E Megaplex ML-IP 4 FXS/FXO/ E&M/BRI 120 analog phones and more… IPmux-2L/4L Serial 1, 2 or 4 E1 2 x Fast Ethernet IPmux-24 1, 2 or 4 E1/T1 2 x FE / GE 8/16 E1/T1, 2 x FE / GE IPmux-216 UP TO: 196 T1/E1, 7 Chan. DS3, 7 OC-3/STM-1 Interfaces Aggregation Daisy Chain Ring P2P Fiber, xDSL, Wireless, DS3 or OC3 (via MiRIC) Topologies P2P (Link Redundancy) IPmux/Gmux Solutions Overview IPmux-155L Ethernet, IP or MPLS Network PSTN PDH SDH/ SONET

IPmux-155L Ver 1.0 – 2010 Slide 9 CPE/CLEPoP/CO/HubAccess/Aggregation Gmux-2000 IPmux-216IPmux-24 Entry Level TDM Pseudowire Product Portfolio IPmux-2L IPmux-4L IPmux-155L IPmux-1E

IPmux-155L Ver 1.0 – 2010 Slide 10 TDM PW Available Product Line Products TDM Service Ethernet User PortsNetwork LinkPWE Standards MiTOP 1 xT1/E1 or 1 x E3/T3SFP CESoPSN SAToP IPmux-1E 4x FXS/FXO/E&M 4x BRI 1x User 1 UTP/Fiber Fast Ethernet TDMoIP IPmux-2L /4L 1/2 /4 x E1 Nx64 Serial port (only 2L) 2x Users 1x FE UTP/SFP TDMoIP CESoPSN SAToP IPmux-24 IPmux-216 1/2/4 xT1/E1 8 /16 x T1/E1 1xUser, 1xNet/User (UTP or SFP) 2x FE/GE, UTP/SFP TDMoIP CESoPSN SAToP IPmux-155L 1+1STM-1 32x FE user ports (UTP or SFP) 4 GbE ports (UTP or SFP) with LAG SAToP Gmux x E1/T1 or 7 x C.OC-3/STM-1 or 7 x C.T3 No user port 2 UTP or SFP GE TDMoIP CESoPSN SAToP

IPmux-155L Ver 1.0 – 2010 Slide 11 IPmux-155L Hub-site Pseudowire Access Gateway (Mini-Gmux) 32 FE user ports (UTP or SFP) 4 GbE network ports (UTP or SFP) 1+1 channelized STM-1 ports 2x Pluggable power supply and fans units Only SAToP support in first phase (CESoPSN in version 2) EMS based management 1U, 19” box (300mm depth) 32 FE UTP/ SFP Ports 4 GE UTP/SFP Network Ports Station clock 1+1 STM-1 ports Terminal craft port, Alarm relay

IPmux-155L Ver 1.0 – 2010 Slide 12 Main Features FeatureDescriptionCustomer Benefits PWE Support PW supports only unframed mode, Standard: SAToP Encapsulation: UDP/IPUDP/IP PW OAM: RAD proprietary OAM protocol Supporting TDM PW connectivity over Metro Ethernet (L2) networks Clock Support Supports input/output BITS timing interfaces (2 options), along with RJ-45 and BNC connectors Supports Adaptive Timing Clock Recovery per E1 System Clock from STM-1, GE, BITS input or selected remote CPE E1 service Flexibility to support different clock synchronization schemes GbE PortsUp to 4 GbE network ports (UTP and SFP) Ver 2.0 will enable LAG between GbE network modules Redundant Channelized STM-1 Ports 1+1 channelized STM-1 ports (SFP)Port redundancy with APS ETH User Ports System provides 16 or 32 FE service interfaces (SFP or RJ-45) Remote CPE device, such as IPmux, IPmux-4L over fiber/copper VLAN process based on 802.1Q, 4k entries, port-based VLAN, double tagging support Programmable Broadcast, Multicast, and Unknown Unicast storm control Supports applications with ETH and TDM Eliminates the need for an additional external switch

IPmux-155L Ver 1.0 – 2010 Slide 13 Gmux-2000 and IPmux-155L Comparison Table FeatureGmux-2000IPmux-155L E1/T1 ports196 x E1/T132 x E1 (Ver. 2) GbE ports2+24 Ch. STM-1/OC-31+1 (6 with 1+1 in ver. 4.0)1+1 Ch.T3 ports7None FE user portsNone32 LAG (802.3ad) Yes (between ports on the same module, and between ports on different modules) Yes in version 2.0 for GE network ports Fully Hardware redundant Yes (all HW modules can be protected) No. Only the power supply and the fans have redundancy CESoPSN, SAToP, TDMoIP and CESoETH support Yes Only SAToP at first phase, all the rest in version 2.0 Service CenterYesNo SSH, RADIUS, SNMPv3YesSNMPv1, SNMPv2c

IPmux-155L Ver 1.0 – 2010 Slide 14 ETH E1 IPmux-155L Multi-Service Solution over Fiber in the Last Mile Benefits Reduce Opex/Capex by Multiservice aggregation device at the PoP Both E1 and Eth services over single Fiber Complete Last Mile solution Economical, compact and high port density TDM gateway Eliminates the need for extra Ethernet switch Fiber PSN IPmux 4 x GbE SDH 1+1 STM-1 FE IPmux FE/GbE IPmux-155L IPmux ETH E1 Fiber ETH E1 POP/CO

IPmux-155L Ver 1.0 – 2010 Slide 15 IPmux-155L STM-1 Trunking Application Benefits Save on STM-1 leased line cost Small footprint and low power consumption Redundancy with 1+1 STM-1 GbE PSN SDH GbE Class 5 Switch STM-1 PBX IPmux-155L PSTN STM-1

IPmux-155L Ver 1.0 – 2010 Slide 16 Legacy Leased Lines over Any Packet Access Technology Customer Benefits For the enterprise end user Preserving investment in legacy TDM equipment Reducing transport cost For the carrier end user Alternative carriers can increase revenue by selling TDM services Reducing OpEx – one transport network Standards-based TDM over packet using any access method GbE Fixed Wireless STM-1 Cable HFC Infrastructure IPmux-155L PSN Core Network xDSL PSTN Ethernet over Cable FE / GbE IPmux-24 n x E1/ ETH PBX n x E1 ETH IPmux-216 PBX IPmux-24 n x E1 ETH PBX IPmux-2L/4L n x E1 ETH PBX GbE/FE over Fiber (Pt-2-Pt, xPON) Serial

IPmux-155L Ver 1.0 – 2010 Slide 17 Leased Lines over xPON – Typical Application GbE C.STM-1 IPmux-155L PSTN n x E1 IPmux-4L PBX n x E1 PBX IPmux-4L ONT OLT SFP-ONT GEPON only Passive Splitter FE ETH 1 x E1 PBX MiTOP ONT Customer Benefits: Offering TDM services over PON infrastructure Advantage: Multiple clock domains Low E2E delay over the PON transport Highly accurate clock recovery

IPmux-155L Ver 1.0 – 2010 Slide 18 Features Details

IPmux-155L Ver 1.0 – 2010 Slide 19 Legacy Services TDM Service Channelized STM-1 unframed E1 mode (with No E1 service ports) STM-1 uplink optical interfaces (SFP),are 1+1 unidirectional line protection STM-1 support the 63xE1 asynchronous mapping Fully transparent emulation of TDM circuit Conforms to G.823/4 jitter and wander requirements PW Features PW support only unframed mode: SAToP (CESoPSN in version 2) Encapsulation: UDP/IP Support up to 480 pseudowires PW OAM: RAD proprietary OAM protocol

IPmux-155L Ver 1.0 – 2010 Slide 20 Slide 20 Clock Recovery and Timing Timing TDM ports can be configured for timing as any standard TDM device Support input/output BITS timing interfaces (2 Options), along with RJ-45 and BNC connectors Support Adaptive Timing Clock Recovery per E1 System Clock from STM-1, GE, BITS input or selected remote CPE E1 service reference Adaptive Clock Recovery The remote IPmuxs can recover the original transmitting clock over the packet network with great accuracy Independent clock recovery mechanism per TDM port 16 ppb frequency accuracy with 1 ppb/day holdover for cellular backhaul G.823/G.824 synchronization mask for high quality E1 circuit G.8261 synchronization over packet networks conformant

IPmux-155L Ver 1.0 – 2010 Slide 21 Switching and Bridging Working modes: VLAN-unaware bridging VLAN-aware bridging (802.1Q and 802.1p) MAC entries: 8K Static and/or dynamic learning Frame support up to 2048 bytes Transparent to all Ethernet control protocols except Flow control can be peered or discarded

IPmux-155L Ver 1.0 – 2010 Slide 22 QoS – Traffic Classification and Prioritization Rate Limitation: A means to provide CIR Per subscriber port Classification: Distinguish between classes of service Physical port P bit DSCP/ToS Mapping and Queuing 4 Queues per port, for 4 Classes of Service (CoS) according to Strict priority or HQP+WRR SP+WRR gets a priority: 3 Strict priority - packets are transmitted according to queue priority 0, 1, 2

IPmux-155L Ver 1.0 – 2010 Slide 23 Redundancy Capabilities Power Supply redundancy Fans redundancy STM port redundancy (APS) unidirectional line protection

IPmux-155L Ver 1.0 – 2010 Slide 24 PWE OAM Connectivity Verification Challenge: PSN networks have no inherent connectivity verification mechanism between two end points Solution: Provide path fault detection for an emulated PW over PSN Detect faults occurring on the remote end in order to prevent IP/ETH network flooding Needed for E2E redundancy mechanisms

IPmux-155L Ver 1.0 – 2010 Slide 25 TDM PW – TDMoIP OAM* TDM PWs generate constant traffic over the PSN (regardless of the TDM traffic) Therefore, there is no need for “keep-alive” messages during steady state During device failure condition, we need to stop traffic transmission in order to prevent PSN flooding The PW GW will initiate a “keep alive” messages based on TDMoIP OAM protocol, just in case a failure was detected * TDMoIP OAM – RAD’s proprietary Operation Administration and Maintenance protocol PW Wait 10 sec 5 OAM messages Failure PW-GW PSN Wait 2 sec for an answer and then stop transmission

IPmux-155L Ver 1.0 – 2010 Slide 26 Management RADview-EMS is a unified carrier-class management platform for RAD devices using a variety of access channels as SNMPv1/3, HTTP/S, TFTP and Telnet/SSH. In addition, it features third-party device monitoring capabilities

IPmux-155L Ver 1.0 – 2010 Slide 27 Management, Benefits & Features ● Turnkey system including hardware and software! ● Fully compliant with TMN standards ● Client/server architecture with multi-user support ● Interoperable with third-party NMS and leading OSS systems ● IBM Tivoli’s Netcool®/OMNIbus™ plug-in ● Minimize integrations costs associated with new NE additions Benefits ● Ensures device health and congestion control ● Topology maps and network inventory ● Advanced FCAPS functionality ● Software & configuration management ● Business continuity - High-Availability and Disaster Recovery ● Handover between operators Key features

IPmux-155L Ver 1.0 – 2010 Slide 28 Device Management RAD products support the following management capabilities ● SNTP ● CLI/Menu driven terminal ● TFTP ● SNMP v1 and SNMP v2c ● Statistics collection ● Out-of-band mgt port ● In-band mgt Device Management

IPmux-155L Ver 1.0 – 2010 Slide 29 Slide 29 IPmux-155L Ordering Information ModuleFunctionality IPMUX-155L/48R/N/UNFR/NULL/4N Hub-site Pseudowire Access Gateway, 48DCR, unframed VC12 with 4GE network interface IPMUX-155L/48R/2/UNFR/NULL/4N/32N Hub-site Pseudowire Access Gateway, 48DCR, unframed VC12, 32 Eth SFP and with 4GE network interface IPMUX-155L/48R/N/UNFR/NULL/4N/32UTP Hub-site Pseudowire Access Gateway, 48DCR, unframed VC12, 32 Eth UTP and with 4GE network interface IPMUX-155L/ACR/N/UNFR/NULL/4N Hub-site Pseudowire Access Gateway, ACR, unframed VC12 and with 4GE network interface IPMUX-155L/ACR/N/UNFR/NULL/4N/32N Hub-site Pseudowire Access Gateway, ACR, unframed VC12, 32 Eth SFP and with 4GE network interface IPMUX-155L/ACR/N/UNFR/NULL/4N/32UTP Hub-site Pseudowire Access Gateway, ACR, unframed VC12, 32 Eth UTP and with 4GE network interface IPMUX-155L-PS/AC/DCIPmux-155L power supply module, AC or DC

IPmux-155L Ver 1.0 – 2010 Slide 30 Market Overview

IPmux-155L Ver 1.0 – 2010 Slide 31 Target Customers Enterprises, government and public institutes Preserving investment in legacy TDM equipment Reducing monthly transport cost Carriers Alternative carriers can increase revenue by selling TDM services Incumbents can reduce OpEx – one transport network

IPmux-155L Ver 1.0 – 2010 Slide 32 Market Trends Growing availability of PSN with QoS and traffic engineering in the WAN Growing fiber deployment to the Business (xPON) Incumbents are pressed to reduce OpEx and evaluating TDM PW Standardization RAD is considered as market leader in TDM PW with best of the breed PW gateways (70% of the market)

IPmux-155L Ver 1.0 – 2010 Slide 33 Summary TDM PW – Value Proposition Saves money Preserves investment in legacy equipment in migration to PSN Lowers OpEx of TDM service by utilizing packet infrastructure Simple configuration Carrier-grade TDM voice or data Highly accurate clock recovery OAM, NMS and security capabilities Transparency No compression, no silence suppression Uniform TDM access All first mile infrastructure types are supported Standardized solution Over 110,000 TDMoIP ports installed since 2000 Over 50,000 TDMoIP ports installed alone in the last two years

IPmux-155L Ver 1.0 – 2010 Slide 34 TDM PW Success Stories

IPmux-155L Ver 1.0 – 2010 Slide 35 4 E1 PSTN Access over packet - QSC, Germany Gmux-2000 SDH STM-16 IP IPmux-14 Remote Voice Switch GbE STM-1 E1’s PSTN IPmux-14 Remote Voice Switch IPmux-14 4 E1 Remote Voice Switch FE 4 E1 ADM Customer Benefits: Cost efficient backhaul over PSN Replacing expensive leased STM-1 link OpEx reduction No local maintenance team for remote PABX Enables competitive long distance phone service RAD Advantages: Proven experience in TDM over IP deployments

IPmux-155L Ver 1.0 – 2010 Slide x E1 Bank application in UK- STM-1 Trunking over PSN GbE Gmux x E1 Customer Benefits: Offering TDM services with low transport cost RAD Advantage: High port density and best price per port Turret Connections Production Systems Back-up Systems Gmux-2000 GbE Gmux x E1 MPLS

IPmux-155L Ver 1.0 – 2010 Slide 37 North American Cable MSO Mobile Backhaul Application BSC Metro Ethernet MPLS BSC OC-3 Mobile Operator A Transport Provider Gmux Multiple Towers Multiple Operators Per Tower Fiber GE IPmux-16 T1s IPmux-16 T1s I Pmux-16 T1s Mobile Operator B OC-3 Gmux GE Benefits Multiple mobile operators per tower, each adaptively timed from own source Network reliability and redundancy with sub 50ms failover “Important considerations were T1 density, Ethernet switching, fiber interfaces and reliable long term partner,” Major Cable MSO

IPmux-155L Ver 1.0 – 2010 Slide 38 Promitel –Cellular Backhauling for TIGO Colombia Customer Benefits: High resiliency Re-use of obsolete SDH access ring Without fiber re-layout RAD Advantage: Up to 16 nodes in a ring, with sub 50ms switching time IPmux-24 E1 GbE Ring BSC n x E1/ STM-1 Gmux-2000 IPmux-24 Metro Ethernet MPLS IPmux-24 E1 IPmux-24 E1

IPmux-155L Ver 1.0 – 2010 Slide 39 Leased Lines over GPON – Latin America GbE n x E1/T1 or C.STM-1 Gmux-2000 PSTN n x E1 IPmux-216 PBX n x E1 PBX IPmux-24 ONT OLT ONT Passive Splitter FE Customer Benefits: Offering TDM services over PON infrastructure RAD Advantage: Multiple clock domains Very low intrinsic delay (ASIC based)

IPmux-155L Ver 1.0 – 2010 Slide 40 Thank you for your attention Jacky Acoca