1. IPmux-4L Version 1.0

2. IPmux-4L Beta 2009 Slide 2 RAD’s TDM Pseudowire Product Offering Carrier-grade TDM voice or data over packet networks Uniform TDM access across all Last 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

3. IPmux-4L Beta 2009 Slide 3 IPmux-4L TDM Pseudowire Access Gateway Supports TDM, HDLC-based and Ethernet services over Ethernet, MPLS or IP networks with pseudowire technology Ideal solution for PSTN access and TDM trunking Provides cost-effective solution for converging new and legacy services over packet infrastructure Compact 1 U, ½ 19” enclosure 2xE1 ports Wide-range (AC/DC) PS 2xFast Ethernet Ports (UTP) Fast Ethernet port (SFP) Control port Serial port

4. IPmux-4L Beta 2009 Slide 4 IPmux-4LApplications

5. IPmux-4L Beta 2009 Slide 5 Private Line/Leased Line over Packet Beneficial for: Businesses: Small, medium and large enterprises Incumbents migrating services from TDM leased lines to Ethernet links (LAN inter-connect, IPVPN, Fast Internet service) Benefits Customer does not need to replace HW Reduced leased line costs by using a single line for voice and data Reduced OpEx by using Ethernet instead of PDH/SDH networks LAN Building 2 Leased Line GbETH LAN PBX GbETH Ethernet/ MPLS/IP TDM Pseudowire Ipmux-4L PBX Building 1

6. IPmux-4L Beta 2009 Slide 6 TDM Backhaul/Trunking over Packets Beneficial for: Alternative Carriers provisioning IP based services without leasing capacity from Incumbent carrier Incumbent providing IP services Benefits Supports 63 pseudowires (31 per each E1 port and 1 per the Serial port) Grooms fractional E1s for efficient use of E1 ports on the central & remote site devices FE Ethernet/ MPLS/IP SDH Class 5 Switch Ipmux-4L IPmux-4L E1 FE E1 PBX

7. IPmux-4L Beta 2009 Slide 7 Offering Different Service Levels using Ipmux-4L The user has Internal LAN services and Internet access through the main site router The IPmux-4L adds a different tag for the Internet and Internal LAN traffic – double VLAN tag is limited for egress port. Different priority levels for service differentiation Transparency to customer’s internal VLANs TLS Service+ Internet Access TLS Service Internet Access Ipmux-4L TDMoIP VLAN 100 TLS VLAN 200 Internet Access VLAN 201 ETH Network High Priority Medium Priority Low Priority Internet IPmux-4L

8. IPmux-4L Beta 2009 Slide 8 IPmux-4L E1s IPmux-216 E1s LAN Fixed Wireless Main LocationLocation A Location B Fixed Wireless E1 and LAN Transparent Traffic Extension over Fixed Wireless Links Beneficial to: Campus, Military, Enterprise Benefits: Instant multi-site infrastructure Delivers high bandwidth without need for cabling or licensed radios Transparent TDM and LAN traffic supports existing voice, data and video TDM Network LAN IPmux-4L E1s Location C LAN IPmux-4L E1 Fixed Wireless

9. IPmux-4L Beta 2009 Slide 9 E1, High-speed and LAN Traffic Extension over Fixed Wireless Links Beneficial to: Campus, military, enterprise, rural area connectivity Benefits: Instant multi-site infrastructure Delivers high bandwidth without need for cabling or licensed radios Transparent TDM and LAN traffic supports existing voice, data and video IPmux-4L PBX Site A Site B 2 x E1 IPmux-4L PBX 2x E1 EMS V.35 Router V.35 Fixed Wireless LAN

10. IPmux-4L Beta 2009 Slide 10 Legacy Leased Lines over any Packet Access Technology GbE Fixed Wireless GbE/FE over Fiber (Pt-2-Pt, xPON) n x E1/T1 or C.T3 or C.STM-1/OC-3 Cable HFC Infrastructure Central GW Gmux-2000 Ethernet/IP/ MPLS Core Network xDSL PSTN Ethernet over Cable FE / GbE Ethernet IPmux-24 E1/T1 Ethernet E1/T1 GbE/FE FE Ethernet E1 FE Ethernet 1 x E1/T1 Target Customers: Alternative Carriers and Cable MSOs Enterprises and public institutes Incumbents migrating to PSN IPmux-4L IPmux-24 IPmux-216 IPmux-24

11. IPmux-4L Beta 2009 Slide 11 6 x Fast Ethernet TDM PW Gateways Broad range of interface options Voice, TDM and Ethernet services Cost competitive 16 E1/T1 RADview Gmux-2000 GbE SDH/ SONET ADM IPmux-1E Megaplex ML-IP 4 FXS/FXO/ E&M/BRI 120 Analog phones And more… IPmux-24 4 E1/T1 2 x Fast Ethernet/GbE IPmux-216 2 x Fast Ethernet/GbE Metro Ethernet Network FE 16 E1/T1, 2 E3/T3, 2 C.T3 PSTN UP TO: 196 E1/T1, 2 OC-3/STM-1 IPmux-4L E1/T1 2 x Fast Ethernet IPmux-16 GbE FE

12. IPmux-4L Beta 2009 Slide 12 IPmux-4LFeatures

13. IPmux-4L Beta 2009 Slide 13 Legacy and Ethernet Services TDM Service 4 framed or Unframed E1 with CAS and CCS signaling and up to 63 DS0 (timeslot) bundles Fully transparent emulation of TDM circuit Conforms to the most strict jitter and wander standards Ethernet Service 2 Fast Ethernet-service ports Ingress and Egress rate limiting VLAN stacking (Q-in-Q)

14. IPmux-4L Beta 2009 Slide 14 Pseudowire Technology Complies with the leading pseudowire standards TDMoIP and CESoPSN – for structured TDM service SAToP – for unstructured TDM service HDLCoPSN for HDLC based service Supports packet networks as transport Network types: Ethernet, MPLS, IP Compensates for packet delay variation (PDV) with configurable jitter buffer Overcomes lost or mis-ordered packets, common in IP networks Performance and flexibility Minimum intrinsic delay with ASIC based architecture Up to 63 concurrent pseudowires with TDM DS0 level grooming Each pseudowire can be assigned any number of time slots (bundles) Pseudowires are individually configured for TDMoIP, CESoPSN, HDLCoPSN or SAToP

15. IPmux-4L Beta 2009 Slide 15 Clock Recovery and Timing Timing TDM ports can be configured for timing as any standard TDM device LBT – Loopback Timing Internal – Using the IPmux-4L internal oscillator External – Using a dedicated clock port with external clock source Adaptive Clock Recovery The remote IPmux-4L can recover the original transmitting clock over the packet network with great accuracy Clock recovery mechanism per TDM port G.823 Traffic Interface mask for high quality E1 circuit

16. IPmux-4L Beta 2009 Slide 16 Ethernet and QoS Support Ethernet capabilities VLAN aware and unaware bridge VLAN stacking, Q-in-Q – limited for Egress port 3 X ETH wire speed +TDMoIP non-blocking switching capacity Egress and ingress rate limiting Quality of Service / Class of Service 4 queues implementing strict and WFQ priority Supports priority according to 802.1P bit or TOS/DSCP bits Egress network traffic marking: TOS/DSCP for IP networks, p bit for Ethernet and EXP Bits for MPLS networks are only supported for TDM PW Traffic

17. IPmux-4L Beta 2009 Slide 17 Management and OAM Management DB-9 Craft port Telnet, Web and terminal Defect detection, notification and localization Performance monitoring TDM PW OAM Ensuring correct end-to-end provisioning of TDM Pseudowire Prevention of Network traffic load in case of connectivity lost

18. IPmux-4L Beta 2009 Slide 18 IPmux-2L/4L and IPmux-24 Comparison Table FeatureIPmux-24IPmux-2L/4LComments Max. E1/T1 ports1,2,41,2,4 only E1 IPmux-2L/4L don't fit the North American market. GbE supportYesNo Management PlatformService CenterRADview EMS SSH, SSL, RADIUS SNMPv3YesSNMPv2 MEF 14 and 9 (EPL)YesNo The Ipmux-24 is also MEF-18 ready Advanced Clock Recovery (OCXO) YesNo Hardened OptionYesNo Real-time clock, alarm port, external clock YesNo Ring SupportYesNo Serial Port (X.21,v35, v36, RS550, RS232) NoYesIPmux-2L only Uplink port Redundancy (802.3ad) YesNo

19. IPmux-4L Beta 2009 Slide 19 TDM PW Available Product Line Products TDM Service Ethernet ServiceNetwork LinkStandards MiTOP 1 T1/E1Provided by the host switch CESoPSN SAToP IPmux-1E 4 FXS/FXO/E&M 4 BRI 1 user port Rate limit (optional) 1 UTP/Fiber Fast Ethernet TDMoIP IPmux-2L /4L 1/2 /4 E1 Nx64 Serial port (only 2L) 2xUser - Rate limiting - VLAN tag+stack 1x FE UTP/SFP TDMoIP CESoPSN SAToP IPmux-24 IPmux-216 1/2/4 T1/E1 8 or 16 T1/E1 1xUser, 1xNet/User - Rate limiting - VLAN tag+stack - MEF 9&14 EPL 2x FE/GE, UTP/SFP TDMoIP CESoPSN SAToP IPmux-155L 2 x STM-1 32 FE user ports (UTP or SFP) 4 GbE ports (UTP or SFP) with LAG SAToP Gmux-2000 196x E1/T1 or 2 x C.OC-3/STM-1 or 7 x C.T3 FE Management 2 UTP or SFP GE TDMoIP CESoPSN SAToP

20. IPmux-4L Beta 2009 Slide 20 IPmux-4L Summary Competitively priced pseudowire gateway 4xE1 port CLE/NTU Up to 3 Fast Ethernet service/network ports Complete pseudowire support for TDM services with TDMoIP, HDLCoPSN, CESoPSN and SAToP Ethernet, MPLS and IP network support TDM Pseudowire OAM

21. IPmux-4L Beta 2009 Slide 21 www.rad.com thank you for your attention