Migration Of Broadcasting to Next Generation Networks

1. Migration Of Broadcasting to Next Generation Networks Presented by: Motty Anavi VP of Business Development

2. Agenda • Challenges in migrating to Next Generation networks • Technology enablers • Standards • Applications • Summary

3. Traditional Broadcast Telco Use ISDN • Broadcast is encoded digitally • Transferred via either: • Digital telco transmission line • Built-in modem to POTS line ISDN CODEC CODEC TDM Network T1 T1 POTS POTS

4. Changes in Telco Services • Availability of traditional services is diminishing • ISDN almost completely eliminated • Many POTS lines are converted to VoIP • Availability of Next Generation networks is increasing dramatically • Vendors are MD-ing TDM products • New CODECs come in IP versions

5. The Changing Landscape • How can EXISTING broadcast equipment be maintained using the new PSN? ? ? ISDN ISDN TDM Network PSN Network CODEC ? CODEC ? T1 T1 ? ? POTS POTS

6. What is Pseudowire (PW)? • Pseudo = Simulated, Seemingly • Emulation of a native service over a Packet Switched Network (PSN) • The native services can be ATM, TDM, Frame Relay or ETH, while the PSN can be ETH, IP or MPLS • Supports voice, data and video • Provides a transparent tunnel through the PSN • Provides clock distribution and synchronization over PSN

7. What is a Pseudowire (PW)? PSN Network ATM VCC ATM VCC PW Gateway PW Gateway HDLC HDLC TDM TDM

8. VCC/T1 PW-Label PW-Label IP Header VCC/T1 IP Header VCC/T1 PW-Label PW Switching- IP/ETH Switching is done according to the IP addresses 1.User services are mapped to PW PW-Label VCC/T1 2. IP headers added T1-TDM T1-TDM PW Gateway PW Gateway VCC VCC IP/ETH Network ETH ETH VCC VCC 3. The IP Header is stripped 4. PW label mapped back to user services

9. VCC/T1 PW-Label VCC/T1 PW-Label PW Switching – MPLS/ETH 1. User services are mapped to PW Switching is done according to the Tunnel Label 2. Tunnel Label added T1-TDM T1-TDM PW-Label VCC/T1 Tunnel Label PW Gateway PW Gateway VCC VCC ETH ETH MPLS VCC VCC 3. The Tunnel Label is stripped VCC/T1 PW-Label Tunnel Label 4. PW Label mapped back to user services

10. Pseudowire (PW) Product Offerings • Preserves investment in legacy TDM/ATM equipment in migration to PSN • Lowers OpEx of TDM/ATM service by utilizing packet infrastructure • Ultimate voice quality (no compression, no conversion) Packet Network PW Gateway PW Gateway TDM Service TDM Service Pseudowire

11. PW Solution – Private Line / Leased Line over Packet Application: • Carrying broadcast traffic over PSN network Benefits: • Uses PSN to provide voice services • Saves leased line costs by using a single line for voice and data • Preserves legacy TDM equipment, features and functionalities ISDN ISDN CODEC CODEC PSN Network T1 T1 POTS POTS

12. PW Protocols for Different Services

13. TDM PseudowireServices Unframed TDMoIP or SAToP over PSN • T1/E1 line is a 2.048/1.544 Mbps bit stream • Full transparency to the TDM traffic • No multi-bundling • End-to-end framing sync • TDMoIP standard: IETF – ietf-pwe3-tdmoip • SAToP standard: draft-ietf-pwe3-satop- Structure-Agnostic TDM over Packet PBX PBX PW Gateway PW Gateway ETH/IP/ MPLS Network ETH ETH

14. TDM Pseudowire Services (cont.) Framed TDMoIP or CESoPSN • Framed T1/E1 • Multi-bundling • TS0/Fbit termination • Local framing sync • TDMoIP standard: IETF – ietf-pwe3-tdmoip • CESoPSN: draft-ietf-pwe3-cesopsn.txt - Structure-Aware TDM Circuit Emulation Service over PSN PBX PBX PW Gateway PW Gateway ETH/IP/ MPLS Network ETH ETH Framing Sync Framing Sync

15. TDM/HDLC Payload UDP IP ETH CRC CW TDMoIP Payload Size • TDMoIP Unframed/Framed payload size is between 48-1440 bytesn x 48 bytes (where n=1,2,3,……,30) • CESoPSN & SAToP payload size isbetween 32-512 bytes according to the number of time slots in a bundle (configurable) Payload configuration:N – Number of time slots in a bundle L– Packet payload size in bytes • L should be multiple integer (m) of number of time slots in the bundle (N) L = m x N • HDLCoIP mechanism monitors the data stream until a frame (data) is detected (flag)

16. Pseudowire Standards • RAD is actively involved in most of the standardization bodies

17. Extending TDM via Ethernet Radio Transmitter Location • Extends broadcast audio to a remote transmitter site • Cost effective solution by using extremely affordable Ethernet microwave radio • Uses existing CODECs over T1 Pseudowire • Effective range – up to 40 miles Distribution Center Ethernet Microwave Link PW Gateway PW Gateway ETH T1 ETH T1

18. Distributing Content over IP Remote Station • Large PW gateway in Center • Has the capability to break-up a single T1 or send multiple T1s • IP/MPLS network is more cost effective when going long distances • Fully redundant central site solution Distribution Center POP/HUB/CO PWE Gateway PW Gateway T1 ETH T1 ETH/IP/ MPLS Network Remote Station PW Gateway ETH T1

19. TDM Pseudowire Product Line

20. Summary • The changing landscape of Telco services is forcing changes to the way broadcasters use these services • Pseudowire technology allows broadcasters to continue to use existing voice equipment while replacing Telco infrastructure • Pseudowire technology is established and mature to a point where it is becoming widely used • RAD has experience dealing with the various issues that arise with the use of Pseudowire technology Over 110,000 TDM over IP ports installed since 2000 Over 50,000 TDM over IP ports installed in the last 2 years only!