Ing. Sistemas

TDM Pseudowire Gateways
Product Presentation
Updated: 22-Nov-2011

Presented by: Ido Miran Product Line Manager

IPmux-L Product Line 2011 Slide 1

Outline
• • • • Introduction to Pseudowire/TDMoIP Market, Customers RAD’s TDM Pseudowire Product Line IPmux-L Product Family:
– – – – – IPmux-2L & 4L (v1.x) IPmux-4LGE (v2.0) IPmux-16L (v1.0B) IPmux-155L (v2.1) Common Features

• TypicalApplications • Success Stories • Value Proposition
IPmux-L Product Line 2011 Slide 2

RAD Products Strategy
Services/CPE
Legacy Services Existing Equipment
ATM DSLAM 2G BTS 3G NodeB

AccessAccess Lasts That

Networks Legacy Networks

Legacy
Serial

SONET/SDH, ATM

New Services and Equipment
IP DSLAM

IP RAN 4G eNodeB

New

New Packet-Switched Networks
Ethernet, IP/MPLSEthernet

• Continued support of legacy services and traffic over legacy networks
• Legacy services and traffic over NGN - Ethernet/MPLS/IP infrastructures • New IP/Ethernet services over existing (PDH/SDH/ATM) networks • Carrier Ethernet access and aggregation for NGN
IPmux-L Product Line 2011 Slide 3

What is TDM Pseudowire?
• Pseudo = Simulated, Seemingly • Protocol for extending TDMcircuits over Packet Switched Networks (PSN) • 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
CE

GW

PSN
PW Tunnel #1 PW Tunnel #2

GW

TDM

TDM
Legacy Service

CE

Legacy Service

Pseudowire Emulation

IPmux-L Product Line 2011 Slide 4

How Does TDMPW Work?
TDM Frame TDM Frame

Ethernet/IP Packets Packet Switched Network

Ethernet/IP Packets

1. The synchronous bit stream is segmented 2. Headers are added to each segment to form the Packet

3. Packets are forwarded to destination over the PSN network
4. At destination, the original bit stream is reconstructed by removing headers, concatenating frames and regenerating the timingIPmux-L Product Line 2011 Slide 5

TDM Pseudowire – Main Benefits
• • • • • 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)
POP/HUB/COTDM Service

TDM Service

CE

Last Mile

PE

Packet Network

PE

Pseudowire

IPmux-L Product Line 2011 Slide 6

TDM PW – 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 functionalitiesSite/Building 1
PBX

Site/Building 2
PBX

Leased Line
E1/T1 E1/T1

GbE
LAN LAN

IPmux-L Product Line 2011 Slide 7

TDM PW – Main Challenges
• Throughput and Delay
– Controlling the PW bandwidth utilization and delay

• Fault Propagation
– Forwarding alarms between the native TDM network and the PSN

• Synchronization and Clock Distribution
– Enabling recovery of the TDM clock acrosspacket networks

• PSN Quality of Service
– Maintaining QoS for TDM services over the PSN
IPmux-L Product Line 2011 Slide 8

Market Trends
• Growing availability of PSN with QoS and traffic engineering in the WAN • Increase in fiber deployment to the business

• TDM PWE standards well established (not an emerging technology anymore)
• Carriers pressed to reduce OpEx of legacy leased lineservice:
– Use TDM PWE to migrate LL to packet infrastructure – Or terminate the legacy LL service (in this case end-customers may adopt TDM PWE in order to preserve legacy PBXs)

• 3G driving mobile transport network to packet, making TDM PWE natural choice for 2G/3G co-location • RAD market leader with best of breed TDM PW gateways

IPmux-L Product Line 2011 Slide 9

Customer Benefits...