Migration Of Broadcasting to
Next Generation Networks
Presented by:
Motty Anavi
VP of Business Development
Agenda
• Challenges in migrating to Next Generation networks
• Technology enablers
• Standards
• Applications
• Summary
PW Broadcast 2010 Slide 2
Traditional Broadcast Telco Use
ISDN
ISDN
CODEC
CODEC
T1
TDM Network
POTS
T1
POTS
• Broadcast is encoded digitally
• Transferred via either:
• Digital telco transmission line
• Built-in modem to POTS line
PW Broadcast 2010 Slide 3
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
PW Broadcast 2010 Slide 4
The Changing Landscape
ISDN
?
?
ISDN
TDM
PSN Network
CODEC
T1
?
? T1
POTS
?
? POTS
CODEC
• How can EXISTING broadcast equipment be maintained
using the new PSN?
PW Broadcast 2010 Slide 5
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
PW Broadcast 2010 Slide 6
What is a Pseudowire (PW)?
PSN Network
ATM VCC
PW Gateway
PW Gateway
ATM VCC
HDLC
HDLC
TDM
TDM
PW Broadcast 2010 Slide 7
PW Switching- IP/ETH
1. User services are mapped to PW
VCC/T1
PW-Label
2. IP headers added
T1-TDM
VCC/T1
PW-Label
Switching is
done according
to the IP
addresses
T1-TDM
IP Header
PW Gateway
VCC
PW Gateway
ETH
ETH
IP/ETH
Network
VCC
VCC
VCC
3. The IP Header is stripped
VCC/T1
PW-Label
IP Header
4. PW label mapped back to
user services
VCC/T1
PW-Label
PW Broadcast 2010 Slide 8
PW Switching – MPLS/ETH
1. User services are mapped to PW
VCC/T1
Switching is
done according
to the Tunnel
Label
PW-Label
2. Tunnel Label added
T1-TDM
VCC/T1
PW-Label
T1-TDM
Tunnel Label
PW Gateway
VCC
PW Gateway
ETH
ETH
VCC
MPLS
VCC
VCC
3. The Tunnel Label is stripped
VCC/T1
PW-Label
Tunnel Label
4. PW Label mapped back to
user services
VCC/T1
PW-Label
PW Broadcast 2010 Slide 9
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)
TDM
Service
PW Gateway
Packet
Network
PW Gateway
TDM
Service
Pseudowire
PW Broadcast 2010 Slide 10
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
T1
T1
CODEC
CODEC
POTS
PSN Network
POTS
PW Broadcast 2010 Slide 11
PW Broadcast 2010 Slide 12
TDM Pseudowire Services
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
ETH/IP/
MPLS
Network
ETH
PW Broadcast 2010 Slide 13
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
Framing Sync
ETH/IP/
MPLS
Network
ETH
Framing Sync
PW Broadcast 2010 Slide 14
TDMoIP Payload Size
ETH
IP
UDP CW
CRC
TDM/HDLC Payload
• TDMoIP Unframed/Framed payload size is between 48-1440 bytes
n x 48 bytes (where n=1,2,3,……,30)
• CESoPSN & SAToP payload size is between 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=mxN
• HDLCoIP mechanism monitors the data stream until a frame (data) is
detected (flag)
PW Broadcast 2010 Slide 15
Pseudowire Standards
Standard
Application
IETF
ITU-T
MFA
TDMoIP
TDM circuit emulation
ietf-pwe3-tdmoip
Y.1413, Y.1453,
Y.1414, Y.1452
IA 4.0
CESoPSN
TDM circuit emulation
ietf-pwe3cesopsn
Y.1413, Y.1453
IA 8.0
MEF 8
SAToP
TDM circuit emulation
RFC4553
Y.1413, Y.1453
None
MEF 8
HDLCoPSN
HDLC transport
RFC4618
None
None
None
ATMoPSN
ATM service transport
RFC4717
Y.1411, Y.1412
None
None
FRoPSN
Frame Relay service
emulation
RFC4619
X.84
None
None
IA 5.0
MEF
MEF 8
• RAD is actively involved in most of the standardization bodies
PW Broadcast 2010 Slide 16
Extending TDM via Ethernet Radio
Transmitter Location
Distribution Center
T1
PW
Gateway
Ethernet
Microwave Link
ETH
ETH
PW
Gateway
T1
• 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
PW Broadcast 2010 Slide 17
Distributing Content over IP
Remote Station
Distribution Center
POP/HUB/CO
PWE Gateway
T1
ETH
ETH/IP/
MPLS
Network
PW
Gateway
T1
Remote Station
• Large PW gateway in Center
• Has the capability to break-up
a single T1 or send multiple T1s
ETH
PW
Gateway
T1
• IP/MPLS network is more cost
effective when going long distances
• Fully redundant central site solution
PW Broadcast 2010 Slide 18
TDM Pseudowire Product Line
Products
Ethernet Service
Network Link
Standards
1 x T1/E1, 1 x T3/E3
Provided by the host switch
Provided by the
host switch
CESoPSN
SAToP
4 x FXS/FXO/E&M
1 user port
Rate limit (optional)
1 UTP/Fiber Fast
Ethernet
TDMoIP
1x FE
UTP/SFP
TDMoIP
CESoPSN
SAToP
2 x FE/GE, UTP/SFP
TDMoIP
CESoPSN
SAToP
4 GbE ports (UTP or
SFP) with LAG
SAToP
2 UTP or SFP GE
TDMoIP
CESoPSN
SAToP
TDM Service
MiTOP
IPmux-1E
4 x BRI
IPmux-2L /4L
1/2 /4 x E1
Nx64 serial port (2L only)
IPmux-24
1/2/4 x T1/E1
2 x User
- Rate limiting
- VLAN tag+stack
1 x User, 1 x Net/User
- Rate limiting
IPmux-216
8 or 16 x T1/E1
- VLAN tag+stack
- MEF 9&14 EPL
IPmux-155L
2 x STM-1
Gmux-2000
196 x T1/E1 or
2 x C.OC-3/STM-1 or 7 x
C.T3
32 FE user ports (UTP or
SFP)
FE Management
PW Broadcast 2010 Slide 19
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!
PW Broadcast 2010 Slide 20
Thank you
for your attention
www.rad.com
PW Broadcast 2010 Slide 21