Illy SaridSales Development
RAD Data Communications
18 - 22 May 2009CTICC, Cape Town,
SOUTH AFRICA
Smart power choicesfor Africa
www.rad.com
Agenda
• The Smart Grid
• Transport of next generation data over
existing networks
• Transport of legacy data over new networks
• Voice compression
• Summary
Smart Grid Solutions
Smart Grid = AutomationSmart GridSmart Grid = Automation =
Communications
Building the Smart Grid
• Eventually – the utility network will be
IP/MPLS
• Eventually – all network elements will be
Ethernet based
But in the meantime….
• We need to transport Ethernet over legacy
networks
• We need to support legacy data over IP/MPLS
Why Ethernet?
• New SCADA, telemetry and measuring
equipment… even teleprotection is based on
Ethernet data transmition
• Video surveillance
• VoIP
• Technician corporate network connectivity
• Management
• Smart meters
• Etc….
Ethernet over TDM
Supporting Ethernet
over existing network
• Legacy networks such as E1 & SDH are
originally designed for voice
• New technologies enable efficient transport of
Ethernet data over these networks
The problem..
• Native Ethernet connectivity is not always
available
• Existing multiplexers and ADMs don’t always
have Ethernet I/O ports
The Solutions:
• Standard based media converters for
– Ethernet over PDH (NG-PDH)
– Ethernet over SDH
– Ethernet over copper
• Forklift upgrade
n x E1
Fast & Efficient Ethernet Rollout
• QoS per service - Assures circuit reliability
GbE
Central office
SDH
Sub-Station
PDH Mux
ETHn x E1
Analog RTU
Sub-Station
ETH
NMSVoIP
Data
NMSVoIP
DataSTM-1
• GFP/VCAT/LCAS - low latency, higher throughput and
interoperability
Utilizing Existing Infrastructure
• Extending life of radios by enabling transition from
TDM to Ethernet
• Bundles up to 16 E1 (32Mbps)
ETH
PDH-radio
n x E1ETH n x E1
ETH
SDH-radio
ETH
STM-1STM-4
STM-1STM-4
ETH
Multiservice platforms
• Scalable solutions
• Ethernet and TDM over same
network
STM-1GbE
HeadquarterRouter
X.21V.35
E1/T1
E1/STM-1
SDH
Sub-StationAnalog RTU
Digital RTU
E1
Sub-StationAnalog RTU
Digital RTU
Sub-StationAnalog RTU
Digital RTU
E1
ETH
ETH
Smart Meter Data Collection
POP
SDH
Central SiteGbE
GbE
POPBPL
FE
Wimax
FE/GbE
xDSL
n x E1
E1
STM-1STM-4
STM-1STM-4
STM-1 POP
Smart Meter Data Collection
• Mostly done by Wireless
• Aggregated at a regional POP
Then…
• Needs to be backhauled over existing SDH
network
• Also, Ethernet based technoligy
ETH
E1
ETH
ETH
Pumping Station
Data transport over “Dark” Infrastructure
with Central Site Aggregation
Control Room
Control Room
CCTV
Fiber
108 Mbps
Copper
2Mbps
n x E1
n x ETH
STM-1
GbE
E1
V.3
5
RS-232
RTU
RTUCopper
22.8 Mbps
Fiber
108 Mbps
• E1/Ethernet over fiber using standard SHDSL
• No standard for E1 over fiberPBX
TDM over IP
Pseudowire
Supporting TDM over IP
• Ethernet/IP networks originally designed for
data
• New technologies enable transport of TDM
circuits over IP or Ethernet
Pseudowire Technology -
Circuit Extension over ETH
• 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
transparently
Pseudowire Standards
Application Standard IETF ITU-T MEF
TDM PW TDMoIP RFC 508 Y.1413,
Y.1453,
Y.1414,
Y.1452
MEF 8
CESoPSN RFC 5086 Y.1413,
Y.1453
MEF 8
SAToP RFC 4553 Y.1413,
Y.1453
MEF 8
HDLCoPSN HDLC transport Ietf-pwe3-
tdmoip
None None
ATMoPSN ATM service
transport
ietf-pwe3-atm-
encap
Y.1411
Y.1412
None
Savings on new radios
• Saving cost by using new Ethernet radios
• Transparent to all services
• Eliminates needs for dual networks
Ethernet radio
SCADA
ETH
Router
ETH
SCADA
Router
Resilient Ethernet Ring
LAN
E1
PBXPBX
LAN
E1
GigabitRing
• High Bandwidth
• Multi service
• Resilient
Voice optimization
Voice trunking
PBXE1 PRI
ETH E1 PRI
Remote/Mobile PlatformsHeadquarters / Control Center
ETH
2-wayRadio
LAN
Fishing Vessel
PBX
E&M
Phones
LAN
E&M
LAN
E&M TrunkingSystem
BroadcastingVan
Oil/GasPlatform
Voice optimization
• Voice trunking, not Voice switching
• Up to 60% bandwidth saving compared to VoIP
• Works over E1 or IP circuits
• Transparent to PBX signaling
E1
E1
Summary
• New technologies enable efficient use of
existing infrastructure for new and old
services
• Smoother migration to IP
• Cost saving solutions
Visit us at the RAD booth - 124