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UTStarcom Confidential 1
NGN Introduction
Soft Switching
Claudio Claudio FiorentiniFiorentiniCountry Manager Country Manager ItalyItaly
Francisco PrietoFrancisco PrietoNGN Solutions Manager NGN Solutions Manager EMEAEMEA
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2UTStarcom Confidential
Agenda
• Evolution from TDM to NGN
• UTStarcom Architecture
• Tiscali IOT environment
• Tiscali UTStarcom Solution Topology
• NGN UTStarcom Solution Benefits
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3UTStarcom Confidential
Traditional Telephone Networks
• Commonly referred to as PSTN.
– Public Switched Telephone Network.
• PSTN Network composed of:
– Access devices.
– Switching.
– Transport.
Access AccessSwitching SwitchingTransport
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4UTStarcom Confidential
Generic Switch Architecture
Signaling
CallProcessing
SwitchingMatrixPr
oprie
tary
, Clo
sed
Envi
ronm
ent
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5UTStarcom Confidential
What is a Soft Switch?
Voice switching platform built in a distributed architecture, based on open standard interfacesbetween its components and supported by actual TDM (PDH/SDH) and packet switching transport networks (IP).
• Performs the same functions as legacy PSTN Switches, but in a more flexible, economic and open architecture.
• Softswitches leverage the actual data network technologies for transporting voice media and signaling.– Voice – VoIP (RTP/RTCP).
– Signaling – MGCP, MEGACO, SIGTRAN, SIP, SNSP, etc.
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6UTStarcom Confidential
Legacy - NGN Evolution
Signaling
Call Processing
Switching Matrix
LE LESS7 SS7
Voice Voice
E1’s E1’s
Signaling
Call ProcessingLE LEVoice Voice
SS7 SS7
E1’s E1’s
MG MGIP
MEGACOMEGACO
VoIP(RTP)
VoIP(RTP)
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7UTStarcom Confidential
Legacy - NGN Evolution
IP
Signaling
Call ProcessingLE LE
SS7 SS7
Voice Voice
E1’s E1’s
MG MGIP
MEGACOMEGACO
VoIP(RTP)
VoIP(RTP)
SIGTRAN(M3UA)
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8UTStarcom Confidential
Legacy Switch vs. Softswitch
Signaling
CallProcessing
Switching
Prop
rieta
ry, C
lose
d En
viro
nmen
t
Ope
n, S
tand
ard
Inte
rfac
es
Signaling
CallProcessing
Media Gateways
• Monolithic
• Proprietary
• Expensive
• Dependant
• Distributed
• Open Interfaces
• Scalable
• Vendor independent
• Convergence
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9UTStarcom Confidential
Distributed Softswitch Model
Signaling Gateway
(SG)
Media Gateway Controller(MGC)
Media Gateways
(MG)
SIGTRANMGCP
MEGACOH.248
PacketInterface
PSTN
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10UTStarcom Confidential
mSwitch Architecture
• Logically, mSwitch architecture consists of 4 layers:
IP Network
Access LayerAccess Layer(Gateways)(Gateways)
Control LayerControl Layer
Service/Application Layer
SNMS/mBOSS Layer
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11UTStarcom Confidential
mSwitch R6 Network Architecture
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12UTStarcom Confidential
TISCALI IOT Environment
SSP CagliariPC=0-124-0
Micro VAX
iUMG A
CS-P/CS-G/CPSPC=0-144-4
IMT CIC 1-31
Link TS16
LSET x
H.2
48St
andb
y
Act
ive
RTPStandby
Active
Stan
dby
SIG
TRA
NA
ctiv
e
Link TS16LSE
T x
SSP RomePC=0-27-7
Micro VAX
SIGTRAN
H.248
RTP
Link TS16LSE
T x
SSP MilanoPC=0-28-0
Micro VAXiUMG B
SIGTRANH.248RTP
IP
iUMG C
IMT CIC 33-63
IMT CIC 1-31 IMT CIC 33-63
IMT CIC 1-31IMT CIC 33-63
SCP
SRF
PC=0-64-6
PC=2-87-0
PC=x-yy-z
SCP
PC=0-63-7
RASDial up
E1 PRI
SRF
PC=1-460-1
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13UTStarcom Confidential
TISCALI UTStarcom Solution Topology
IP transport network
Other Carriers TDM Switches
C-TGiUMG
N POPs in total
(> 400 DPCs, > 500 links)
CS-P
SS7 F links
SS7 F-links
IN SCP
INAP/E1
High Density POPs
New Low Density POPs
SG
(SEP)
SS7/M2UA
SS7/M3UA
H.248
CPS
(Milano CO)
IN SRF
ISUP/E1
CS-P
IN SCP
INAP/E1
SG
(SEP)
SS7/M3UA
CPS
(Roma CO)
IN SRF
ISUP/E1
H.248SS7/M2UA
Primaryconnections
Secondaryconnections
Other Carrier TDM Switches
iUMG
SS7 F links
{Milano CO and Roma CO are two geo. Redundant sites. Each can handle the entire network.}
Other Carriers TDM Switches
SS7 F links
iUMG
iAN8000
MSAN
iAN8000MSAN
UTSI IN SCP
UTSI IN SCP
Other Carriers TDM Switches
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14UTStarcom Confidential
Benefits
• Increase the granularity and power processing distribution of the Network
– Low density interconnection
– Signaling, Media and IN capabilities distributed or concentrateddepending on carrier needs
• One Network– Reduction planning and engineering time– Reduction maintenance and operation costs
• Transport– Eliminate the need of internal E1 – Reduction bandwidth needed – Reduction maintenance and operation costs
• Organization– UTStarcom solution implemented in a common platform allow to focus
on services instead of networks
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15UTStarcom Confidential
GrazieGrazie