1. 1
State of SoftswitchState of Softswitch
October 2001October 2001
Tracy VentersTracy Venters
Director, Product ManagementDirector, Product Management
Sonus NetworksSonus Networks
tracytracy..ventersventers@@sonusnetsonusnet.com.com

2. 2
AgendaAgenda
What are we talking about and why is it
important?
Next Generation network components
Applications for the softswitch network
Application roll-out

3. 3
Rapidly Growing MarketRapidly Growing Market
Source: Synergy Research Group
Circuit Voice
(1.3)% CAGR
Packet Voice
89.5% CAGR
0
10,000
20,000
30,000
40,000
50,000
2001 2002 2003 2004 2005
$USMillions

4. 4
Free PC to
PC Calls
Free PC to
PC Calls
Future
Applications
Future
Applications
Packet Voice Becoming MainstreamPacket Voice Becoming Mainstream
Opportunity
Business
Access
Business
Access
TrunkingTrunking
Residential
Access
Residential
Access
Enhanced
Services
Enhanced
Services
Int’l Toll
Bypass
Int’l Toll
Bypass
Internet
Offload
Internet
Offload
Time

5. 5
All Major Carriers Are Moving To Packet VoiceAll Major Carriers Are Moving To Packet Voice
Next-Gens
IXCs
PTTs
ILECs
MSOs
CLECs

6. 6
Packet Voice ServicesPacket Voice Services
Economic ImperativeEconomic Imperative

7. 7
Softswitch OpportunitySoftswitch Opportunity
Cap and grow
Slow migration to packet voice in the growing regions and segments.
Enhanced services
Increase revenue by adding IP services to converged network clients.
Converged network
Reduce operational cost of managing two disparate networks.
Market adaptability
Roll out new services faster through build or buy strategy.

8. 8
Leverage Web Server DevelopmentLeverage Web Server Development
ModelModel
IP network infrastructure
Internet protocols (SIP, XTML, HTML, HTTP, etc.)
Open systems standards
Server platforms, development tools
Virtual armies of well-trained programmers
UNIX, C++, Java, PCs, Windows, etc.
Rapid service development and deployment
Test market first, then ramp at Internet scale

9. 9
Architecture ComparisonArchitecture Comparison
Services
Call Control
Switching
Circuit Switches
Call Control
Switching
Softswitch
Services &
Applications
Media Servers
Feature Servers
Application Servers
Media Gateway Controller
Softswitch
Media Gateway
Open
Standards
Open
Standards
• Proprietary solution
• Centralized functionality
• Expensive to adapt to
changes
• Open standards
• Multi-vendor solution
• Ease of service enhancements

10. 10
Feature Group D
(Co-Carrier) Trunks
Inter-Machine
Trunks (IMTs)
IXC1
IXC2
CLEC
Media GatewayMedia Gateway
SoftSwitch
Signaling
Gateway
EO
EO
EO
Packet
Network
SS7/C7
Class 4 TandemClass 4 TandemClass 4 TandemClass 4 Tandem

11. 11
Local
Access
Local
Access
Packet
Network
Media GatewayMedia Gateway
SoftSwitch
Signaling Gateway
SS7/C7
Long DistanceLong Distance

12. 12
Packet
Network
ISP1
ISP2
PBX
PRI
SoftSwitch
Signaling
Gateway
Media Gateway
SS7/C7
PSTN
Internet Call DiversionInternet Call Diversion

13. 13
Business Access SolutionBusiness Access Solution

14. 14
Residential AccessResidential Access
PSTN
Packet
Residential Services over xDSL
SoftswitchIP, DSL, Analog VoIP/Cable
Residential Services over Cable
PSTN Access
Policy Server
Signaling GW
Media GW

15. 15
PSTN
Packet
MGCP/xDSL
Business Services over xDSL
PSTN Access
IP CentrexIP Centrex
Legacy
PBX
Legacy
PBX
IP
Phone
IP PBX
Policy Server
Softswitch
Signaling GW
Media GW

16. 16
Packet Voice ServicesPacket Voice Services
EvolutionEvolution
Internet Call DiversionInternet Call Diversion
Toll/Tandem TrunkingToll/Tandem Trunking
Business PBX AccessBusiness PBX Access
Class 5 Business ServicesClass 5 Business Services
Class 5 Residential ServicesClass 5 Residential Services
Application
Time
Enhanced
Services
Enhanced
Services

17. 17
SummarySummary
Carriers have moved from:
Can you do that? to
How do you do that? to
When can you deliver?
There is still a huge opportunity.
It has be shifted by about year.
There are still hurdles to overcome.
TDM expectations and standards
The “Killer Apps”

18. 18
Thank You!Thank You!