Issues in Voice over IP A Manufacturer

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Issues in Voice over IPA Manufacturers
Perspective

• Martin Riebl
• Siemens AG

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Evolution in VoIP technology
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VoIP as Internet application

• Drivers for VoIP application
• end-user perspective
• price
• Service provider
• Niche on huge voice market
• Low cost entry solution
• Internet application without impact on
  infrastructure / access
• Service characteristics
• Unmanaged internet application
• Unregulated service

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Future evolution in VoIP technology
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Changing environment ...
Infrastructure Broadband access QoS
enabled Wholesale enabled Security
Regulation Lawful interception Emergency
call Local number portability ......
Carrier Participate in value chain Create value
to end customers Wholesaling to service/appl.
providers
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Common NGN Control Architecture
Applications
Real-time applications - e.g. IP Centrex
Non-real-time applications - e.g. unified
messaging
Application Enabling
Presence manager Announcement/dialog server
Session Resource control
Legacy interworking
Legacy Infrastructure (PSTN, PLNM)
Call / session control
QoS control
Central DB
Trunk Gateways
Clients.
IP phones
PC / PDA client
CPG / IAD
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Distributed architecture according TISPAN IMS
Applications

• TISPAN IMS architecture advantages
• Open architecture, standard based protocols and
  interfaces
• Service differentiation applications separated
  from session control
• Carrier owns user data (HSS) - basis for
  wholesaling
• Platform for fixed/mobile converged solutions
• One-step provisioning, single sign-on
• Large CPE portfolio available today
• IP phones, CPG/IAD, PC/PDA clients
• Due to stable SIP standards

Application Enabling
Session Resource control
Legacy i/w
PSTN
Trunk Gateways
Clients.
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TISPAN IMS Reference Architecture