Cisco Systems - VoIP Networking Designed_Slides.pdf

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VoIP
Networking
Design
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Tim Danford
tdanford@cisco.com
+1.978.244.8911
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Agenda
• Intended VoIP Applications
• VoIP Introduction
• Packet Networking Challenges
• Cisco QoS Toolkit
• Voice Network Design Issues
• Network Design Examples
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VoIP Gateway Applications
• PSTN gateway service
• Route replacement/toll bypass
Most common application
• PBX OPX “extension”
• H.323 interoperability
Supports voice-enabled Web applications
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Internet Telephony Service Provider
ISP “A”
Local
PSTN
Settlement Provider
(Trusted 3rd Party)
PSTN
Authentication, Call
Rou ting, Billing and
Settlement Server
V
QoS
Interconnect
(or Internet)
ISP “B”
POP (i)
ISP “A”
Backbone
ISP “B”
Backbone
V
Local
PSTN
Local
PSTN
V
PSTN
PSTN
POP (ii)
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Local
Local
Local
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