1. Designing Converged Networks
Ali Nezhad
Professor: Centennial College

2. Motivation
2
Before Now

3. Benefits
Cost Reduction
One network (installation / maintenance)
One group of staffs
Standardization
New Possibilities
Features that were not available before.
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4. Applications
Multimedia
Voice
Video
Interactive applications
Desktop sharing
…
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5. Challenges
Single Gateway: Internet
Special VoIP problems
Clarity of voice
E911
Fax
External power
TCP/IP shortcomings
Lack of QoS support
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6. Multimedia QoS Requirements
Minimum BW
Upperbound on Packet loss
Upperbound on Delay
Upperbound on Jitter
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7. QoS Strategies
Over provisioning
Redundancy
Traffic Separation (multiple VLANs)
Traffic Prioritization (multiple Queues)
QoS Protocols
 Traffic Classification
 IEEE802.1p, DiffServ, MPLS, IPv6
 Resource Reservation
 RSVP
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8. End-to-End QoS
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BW
Frame level QoS
Packet level QoS
RTP & UDP
OS and Processing, CODECs

9. Traditional Enterprise Network
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10. Voice over IP
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11. 11
VoIP Network

12. VoIP Gateway Protocols
H.323
SIP
 Mobility, Unified Communication, Fixed/mobile convergence
IAX
MGCP / MEGACO
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13. Credits
Google Images
Wikipedia
Ali Nezhad 13

14. Thank You
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