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. . . . Time Division Multiplexing (TDM )Voice Network . University of Michigan. PBX. Call Center. PSTN. IVR. Billing. Provisioning. . Voicemail. . . . . . Call Control. System Manager. Switching fabric. . University of Michigan. TDM Voice System Architecture. Centralized Services
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1. IP Telecommunication The Promises and the Challenges
2. Time Division Multiplexing (TDM )Voice Network
3. University of Michigan TDM Voice System Architecture Centralized Services & Infrastructure
Administration
Call control, Call Processing
Dial Plan
Billing
Voicemail
Call Centers
350+ Call Features
Carrier Termination Point
18Kft loop limit
4. University of Michigan TDM-Pros Matured technology
Standard based analog phone support
Meets 95% of user basic voice needs
Dedicated voice network
Meets regulatory requirements (E911, CALEA)
End to End Guaranteed Bandwidth
Reasonably Good Security
Support model in place
Management model well understood
Trained Staff
5. University of Michigan TDM-Cons Large capital investment in new cable plant
Costly environmental requirements ??
Centralized Redundancy ??
Maintain dual Physical Networks (Voice/Data)
Long lead time for new feature development
High cost for moves, adds and changes
Costly to add new lines and applications
Proprietary Signaling for enhanced phones
High cost for “One of a Kind” features
6. VOICE OVER INTERNET PROTOCOL
7. University of Michigan IP Telephony Building Blocks
10. University of Michigan
11. University of Michigan
12. University of Michigan
13. University of Michigan
14. University of Michigan
15. Campus Data Network Model
16. University of Michigan Nortel SIP Trial Production (50 users)
17. University of Michigan
18. University of Michigan Flexible Administrative Boundaries
Intelligent End Points
Single Dial Plan for Voice, Video and Collaborative Applications
Standard based Signaling Protocol
Codec Choices
End Point Choices
Call routing and feature control with user
Reduced raceway requirements
19. University of Michigan
20. University of Michigan
21. University of Michigan Location identity requirements
Integrated management
Training for support staff
Facilities and Environmental requirements
Centralized vs. Distributed Management Model
Centralized services (VM, database, L.D. LXC etc)
Maintaining existing Dial Plan
New business application