1. Voice over IP and Convergence Tennessee Digital Government Summit May 2, 2006 Derek C. Carver Assistant Director, ITS Nashville Metro Government

2. Terminology VoIPPRIPBXMACsBCM Key System TDMCentrex/EssexPSTNSONET

3. Benefits of VoIP Reduced Operating Costs & Improved Efficiency Moves, Adds, and Change costs decrease. Moves, Adds, and Change costs decrease. Centralized Administration Centralized Administration Consolidation of telephone circuits (PRI’s, T-1’s, etc.) Consolidation of telephone circuits (PRI’s, T-1’s, etc.) Platform for New Applications – possibilities include: Desktop Messaging Desktop Messaging Global Address List Global Address List Video Conferencing Video Conferencing Support for XML-based applications Support for XML-based applicationsMobility Wireless IP sets – decrease cell phone use, increased accessibility. Wireless IP sets – decrease cell phone use, increased accessibility. “Soft” phones on Desktop or Laptop computers “Soft” phones on Desktop or Laptop computers Protecting our Investments Choosing a VoIP solution improves the data network foundation towards 99.999% reliability. Choosing a VoIP solution improves the data network foundation towards 99.999% reliability. The major manufacturers of Telecommunications Equipment are only funding research and development for VoIP Solutions. The major manufacturers of Telecommunications Equipment are only funding research and development for VoIP Solutions. VoIP is an important part of the convergence of computers and telephones into a single, integrated, information environment. VoIP is an important part of the convergence of computers and telephones into a single, integrated, information environment.

4. Challenges of VoIP Leveraging Metro’s Resources For most Enterprises, deploying VoIP technology is challenging due to: Limitations of the current data and voice infrastructures. Limitations of the current data and voice infrastructures. Insufficient LAN/WAN bandwidth. Insufficient LAN/WAN bandwidth. Costs of replacing existing telephony hardware. Costs of replacing existing telephony hardware. Shallow telephony knowledge. Shallow telephony knowledge. Metro’s SONET backbone provides a robust, resilient, and versatile data foundation for VoIP. SONET was developed for Voice and Video Applications. SONET was developed for Voice and Video Applications. Data network for voice only (no contention for service) Data network for voice only (no contention for service) PRI’s across Metro SONET will reduce PRI costs. PRI’s across Metro SONET will reduce PRI costs.

5. VoIP Evaluation & Trial ITS “eats it’s own dog food” Evaluating Vendors Reviewed VoIP products and created evaluation matrix Reviewed VoIP products and created evaluation matrix Trial Technology ITS deployed VoIP telephones within our own department. ITS deployed VoIP telephones within our own department. Trial for soft phones and wireless handsets also. Trial for soft phones and wireless handsets also.

6. Trial Matrix

7. Metro Network Overview

8. Metro Telephony Infrastructure Centrex – Most Metro Locations Option 81 – Howard Office Building Option 11 – 222 Building BCMs – Metro Center Key Systems – Various locations

9. Metro Main PBX

10. VoIP Locations 8/06 Juvenile Justice Center (235) Metro Office Building (300) Metro Southeast (250) Justice A.A. Birch Building (500) Howard Office Building (120) Historic Courthouse (400)

11. SONET PRI Locations North Police Precinct (70) Hermitage Police Precinct (85) South Police Precinct (70) Davidson County Sheriff’s Office (100) Domestic Violence (45) 222 Building (350)

12. VoIP and SONET PRI VoIP Phones – 1,805 PRIs – 720 Total Converged phones – 2,525

13. Success Stories Metro Tax Assessor HOB Katrina Flood San Antonio Travel Metro Advantages MACs MACs PRIs on SONET PRIs on SONET GAL GAL Desktop Messaging – Voice Mail, Fax, etc. Desktop Messaging – Voice Mail, Fax, etc. Softphone Softphone Wireless phone Wireless phone

14. Q&A Time Questions?