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Voice Over IP For Light Rail Communications Systems - PowerPoint PPT Presentation


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2007 APTA Rail Conference. Voice Over IP For Light Rail Communications Systems. Chris Bosse, PMP Stantec Consulting, Inc. Senior Systems Consultant. 2007 APTA Rail Conference. IP Services For Light Rail. Landline Voice Services . Radio. 2007 APTA Rail Conference. VoIP Basics.

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Voice Over IP For Light Rail Communications Systems


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    Presentation Transcript
    1. 2007 APTA Rail Conference Voice Over IP For Light Rail Communications Systems Chris Bosse, PMP Stantec Consulting, Inc. Senior Systems Consultant

    2. 2007 APTA Rail Conference IP Services For Light Rail Landline Voice Services Radio

    3. 2007 APTA Rail Conference VoIP Basics • IP Network • Telephony Switch(es) • Telephones

    4. 2007 APTA Rail Conference VoIP Basics – IP Network • Ethernet over SONET • Carrier Ethernet (GigE) • VPN over DSL(Leased) • MPLS, RPR • 1.5 Mbps – 10 Gbps backbone rate • 5 – 100 kbps per call • DESIGN • KEYS • Low Latency • QoS Assurance • Fast Re-route • Link Bandwidth

    5. 2007 APTA Rail Conference VoIP Basics – Switch(es) • Traditional PBX • Hybrid PBX • IPBX • Call Manager • Hosted Services • DESIGN • KEYS • Standards Based • Interoperability • Easy MAC’s • Management • Redundancy • PSTN Interface

    6. 2007 APTA Rail Conference VoIP Basics – Telephones • IP Telephone • Softphone • Analog / Digital sets and FAX (w/ conversion) • DESIGN • KEYS • Standards Based • Power • Security • Features

    7. 2007 APTA Rail Conference Native IP Configuration IP Phone Analog Phone Wireless Access Point FAX PSTN T1, PRI VoIP Converter Analog Phone Hub / Switch Hub / Switch / IPBX Gateway IP NETWORK ETHERNET VoIP Server / Softswitch / Call Manager(s) Fiber Optic Media Converters IP Phones VoIP Converter IP Phone’s Softphone Emergency Telephone

    8. Hub / Switch IP NETWORK 2007 APTA Rail Conference IP Conversion Configuration Analog Phone VoIP Converter FAX Wireless Access Point PSTN FXS PABX VoIP Converter T1, PRI FXO Hub / Switch Analog Phones VoIP Gateway Fiber Optic Media Converters PBX Stations (non-IP) VoIP Converter Emergency Telephone

    9. 2007 APTA Rail Conference VoIP Challenges for Light Rail • Standards (Rail) • Emergency Telephone Service • Quality of Service • Security • Interoperability • Remote Wayside Power

    10. 2007 APTA Rail Conference VoIP Benefits • Voice/Data convergence • Network efficiency • Scalable initial CAPEX • Bring maintenance in-house • Greatly simplify network cabling • Reduce equipment footprint • Consolidate maintenance skill sets • Streamlined disaster recovery & backup • Advanced IP phone applications

    11. 2007 APTA Rail Conference 2007 APTA Rail Conference Case Study – Sound Transit Seattle, WA Spanning Tree Protocol blocks redundant link until primary failure Primary Link COMM NODE B COMM NODE A ETEL Passenger Emergency Phone Emergency Phone

    12. 2007 APTA Rail Conference Case Study – RTD Denver, CO

    13. 2007 APTA Rail Conference Case Study – Tri-Met Portland, OR

    14. 2007 APTA Rail Conference Case Study – Valley Metro Phoenix, AZ Station GigE Node To Next GigE Node To Next GigE Node Ethernet Switch Wayside Substation, Signals Facilities 10/100BaseTX VoIP Gateway PA/VMB Controller VoIP Gateway Other Data CCTV FXS FXS TVM SCADA Emergency Call Boxes Analog Telephones

    15. 2007 APTA Rail Conference Chris Bosse Stantec Consulting, Inc. 105 Decker Court – Suite 810 Irving, TX 75062 (972) 650-6166