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“DUAL-MODE” WIRELESS TELEPHONY: THE CONVERGENCE OF VoIP + WI-FI + CELLULAR

“DUAL-MODE” WIRELESS TELEPHONY: THE CONVERGENCE OF VoIP + WI-FI + CELLULAR. ERIC BLAUFARB Marketing Manager Wireless Networking Business Unit Cisco Systems EDUCAUSE October 19 th , 2004. Agenda. What is Driving VoIP & Cellular convergence What is “Dual-Mode” Wireless Telephony?

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“DUAL-MODE” WIRELESS TELEPHONY: THE CONVERGENCE OF VoIP + WI-FI + CELLULAR

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  1. “DUAL-MODE” WIRELESS TELEPHONY:THE CONVERGENCE OF VoIP + WI-FI + CELLULAR ERIC BLAUFARB Marketing Manager Wireless Networking Business Unit Cisco Systems EDUCAUSE October 19th, 2004

  2. Agenda • What is Driving VoIP & Cellular convergence • What is “Dual-Mode” Wireless Telephony? • Cisco influence on “Dual-Mode” • Technical Challenges

  3. Market Growth:IP Telephony & Wireless LAN IP Telephony Growth IP PBX Lines – U.S. 30M 20M 10M 0 1999 2000 2001 2002 11% 2003 20% 2004 30% 2005 43% 2006 58% % IP Phones  Source: Phillips Infotech, 2002 Wireless LAN Growth $Billions Source: Forward Concepts, 2003

  4. Dual-Mode in Different Environments • Home – As reliability for VoIP increase through providers such as Vonage the expectation is WLAN is a logical extension – Linksys to leverage technology • Enterprise Campus – As wired VoIP infrastructures become pervasive and dual mode cellular becomes a “non-purchase decision” organizations will logically begin to support VoIP over WLAN as an inexpensive mobility enhancement • Small Business / Branch Office – Branch office provides the greatest benefit for VoIP convergence and WLAN/VoIP integration. Decrease the complexities of wired networks , drives down OPEX & CAPEX costs provides increased facility flexibility & provides greater freedom for employees • Hotspots – Least likely to have immediate benefits from VoIP/WLAN convergence

  5. Dual-Mode Wireless Telephony:Value Proposition – Education • Dual-mode cellular phones expected to be upgraded more often than desktop PBX phones • Extra expense for enterprise calls received while off-campus (these calls will be automatically routed over the cellular network instead of going to your PBX voicemail) • Mobility (a cordless phone for the office) • Fewer devices to carry around • Enhanced in-building wireless coverage • Lowered OPEX costs • Increased Productivity, Increased Responsiveness • Largest Deployments are University Medical Centers (cellular restrictions) • Increase University Public Safety • Access to voice supplementary services and integrated data applications Corporate Directory Calendar Instant Messaging • Single wired/wireless network for voice & data (reduced IT costs)

  6. Single-Mode vs. Dual-Mode Phones Dual-Mode (Wi-Fi + Cellular) Single-Mode (Wi-Fi only) • Future • Can be used both inside and outside the enterprise • Available today • Provides mobility within campus environmnets • Where will these products fit within your organization? • Single mode = Vertical applications • Dual Mode = Standard Horizontal • Dual mode devices drive infrastructure deployments • User driven adoption less demanding as alternative technology is in place • CAPEX justification and applications will drive adoption

  7. “Dual-Mode” Wireless Telephony Evolution WLAN + IP Telephony WLAN VoIP Telephony Dual-Mode Wireless Telephony Traditional Cellular

  8. Breakthrough Form FactorsDual Mode Wi-Fi & Cellular Integration • http://www.cisco.com/go/ciscocompatible/wireless Q4/04 Nokia 9500 Communicator 802.11b CCX for Data

  9. Cisco Compatible Extensions VoWLAN Features Available Today (CCX v2/v3): • Fast Secure Layer 2 Roaming (LEAP, EAP-FAST) • Fast Secure Layer 3 Roaming (LEAP, EAP-FAST) • Transmit Power Sync • Reduces interference, Improves talktime • Proxy ARP Information Element • Improves standby battery life • Pre-standard QoS Roadmap(CCX v4): • WMM Standards-based QoS • Call Admission Control • Troubleshooting Tools • UPSD • Improves talktime battery life • Fast Secure Roaming with additional EAP types These features are included in CCX

  10. Voice Enhancements UPSD TSPEC CAC Voice Matrix CCX v2.0 v3.0 CCX v4 Features Security • PEAP with EAP-GTC • Standard TKIP with LEAP and PEAP/GTC • EAP-FAST • CCKM with EAP-FAST • AES • CCKM with TLS, PEAP-GTC, PEAP-MS-CHAP • Network Admission Control • EAP-FAST Enhancements Performance and Management • AP-assisted roaming • Fast 802.1X reauthentication • Radio environment reporting • Transmit power control • CCX version control • Single Signon • Proxy ARP • L2 Roaming Enhancements • Client Enhancement VLANs and QoS • Multiple SSIDs/VLANs on AP • Pre-standard eDCF • WiFi QoS WME • SSIDL/MBSSID

  11. 802.11 Voice Client Dual-Mode 802.11Cellular Phone PDA/Phone Data Collection Device with Softphone 802.11 Phone Multiple Products Multiple Form Factors Multiple Vendors All Made “Cisco-Compatible” through CCX Desktop IP Phone with 802.11 Ethernet Client Laptop with Softphone In the Future, There Will Be Many VoWLAN Devices

  12. Technical Challenges Security Mobility Battery Life Call Quality

  13. Centralized Servers ACS CiscoWorks WLSE Edge Switches Cat 6500 Series WLSM Wireless Access Points BR1300 AP1200 AP1100 Cisco-brand & Cisco-Compatible Clients What are the requirements to support VoIP convergence? Cisco SWAN • Good Voice Quality • Security • Fast Roaming • Ubiquitous Coverage • Scalability • Long Battery Life • Troubleshooting Tools • Minimal RF Interference Switches ONE NETWORK • Voice + Data • Wired + Wireless • Enterprise Features

  14. Fast Secure Layer 2 Roaming Central Authentication Server Security + Mobility + Call Quality WAN Link *WDS *WDS = Wireless Domain Server (Local Authentication Server + Access Point)

  15. Fast, Secure L3 RoamingRequired service for reliable VoIP 1. APs and clients authenticate via central WLSM Module CiscoWorks WLSE 2. Clients securely Fast Layer 3 roam (<50 ms handoff times) 3. Support >300 AP’s 4. Support >2000 VoIP clients CiscoSecure ACS RM RM RM 10.1.1.1

  16. Cisco White Paper:“Cisco Wireless IP Phone 7920 Deployment Recommendations” http://wwwin.cisco.com/eag/wnbu/tech_resources/white_papers.shtml Deploying VoWLAN:Recommendations & Best Practices To run voice over your WLAN, now or in the future, here are some things to consider as you design/deploy your WLAN network: • VLANs – Voice should be on a separate VLAN from data • AP Coverage – VoWLAN phones, which are used while the user is in motion, can expose coverage “holes” • Interference – Voice apps won’t perform well if there is a lot of AP-to-AP interference, so a good site survey is important • Capacity – To ensure sufficient voice call capacity, plus support data traffic, you may need more AP’s, and will want to use 56 Mbps protocols like 802.11a & 802.11g • 802.11a Upgradability – Many future VoWLAN devices will use .11a or .11a/b/g radios (more capacity, more channels), so be sure your network can be upgraded to 802.11a/b/g

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