1. 1 © 2004 Cisco Systems, Inc. All rights reserved. In-Building Wireless Conference – Feb.’04 “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

2. 222 © 2004 Cisco Systems, Inc. All rights reserved. In-Building Wireless Conference – Feb.’04 Agenda What is Driving VoIP & Cellular convergence What is “Dual-Mode” Wireless Telephony? Cisco influence on “Dual-Mode” Technical Challenges

3. 333 © 2004 Cisco Systems, Inc. All rights reserved. In-Building Wireless Conference – Feb.’04 Market Growth: IP Telephony & Wireless LAN Wireless LAN Growth IP Telephony Growth IP PBX Lines – U.S. 0 10M 20M 30M 1999200020012002 11% 2003 20% 2004 30% 2005 43% 2006 58% Source: Phillips Infotech, 2002 % IP Phones  Source: Forward Concepts, 2003 $Billions

4. 444 © 2004 Cisco Systems, Inc. All rights reserved. In-Building Wireless Conference – Feb.’04 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. 555 © 2004 Cisco Systems, Inc. All rights reserved. In-Building Wireless Conference – Feb.’04 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. 666 © 2004 Cisco Systems, Inc. All rights reserved. In-Building Wireless Conference – Feb.’04 Single-Mode vs. Dual-Mode Phones Available today Provides mobility within campus environmnets Future Can be used both inside and outside the enterprise 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 Single-Mode (Wi-Fi only) Dual-Mode (Wi-Fi + Cellular)

7. 777 © 2004 Cisco Systems, Inc. All rights reserved. In-Building Wireless Conference – Feb.’04 “Dual-Mode” Wireless Telephony Evolution Dual-Mode Wireless Telephony WLAN + IP Telephony WLAN VoIP Telephony Traditional Cellular

8. 888 © 2004 Cisco Systems, Inc. All rights reserved. In-Building Wireless Conference – Feb.’04 Breakthrough Form Factors Dual Mode Wi-Fi & Cellular Integration http://www.cisco.com/go/ciscocompatible/wireless Q4/04 Nokia 9500 Communicator 802.11b CCX for Data

9. 999 © 2004 Cisco Systems, Inc. All rights reserved. In-Building Wireless Conference – Feb.’04 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. 10 © 2004 Cisco Systems, Inc. All rights reserved. In-Building Wireless Conference – Feb.’04 CCX v2.0 v3.0 CCX v4 Features Voice Enhancements UPSD TSPEC CAC Voice Matrix 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 VLANs and QoS Multiple SSIDs/VLANs on AP Pre-standard eDCF WiFi QoS WME SSIDL/MBSSID 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

11. 11 © 2004 Cisco Systems, Inc. All rights reserved. In-Building Wireless Conference – Feb.’04 In the Future, There Will Be Many VoWLAN Devices Desktop IP Phone with 802.11 Ethernet Client 802.11 Phone PDA/Phone Laptop with Softphone 802.11 Voice Client Data Collection Device with Softphone Dual-Mode 802.11 Cellular Phone Multiple Products Multiple Form Factors Multiple Vendors All Made “Cisco-Compatible” through CCX Multiple Products Multiple Form Factors Multiple Vendors All Made “Cisco-Compatible” through CCX

12. 12 © 2004 Cisco Systems, Inc. All rights reserved. In-Building Wireless Conference – Feb.’04 Technical Challenges Security Call Quality Mobility Battery Life

13. 13 © 2004 Cisco Systems, Inc. All rights reserved. In-Building Wireless Conference – Feb.’04 What are the requirements to support VoIP convergence? Good Voice Quality Security Fast Roaming Ubiquitous Coverage Scalability Long Battery Life Troubleshooting Tools Minimal RF Interference Centralized Servers CiscoWorks WLSEACS Switches Edge SwitchesCat 6500 Series WLSM Wireless Access Points AP1200AP1100 BR1300 Cisco SWAN Voice + Data Wired + Wireless Enterprise Features ONE NETWORK Cisco-brand & Cisco- Compatible Clients

14. 14 © 2004 Cisco Systems, Inc. All rights reserved. In-Building Wireless Conference – Feb.’04 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. 15 © 2004 Cisco Systems, Inc. All rights reserved. In-Building Wireless Conference – Feb.’04 Fast, Secure L3 Roaming Required service for reliable VoIP 1. APs and clients authenticate via central WLSM Module CiscoWorks WLSE CiscoSecure ACS 3. Support >300 AP’s 2. Clients securely Fast Layer 3 roam (<50 ms handoff times) 10.1.1.1 4. Support >2000 VoIP clients RM

16. 16 © 2004 Cisco Systems, Inc. All rights reserved. In-Building Wireless Conference – Feb.’04 Deploying VoWLAN: Recommendations & Best Practices 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 To run voice over your WLAN, now or in the future, here are some things to consider as you design/deploy your WLAN network: Cisco White Paper: “Cisco Wireless IP Phone 7920 Deployment Recommendations” http://wwwin.cisco.com/eag/wnbu/tech_resources/white_papers.shtml

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