1. Implementing VoIP in a wireless world Herman Abel Product Manager Aculab (booth 402) herman.abel@aculab.com Phone: +44 1908 273815

2. September 10-12, 2007 Los Angeles Convention Center Los Angeles, California www.ITEXPO.com 2 Agenda What is wireless VoIP? Three key issues Wireless VoIP makes money Your opportunities with wireless VoIP Summary

3. September 10-12, 2007 Los Angeles Convention Center Los Angeles, California www.ITEXPO.com 3 No, it is not wireless VoIP! Is this wireless VoIP? Used for voice communications between kids Uses wireless, digital and packetised voice Connected to Internet Community of ‘live objects’ around the globe

4. September 10-12, 2007 Los Angeles Convention Center Los Angeles, California www.ITEXPO.com 4 Defining the wireless VoIP A blend of basic ingredients is required: –Wireless LAN / WAN –IP framing on the user / edge device –Support of mobility / roaming –Multiple access points (cells / pico-cells / base stations) –Integration of voice and data applications (video is next) Mobility is the key issue No.1!Infrastructure is the key issue No.2! Mobile Internet is the key issue No.3!

5. September 10-12, 2007 Los Angeles Convention Center Los Angeles, California www.ITEXPO.com 5 Two types of wireless VoIP –Enterprise wVoIP indoor via Wi-Fi –Public Internet wVoIP via Wi-Fi / WiMAX Dual mode access technologies / phones Mobility – wireless VoIP gets you unplugged! GSM / CDMA outdoor VoWiFi indoor Public cells outdoor Private pico-cell indoor FMCUMA Fixed / mobile convergenceUnlicensed mobile access

6. September 10-12, 2007 Los Angeles Convention Center Los Angeles, California www.ITEXPO.com 6 Infrastructure Simplicity –Wireless VoIP offers much simpler indoor infrastructure Cost –Cheaper to install and maintain Quality –Wireless should be on a par with wireline –Coverage, congestion, etc.

7. September 10-12, 2007 Los Angeles Convention Center Los Angeles, California www.ITEXPO.com 7 Integration of voice with data applications It’s not that simple phone anymore… Voice is integrated with office tools –Mobile email access, organiser, etc. Unified messaging –Push-to-talk –Instant messaging Internet access –Browsing –Enterprise wVoIP + Internet VoIP ( )

8. September 10-12, 2007 Los Angeles Convention Center Los Angeles, California www.ITEXPO.com 8 Technologies overview Wi-Fi –‘Last foot’, enterprise level wLAN technology –Robust, deployed, proven, cheap and simple –Unlicensed –150 feet indoors, 300 feet outdoors WiMAX –‘Last mile’, cell-like technology –Promising, but yet to be proven –Licensed spectrum – costs £€$¥ –30 miles outdoors

9. September 10-12, 2007 Los Angeles Convention Center Los Angeles, California www.ITEXPO.com 9 Technologies overview WCDMA HSDPA HSUPA Super3G TD-CDMA Flash- OFDM Wi-FiWiMAX Availability VoIP capability Maximum latency Speed per user 20072010 2008 300ms No 200ms 100ms 25ms 100ms50ms 200ms 100ms 200kbps1Mbps 2Mbps<10Mbps 1Mbps 1.5Mbps >10Mbps <10Mbps

10. September 10-12, 2007 Los Angeles Convention Center Los Angeles, California www.ITEXPO.com 10 Wireless VoIP makes money In building (DoCoMO, Passage) In building + public areas (BT Fusion) VoWiMAX (Korea telecom, Sprint) In building fixed (Skype/ Siemens DECT) Public areas (Vonage/ Boingo) IMS-based services (Super3G) DIY cellular (Skype on Motorola phone) (Source: Analysis)

11. September 10-12, 2007 Los Angeles Convention Center Los Angeles, California www.ITEXPO.com 11 Your opportunities with wireless VoIP Wireless VoIP roaming –Fast call routing and seamless cell switching –Cell congestion management –Coverage improvements Integration of complete solutions –Integration with IP-PBX, gateways, media servers –Support for voicemail, call transfer, conferencing, email, fax, video, etc.

12. September 10-12, 2007 Los Angeles Convention Center Los Angeles, California www.ITEXPO.com 12 Your opportunities with wireless VoIP Scalability, availability, resilience –Growing an enterprise solution –Related to roaming Quality of service (QoS) –Audio quality affected by delay, jitter and packet loss –Codecs, PLC, bandwidth management

13. September 10-12, 2007 Los Angeles Convention Center Los Angeles, California www.ITEXPO.com 13 Your opportunities with wireless VoIP Security –Wireless channel security –Wireline security (Secure RTP, TLS, SIPS, etc.) Dual mode end user devices or services –FMC or UMA –Feature rich, low cost or oriented to a particular market segment

14. September 10-12, 2007 Los Angeles Convention Center Los Angeles, California www.ITEXPO.com 14 Summary Three key issues of wireless VoIP: –Mobility –Simpler ‘last foot’ infrastructure –Benefits of integration of wireless voice with data Radio access technologies include Wi-Fi, WiMAX, HSDPA/HSUPA, TD-CDMA and Flash-OFDM Wireless VoIP can be managed, private, public, portable or truly mobile Business opportunities exist in roaming, security, scalability, QoS and dual mode operation

15. September 10-12, 2007 Los Angeles Convention Center Los Angeles, California www.ITEXPO.com 15 Thank you! Herman Abel Product Manager Aculab (booth 402) herman.abel@aculab.com Phone: +44 1908 273815