Please see blog http://blog.eComm.ec

2. LTE Voice: No problem, or a world of pain?eComm, 29th June 2011

3. Future telephony economics 101 Copyright Disruptive Analysis Ltd 2011 June 2011

4. Voice ≠ Telephony Now: 2G & 3G Copyright Disruptive Analysis Ltd 2011 June 2011 Future: Smartphones & LTE Voice Voice Telephony Telephony Gaming, CEBP, surveillance, social voice, TV voice etc Voicemail Conferencing PTT Video Video, context, sense

5. 2020 “Straw Man” 1bn LTE handsets Comms services ARPU $20 / mo [but 50% carried on 2G/3G/WiFi] $120bn revenue = equivalent to 2010 SMS market Lots of options for voice on LTE networks Copyright Disruptive Analysis Ltd 2011 June 2011 + need for continuity at LTE / 3G / 2G /WiFi boundary

6. LTE voice & VoLTE challenges Too many spectrum bands Acoustics Offload / multi-bearer scenarios Unknown need for optimisation & tuning of RAN High probability of OSS / BSS headaches Lack of clarity around network-sharing / wholesale scenarios Indoor coverage problems, esp. with MIMO Massmarket handsets a long way off Where is SMS??? Copyright Disruptive Analysis Ltd 2011 June 2011 VoLTE only addresses “old telephony”, not general-purpose voice for future apps. Should be called ToLTE

7. IMS: dead, but now nailed to the perch of LTE? Copyright Disruptive Analysis Ltd 2011 June 2011 (With apologies to Monty Python) LTE 3GPP & GSMA Fjords, aka RCS Mobile IMS http://disruptivewireless.blogspot.com/2009/08/mobile-ims-and-lte-networks-dead-parrot.html

8. Some technology gaps? Copyright Disruptive Analysis Ltd 2011 June 2011 Prioritisation & QoS engines for complex scenarios Solution for SMS on LTE that works Telephony & messaging model for wholesale LTE networks VoIP and messaging in complex offload scenarios Signalling management for VoLTE, comms apps & MBB On-device measurement of user-perceived QoE Advanced acoustic technology optimised for mobile VoIP Dual-radio GSM / LTE devices and chipsets

9. Next steps: participate, analyse & collaborate Copyright Disruptive Analysis Ltd 2011 June 2011

10. www.disruptive-analysis.com disruptivewireless.blogspot.com @disruptivedean +44 (0) 7941 100016 June 2011 Copyright Disruptive Analysis Ltd 2011