The introduction of 3G handsets and smartphones in the market and deployment of 3G and 4G network technologies have raised the prospects for all stakeholders of the telecoms industry, providing equal opportunities for growth for callable companies, traditional fixed-line operators, mobile operators, over-the-top market vendors and third-party application developers. The IP-convergence/substitution has made multi-service offerings in a unified communication environment possible; telecoms operators can now diversify their business from one area to a number of areas, where the mobile phone has emerged as a central device to connect end-users.

In the enterprise and SMB markets, IP-based and hosted IP telephony services are gaining in importance and are replacing TDM based products, ultimately leading to a complete take over. On the vendor side, traditional PBX vendors are being forced to develop products that are based on IP technology. Enterprise solutions are to provide the first commercially relevant mobile VoIP business. IP-based corporate PBX systems are already common, and mobile-only systems hold significantly less market share.  

Although there is some resistance so far by the mobile network operators to adoption of the VoIP on their networks, but deployment of the 4G technologies -WiMAX and LTE - in the near future is set to change the game for them as well. VoIP is expected to offer mobile operators significant business by allowing them to harness three powerful characteristics:

• they can cut infrastructure costs and service charges to better compete with fixed operators,
• they can expand their coverage by supporting access from WLAN access points, and
• they an offer richer communications services to their users.  

The main players
With a nationwide spread of Internet, all players in the telecoms sector - long distance and local telephone companies, cellular operators, cable providers - are embracing IP-based services. The idea is to offer converged data, landline voice, mobile and video on a single platform from a single provider. Broadband and mobile internet is playing a key role in delivering of this 'triple-play' and now quad-play idea. The market will be dominated by these types of players: 

• IT companies
• Cable companies
• Wireline carriers
• Wireless carriers
• mVoIP entrants
• Application developers
• Content providers
• Consumers (commercial and individuals)  

What does this innovative brand new report deliver?

• Implementation of VoIP on mobile:
• There are more than one ways to access VoIP on mobile phone. Is mVoIP to be a voice service, running over the DSL/ broadband IP network, on a mobile phone?

Or, Are over-the-top services - that users download onto their phones to connect to services providers which are not their primary mobile service provider - to be called mVoIP? 

What will drive the mVoIP market?

The mVoIP has grown in importance. However, what will drive its future growth? This report analyses the factors that are going to influence the market and inspire its growth in the future. Can you afford to be miss out on the new emerging revenue opportunities?

The regional perspectives - The report gives an overview of the US, Canada, Europe and Asian ICT markets inspired by the robust growth in the mobile industry, with a special focus on China and India - the two countries that are driving growth in telecoms services globally.

Table of Contents

Executive summary

E1. VoIP goes on mobile trend

            Table E1. Demography of Internet based communication services

E2. mVoIP - a compromise between economy and mobility?

E3. mVoIP - a global market

E4. What will drive mobile VoIP future adoption?

E5. Focus and scope of this report

1. An overview of mVoIP market

1.1. mVoIP: an introduction

            Table 1.1. Main global providers of commercial VoIP services

            Table 1.2. Providers of VoiP services

1.2. What is mVoIP: how does it work?

            1.2.1. mVoIP vs VoIP

1.3. MoIP (mobile communications over IP)

            1.3.1. What is MoIP?

            1.3.2. Voice over Instant Messenger

            1.3.3. How does MoIP work?

            1.3.4. Is MoIP different from mVoIP?

1.4. mVoIP implementation

            1.4.1. Mobile phone as standard SIP client

            1.4.2. Use of softswitch gateways

            1.4.3. mVoIP implementation: a compromise between economy and mobility?

1.5. mVoIP technologies and standards

            1.5.1. UMA

                        Figure 1.1. UMA architecture

                        1.5.1.1. How does GAN work?

            1.5.2. SIP

                        Figure 1.2. Understanding SIP - SIP in relation to different protocols

1.6. Wireless technologies

            Figure 1.3. Global wireless standards

            1.6.1. EDVO Rev A

            1.6.2. HSDPA

            1.6.3. Wi-Fi

                        1.6.3.1. Wi-Fi standards

                                    Table 1.3. Wi-Fi extensions

                        1.6.3.2. Birth of voice over Wi-Fi

                        1.6.3.3. Wi-Fi mobile phones

                                    1.6.3.3.1. Global shipment of Wi-Fi mobile handsets

            1.6.4. WiMAX 1.64.1. WiMAX users worldwide to double in 2010

            1.6.5. Mobile-Fi

            1.6.6. LTE

                        1.6.6.1. Voice over LTE

                        1.6.6.2. Voice over LTE initiative - formation of VoLGA Forum

                                    Table 1.4. LTE Initiative Volga Forum members

                        1.6.6.3. 3G Americas IPv6 transition consideration for LTE

            1.6.7. Can Femtocell compliment mVoIP?

1.7. mVoIP and mobile network technologies

            1.7.1. W-CDMA

            1.7.2. TD-CDMA

1.8. mVoIP implementation: proprietary protocols

1.9. RIM's new MVS

            1.9.1. Is MVS another type of Wi-Fi-based mVoIP?

            1.9.2. How does MVS work?

            1.9.3. RIM's new MVS - a challenge to IP telephony?

1.10. Accessibility of VoIP on mobile phone: applications and platforms

            1.10.1. Skype mobile

            1.10.2. 3 Skypephone

            1.10.3. iSkoot

            1.10.4. Truphone

            1.10.5. Fring

            1.10.6. Talkonaut

            1.10.7. Nimbuzz

            1.10.8. Jajah

            1.10.9. Vopium

            1.10.10. Gizmo5/Gizmo Project

1.11. mVoIP interoperatibility

            1.11.1. Supporting technologies

            1.11.2. IP interworking

                        Figure.1.5. IP interworking landscape

                        1.11.2.1. IP Interworking and FMC solutions

                        1.11.2.2. GSMA IPI initiative

                                    1.11.2.2.1. IPI initiative: GSMA's IPX proposal

                                                Figure 1.6. The GSMA IP Packet Exchange landscape

                                    1.11.2.2.2. IPI initiative goals

                                    1.11.2.2.3. IPX trials and testing

                                    1.11.2.2.4. IPX commercial launch

1.12. mVoIP user-end applications - the second-stage convergence

            1.12.1. Unified messaging

            1.12.2. Instant messaging

            1.12.3. Presence services

            1.12.4. Voice recognition

            1.12.5. Personal virtual assistant

            1.12.6. Persistence

            1.12.7. Online conferencing

            1.12.8. File sharing

            1.12.9. Online gaming

2. mVoIP market

2.1. mVoIP grows in importance

2.2. mVoIP market

            2.2.1. mVoIP market by users

2.3. mVoIP market

            2.3.1. Global ICT marketplace

            2.3.2. Worldwide communication services market

                        2.3.2.1. Size of profit pools from communications services

            2.3.3. IP-based communication services

                        2.3.3.1. Internet user-base

                        Figure 2.1. Key ICT indicators: Internet by size class, 2007, % of businesses with 10 or more employees

                        2.3.3.2. Broadband market

                        Figure 2.2. Global broadband (per 100 inhabitants) 2007-2008

                        Figure 2.3. Global internet and regional share (%)

                                    2.3.3.2.1. US broadband stimulus

                                    2.3.3.2.2 Wireless broadband market

            2.3.4. Market for personal IP-based communication services

                        2.3.4.1. IP telephony

                        2.3.4.2. IP telephony: Skype takes the lead

                        2.3.4.3. IP telephony equipment market

                        2.3.4.4. Online conferencing market: US in focus

            2.3.5. Telecoms services

                        Figure 2.4. ITU status index of fixed-line incumbents worldwide 1991-2008

            2.3.6. Mobile phone services market

                        2.3.6.1. Mobile phone shipments

                        Figure 2.5. Global handset sale forecast (2009-2014) and smartphone share %

                                    2.3.6.1.1. Smartphones market share

                        2.3.6.2. ITU predicts mobile growth despite economic downturn

                        2.3.6.3. Worldwide mobile phone connections

                        2.3.6.4. Mobile connections to reach 6bn by 2013?

            2.3.7. Mobile broadband

                        Figure 2.6. Cisco global mobile data growth forecast 2008-2013

                        2.3.7.1. 3G uptake

Figure 2.7. Mobile internet user forecast 2009-2014

                        2.3.7.2. Proportion of Mobile broadband to national GDP of China and India

                        Figure 2.8. Cisco mobile data traffic growth forecast by region 2008-2013

                        2.3.7.3. Mobile broadband development

                                    2.3.7.3.1. GSMA's mobile broadband initiative

                                    2.3.7.3.2. Mobile data drives investment in mobile broadband

                                    2.3.7.3.3. Mobile data traffic: Cisco forecast index 2008-2013

                                    2.3.7.3.4. Mobile broadband capex to rise in EU

            2.3.8. Mobile Internet services market

                        2.3.8.1. mVoIP to lead mobile Internet consumption

                        Figure 2.9. Mobile Internet users (mn) 2008-2009

                        2.3.8.2. Arrival of 4G to boost all-IP mobile data solutions

3. mVoIP market driving factors

3.1. Demand to lead mVoIP growth

3.2. Market trends

            3.2.1. Mobile market to sustain growth despite economic slump

            3.2.2. Falling voice revenues

            3.2.3. IMS - an emerging marketplace

                        Figure 3.1. IMS session architecture

                        3.2.3.1. US players moving to IMS to leverage 'U-verse'

                        3.2.3.2. Is commercial support for IMS still an issue?

3.3. Trends in IP outsourcing

            3.3.1. Future of SIP and IP PBX

            3.3.2. Future of the hosted IP telephony

                        3.3.2.1. Microsoft-Vodafone hosted IP services in Europe

3.4. Future of Wi-Fi market

            Table 3.1. Typical hotspot locations

            3.4.1. Implications of VoIP + Wi-Fi/VoWLAN

3.5. IP convergence/substitution market

            3.5.1. Change in business models

            3.5.2. IP convergence market opportunities

            3.5.3. Mobilising enterprise

            3.5.4. Routing calls on data networks

                        3.5.4.1. Advantage of handover between VoWLAN and mobile network

            3.5.5. Nokia driving converged voice services

            3.5.6. Three-Screen concept

                        3.5.6.1.  Is three-screen concept a new marketplace?

3.6. Value addition

            3.6.1. Value addition through blend of services

            3.6.2. Benefit of presence service

            3.6.3. Driving consumer value through mVoIP

                        3.6.3.1. Saving on call-costs

                        3.6.3.2. Enhanced indoor coverage

                        3.6.3.3. Unified access to multiple services

                        3.6.3.4. Combined service-offering through single subscription

3.7. mVoIP benefits to operators

            3.7.1. mVoIP to lead the way for operator to IP convergence

            3.7.2. The 'voice goes mobile' trend to accelerate

            3.7.3. Into enterprise

            3.7.4. Benefit of single-device subscription offering

            3.7.5. Potential to harness mVoIP through MVNOs

            3.7.6. Enable differentiated services

            3.7.7. Lower infrastructure development cost

            3.7.8. Lower operational and maintenance costs

            3.7.9. Different pricing model

            3.7.10. Development of associated technologies

            3.7.11. Applications development

            3.7.12. Potential to increase customer-uptake

3.8. Trends in telecoms deregulation

            Figure 3.2. No of regulatory agencies and % of regulators by region

            3.8.1 Opening up of telecoms market: first generation reforms

            3.8.2. Coming of another generation of reforms?

            3.8.3. Liberalisation of international gateway

3.9. Shift in consumer behaviour

            3.9.1. Spending flow: from wireline to wireless

            3.9.2. Consumer demand for cheaper services to drive mVoIP

            3.9.3. International calling and migrant communities' market segmentation

                        3.9.3.1. International mVoIP calling - a MVNOs case study

                        3.9.3.2. International data communication and pressure on operators for cross-border tariff reduction

                                    3.9.3.2.1. Cross-border data tariffs - a battle point between EU regulators and operators

3.10. Trends in liberalisation

            3.10.1. Building open networks

            3.10.2. Open networks: investment by Google, others in US

            3.10.3. Availability of white space

            3.10.4. White space and 'mesh networks: a boost for Wi-Fi?

                        3.10.4.1. Innovation on white spaces to lead to arrival of free Wi-Fi devices

                        3.10.4.2. Formation of White Space Database Group

4. Potential for mVoIP in Europe - an overview

4.1. Demography of European ICT market

            4.1.1. EU ICT 2020 innovation strategy

4.2. Internet consumption

            4.2.1. Enterprise segment

                        Figure 4.1. EU enterprise Internet: broadband and mobile connections to access Internet 2007-2008

            4.2.2. Internet by households

                        Figure 4.2. Top five Western European countries lead OECD broadband index

            4.2.3. Additional investment on Internet infrastructure

4.3. Broadband                      

            4.3.1. Western Europe leads broadband consumption above OCED average

            4.3.2. Broadband for all by 2010

4.4. Telecoms services

            4.4.1. Single telecoms market

                        4.4.1.1. Spectrum management

                        4.4.1.2. Pro-competitive rules

                        4.4.1.3. Universal access

            4.4.2. Slowdown in telecoms investment - a worrying trend?

4.5. Fixed-line telephony

4.6. Mobile market

            4.6.1. Mobile

            4.6.2. Mobile phone shipments

                        4.6.2.1. Western Europe leads in mobile phone sales

                        4.6.2.2. 3G and Smartphone

                        4.6.2.3. Mobile data market

                        4.6.2.4. Cap on mobile data costs

4.7. IP telephony

            4.7.1. VoIP growing in demand in Europe

            4.7.2. Corporate mVoIP gains users in UK

                        4.7.2.1. BT customers connect to iNUM

4.8. mVoIP adoptability

            4.8.1. 3G boosts potential for mVoIP's operators adoptability

            4.8.2. Skype into Nokia handsets

                        Figure 4.3. Nokia strategy to integrate Skype into N97 mobile handsets

                        4.8.2.1. Nokia's Skype strategy draws cautious approach from MNOs

            4.8.3. Orange leads VoIP market

            4.8.4. 3's skypephone strategy

            4.8.5. Skype's international mobile initiative

5. An overview of US, Latin America and Canadian markets

Competitive landscape of US communication services market

5.1. Innovation drives demand

            5.1.1 Telecoms services

            5.1.2. Telecoms services: consumers spending behaviour

5.2. Demography of US VoIP market

            5.2.1. Hosted IP Centrex market

            5.2.2. Cable operators dominate VoIP landscape

5.3. IP convergence

            5.3.1. IP convergence and IMS growth

            5.3.2. IP convergence and consumer preference

            5.3.3. Online US conferencing revenue in 2008

            5.3.4. Operators push for IP-convergence

            5.3.5. AT&T's three-screen concept

                        5.3.5.1. What is three-screen?

                        5.3.5.2. Is three-screen a new marketplace?

                        5.3.5.3. AT&T's network expansion plans

            5.3.6. IP convergence and Verizon's multi-network solution

5.4. Market trends

            5.4.1. Competitive mobile phone market

            5.4.2. Smartphones lead otherwise sluggish market

            5.4.3. 3G uptake

            5.4.4. Wireless data revenues growth

                        Figure 5.1. Americas mobile data share in comparison with other regions(%)

            5.4.5. Mobile phone subscribers

                        5.4.5.1. Small operators gaining ground

5.4.6. Mobile broadband market

                        5.4.6.1. Rural mobile broadband initiative

5.5. Key mVoIP service providers

            5.5.1. Gizmo Project

            5.5.2. Google Talk and now Google voice

            5.5.3. iChat

            5.5.4. Jajah

                        Figure 5.2. Jajah native VoIP application for iPhone

                        5.5.4.1. Jajah's 'white-label' solution for mVoIP start-ups

            5.5.5. ooVoo

            5.5.6. SightSpeed

            5.5.7. Vbuzzer

            5.5.8. VoipBuster

            5.5.9. Vopium launches in US

            5.5.10. Skype - a market within market

5.6. Business VoIP adoption gains grounds

5.7. Latin America

            5.7.1. Latin American market

            5.7.2. Fixed-line density

            5.7.3. Broadband

            5.7.4. Mobile phone

            5.7.5. Mobile phone shipments

            5.7.6. GSM subscriber’s base

            5.7.7. Market for IP-based voice services

5.8.   Canada

            5.8.1. Landscape of Canadian communications services

            5.8.2. ICT market

            5.8.3. Telecoms market

            5.8.4. GDP in Canadian wireless industry

            5.8.5. Fixed line telephony on decline

            5.8.6. Mobile phone market

            5.8.7. Mobile broadband ranking

            5.8.8. Demand for VoIP services

6. Asian market

6.1. ICT market

            6.1.1. Internet rate

                        Figure 6.1. Internet rate in Asia in comparison to other regions (%)

            6.1.2. Broadband market

                        Figure 6.2. China and Indian top Asian markets

                        6.1.2.1. Wireless broadband stimulates Australian economy

6.2. Telecoms services market

            6.2.1. Fixed-line telecoms services

            6.2.2. Mobile phone market

            6.2.3. Asia will sustain mobile market growth despite economic slowdown

            6.2.4. South Korea catching in on 100% mobile rate

            6.2.5. Japan mobile phone market faces flat future

            6.2.6. China mobile expansion scale escalates

            6.2.7. India strengthens mobile market position globally

6.3. Mobile phone shipments in Asia

            6.3.1. Mobile broadband market

            6.3.2. Telenor predicts tremendous growth in mobile broadband in Asia

            6.3.3. Mobile broadband contributes billions to China's GDP

            6.3.4. China Mobile aims for 100mn 3G users by 2011

            6.3.5. 3G auction in Thailand and MNOs investment plans

6.4. mobile VoIP

            6.4.1. Potential for growth in mVoIP

            6.4.2. WiMAX key to Asia's mobile VoIP market

            6.4.3. Internet phone use picks up growth in South Korea

6.5. China and India - markets within the market

            6.5.1. Telecoms services

            6.5.2. China and India drive telecoms spending

            6.5.3. Demography of Indian telecoms services

                        6.5.3.1. India telecoms market stays robust

                        6.5.3.2. Potential for telecoms growth

                        6.5.3.3. India's WiMAX users by 2012

                        6.5.3.4. 3G deployment to change India telecoms market landscape

                                    6.5.3.4.1. 3G spectrum auction delays costing India billions

                                    6.5.3.4.2. 3G auction and the Capex rush

6.5.3.5. Global operators' commitment grows for India

                        6.5.3.6. India's pan-India ambitions - entrants of new operators

            6.5.4. China

                        6.5.4.1. China's mobile expansion scale

                        6.5.4.2. 3G development to promote expansion

                                    6.5.4.2.1. 3G spectrum allocation

            6.5.4.3. China's burgeoning mobile Internet to open opportunities for mVoIP

                        6.5.4.3.1. China Unicom experiments free mobile Internet

                        6.5.4.3.2. Beijing Telecom EV-DO network in commercial launch

                        6.5.4.3.3. China Voice Holding teleconferencing application for 3G users

7. Security and regulations

7.1. Security mechanism for IP telephony

            7.1.1. Security concerns and network gateways

            7.1.2. Security vital for VoIP services to win customers over traditional networks

7.2. Types of security threats and vulnerabilities

            Figure 7.1. Security layout of IP-based networks and vulnerabilities

            7.2.1. Denial of service

            7.2.2 Spam over Internet Telephony

            7.2.3. Fraud

            7.2.4. Tapping/intruding

            7.2.5. Official tapping

            7.2.6. Confidentiality

7.3. Quality of services and security concerns

            7.3.1. Speed and quality

            7.3.2. Quality of service and latency

            7.3.3. Jitters can be detrimental to QoS

            7.3.4. Packet loss

            7.3.5. Quality of service implications for security

            7.3.6. Encryption and QoS issues

            7.3.7. Authentication and integrity

            7.3.8. Simplified call enabling procedures

7.4. Regulations

            7.4.1. Regulating IP-based telephony segment

            7.4.2. Attitudes in developing countries to restrict VoIP

                        Table 7.1. Countries and status of laws regulating VoIP

            7.4.3. US

                        7.4.3.1. FCC

                        7.4.3.2. Foreign Intelligence Surveillance Act

                        7.4.3.3. E-911

            7.4.4. Canada

            7.4.5. Latin America

            7.4.6. EU

            7.4.7. Asia

                        7.4.7.1. India

                        7.4.7.2. UAE

                        7.4.7.3. Korea

                        7.4.7.4. Japan

                        7.4.7.5. China

8. Market reshaping developments

8.1. Latest developments

8.2. BT

            8.2.1. BT's global mobile VoIP service

            8.2.2. BT to launch cellular-only FMC

8.3. Google

            8.3.1 Google Voice - Google to simplify the way phone calls are handled

                        Figure 8.1. Googel Voice testing

            8.3.2. Is Google Voice a threat to Skype, telecoms companies?

8.4. Skype

            8.4.1. Skype for sale?

            8.4.2. Will eBay unload Skype - its fastest-growing asset?

            8.4.3. eBay's new financial targets for Skype

            8.4.4. Skype to pre-load into Nokia mobile devices

            8.4.5. Skype on Google's Android

            8.4.6. Skype for iPhone

                        Figure 8.2. Skype's mVoIP client downable on iPhone

            8.4.7. T-Mobile's Skypeless VoIP strategy

8.5. RIM

            8.5.1. RIM's new MVS

            8.5.2. Is RIM's new MVS a challenge to IP telephony?

8.6. US 'White Space' and expected arrival of free Wi-Fi devices

            8.6.1. Promised innovation on White Space - formation of database group

8.7. New US carrier promises unlimited 3G data, VOIP

8.8. Broadcom unveils new platform for VoIP phones

8.9. India delays VoIP liberalisation

8.10. Time to invest in mobile messaging?

8.11. JAJAH expands VoIP services

8.12. AT&T, Avaya to launch mobile convergence solution for corporate users

8.13. Verizon's unified communications manage services offering

8.14. Vyke in mobile VoIP deal with Nimbuzz

8.15. Tuitalk's 'free' international calling

8.16. Truphone

            8.16.1. Truphone anywhere Service

            8.16.2. Truphone support to Paypal

9. Interview, quotes and useful leads

9.1. Steven Shaw, VP Market Development, Kineto Wireless

9.2. Quotes

            9.2.1. MD 3G Group on mobile broadband

9.2.2. Stefan Oberg, VP Skype for Business on launch of Skype for SIP

            9.2.3. GSMA CTO on IPX and IP interworking

9.4. Leads

10. Conclusion

10.1. Future of mVoIP

10.2. What will drive mVoIP market?

            10.2.1. ICT market

            10.2.2. Telecoms services market

            10.2.3. Mobile phone market expansion

10.3. Consumer demand

            10.3.1. Individual users

10.4. Industrial adoptability

            10.4.1. MNOs

                        10.4.1.2. Are MNOs willing to adopt over-the-top mVoIP?

                        10.4.1.3. Can operators afford to continue to ignore mVoIP?

                        10.4.1.4. Will MNOs adjust prices to thwart threat from over-the-top mVoIP?

                        10.4.1.5. Will 4G change the game for all?

                        Figure 10.1. Global LTE subscribers forecast 2010-2014

            10.4.2. MVNOs

            10.4.3. Fixed operators

10.5. Third-party applications developers

10.6. Corporate VoIP users

            10.6.1. Mobilising enterprise

10.7. Falling operator revenue

10.8. Emergence of IMS

10.9. Trends in IP outsourcing

10.10. Future of SIP and IP PBX

10.11. Future of hosted IP telephony

10.12. Future of Wi-Fi market

10.13. IP convergence/substitution market

10.14. Key concerns/threats

            10.14.1. Security and privacy

            10.14.2. Confusion over what is mVoIP

            10.14.3. Confusion over pricing

            10.14.4. Confusion over emergency calling

            10.14.5. Lack of awareness

            10.14.6. Availability of handsets

            10.14.7. Handset pricing

            10.14.8. Different business approaches

            10.14.9 MNOs resistance to over-the-top market

10.15. Recommendations

            10.15.1 Holistic approach

            10.15.2. Market-specific recommendations

10.16. Key forecasts

            10.16.1. Demography of mVoIP future growth

                        Figure 10.2. Mobile VoIP users forecast 2008-2014

10.17. Regional overview

            Figure 10.3. Mobile VoIP regional growth forecast 2009-2014

Companies & Organisations Mentioned in Report

3

3G Americas

3GPP2

AT&T

Apple

Airwide Solutions

AIM Call Out

Apptix                           

Arcor                   

AT&T CallVantage

Alcatel-Lucent

Advanced Info Service

Associated Chambers of Commerce and Industry, India

Avaya

AOL

BabyTEL               

Betamax                       

Blue Ridge Communications

BlueFace                  

BroadVoice

British Telecom

Bharat Sanchar Nigam Ltd

Bharti Airtel

Bahrain Telecommunications Co

Broadcom

Beijing Telecom

China Voice Holding Corporation

China Mobile

China Telecom

China Unicom

China Ministry of Industry and Information Technology

Clearwire

Cloudmark

Comsearch

Concept Economics

Cable & Wireless

Cisco

Charter Communications

Clearwire

Comcast Digital Voice

Covad

Cox Communications

Communications and Manufacturing Association of India

Challenger Mobile

Comcast

Datang Telecom Technology

Department of Telecommunications, India

Deltathree

DTAC

Dell

DoCoMo

Deutsche Telekom

Engin                           

Entanet

Eurostat

eBay

Etilasat

Ericsson

EU Telecoms Commission

Eurostat

European Regulators Group

European Telecommunication Network Operators Association ETNO

European Parliament

European Competitive Telecommunications Association

France Telecoms

FaktorTel

Free          

Freshtel

Fring

Facebook

Gloabl IP Alliance

Gradwell

GrandCentral

Google

Gizmo

Globalive Communications

GSM Association

HTC

Henning Schulzrinne

Huaweii

Hewlitt-Packard

Hutchison Whampoa

Hutchison Essar

Hutchison Telecommunications

Intomobile

IWS

International

ITU

IMS Forum

IMS Technical Working Group

Intel

Information Technology and Services Alliance

inCode Telecom Group

iNUM

iPoque

iPass

ICQ

IDATE

iSkoot

Jajah

Jabber

Kineto Wireless

Korea Telecom

Lingo (Primus)

Lucent Technologies

LG Electronics

LG Dacom

LECG

Leap Wireless

magicJack

Mediacom

Modern Telegraph

Mahanagar Telephone Nigam Ltd

MetroPCS

MIC

Myspace

MM Research Institute

Microsoft Corporation

Motorola

Net2Phone

Nortel

Nokia

Nokia Siemens Networks

Nimbuzz

Neustar

NEC

NPD Group

OECD

Orange

ooVoo

OnRelay

Packet8 (8x8)         

PhoneGnome

Primus Canada

Palm

PayPal

Philips

Pricewaterhouse

Qnective

Qwest Communications

Research In Motion

Rigatta

Shaw Communications

Sipgate        

Speakeasy

Suddenlink Communications

Symbian

Samsung

Starent Networks

Sprint

Sony Ericsson

SightSpeed

Skype Ltd

Sybase 365

SurfKitchen

SIPphone.com

SunRocket

S. Tel Ltd

Swan Telecom

Telewest Business

Tesco                

Time Warner

Telecom Italia

Talkonaut

Tata Teleservices Ltd

Telstra

Telenor

TeliaSonera

Twitter

Telecommunications Industry Association

Telecommunications and Infrastructure Administration

Telecom Regulatory Authority of India

Telephonetics VIP

Tuitalk

Tencent QQ

T-Mobile

TOT

TruPhone

UMA consortium

US FCC

Unitech Wireless

US Department of Agriculture

US Rural Utilities Service

Verizon Communications

Videotron Ltee

Vocaltec

Vodafone

Vonage

Vopium

VoipUser

Vbuzzer

VoipBuster

Verizon VoiceWing

Vocalocity

Vocaltone     

Networks ,             

VoicePulse

Voipfone                      

Voxbone

Vyke

VoLGA Forum

Verizon Wireless

Vyke

Windows Live Call

White Space Database Group

Wi-Fi Alliance

WiMAX Forum

Yahoo

ZTE

Zer01 Mobile