- Snowfly
- Incept Corporation
- Global Payments Inc.
- Zurich Services
- Digitex
- Accenture Utilities BPO Services
- Porter Positioning
- Vangent, Inc.
- Headsets.com
- CompuCom
- eGain Communications
- New Era Tickets
- Bell Aliant
- BD Trust
- Baldwin-Wallace College
- Tarion Warranty Corporation
- StarTek
- Envision
- Atelka
- Hewlett Packard
- Innovatia
- Cara Call Centre
- American Heart Association
- TouchStar
- Orkin, Inc
- Discover Financial Services
- DIRECTV
- Convergys
- Transactel
- Society for Human Resource Management
- CCM
- Farmers insurance
- GO Transit
- Dynamic Funds
- New York Life Insurance
- DOW Networks
- Syngenta Protecao Cultivos Ltda
- Virtual-Agent Services
- LoJack Corporation
- Voxdata
- FedEx
- Enkata
- Time Communications
- Multienlace S.A.
- PDL Contact Centres
- Connections Call Centre
- George Brown College
- The Shopping Channel
- Teltronics
- Super Technologies, Inc.
- Ontario Teachers' Pension Plan
- Bell Canada
- Starwoodhotels & Resorts
- Vertex, Inc.
- Neutral Posture
- Virtual-Agent Services
- Etech, inc.
- Answerplus
- Premiere Global Services
- Fleishman Hillard
- The CEI Group, Inc.
- Rogers
- CallwRight Solutions
- ALSAC/St. Jude Children's Research Hospital
- White Clarke Group
- Merchants SA
- GE Money Bank
- SOS School of Sales
- Interactive Solutions
- Carnival UK
- Standard Bank
- Cabot Financial Group
- Belgacom S.A.
- Lloyds TSB Telephone Banking
- AXA Insurance
- Nedbank Ltd.
- FON Wireless
- JohnsonDiversey
- i - Fundi
- Call Connect India Ltd.
- StrategyEye
- BOC
- St. George Bank
- Foxtel
- FIS Global Business Solutions
- Hanover Group Ltd.
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- Warid Telecom
- Simptel Communications Ltd.
- NTUC Income Insurance Co-Operative Ltd.
- ICT Group
- Cyber City Teleservices
- BPeSA
- Vodafone
- Dell Products
- Sitel
- Benaoum
- Mobinil
- Devon County Council
- Nuance Communications Germany GmbH
- Sanlam
- ESB
- Mailano Co.
- Spescom DataVoice (Pty) Ltd
- Barclays Bank
- Strato AG
- Audi Bank
- Abtran
- Sheffield Homes
- Meteor Mobile Communications
- InVision Software AG
- Rigney Dolphin
- MTN Nig comm Ltd.
- YOURVOICE
- DTF
- Celtel
- ClientLogic
- The Listening Company
- Mellon Group of Companies
- Wagerlogic
- CPU
- SIA Lattelecom BPO
- Competence Call Center
- National Bank of Greece
- EKI Co.
- Student Loans Company
- BTC Contact Ltd
- NICE
- Borough of Enfield
- Royal & SunAlliance
- Whitbread
- Focus
- Matsushita Electric Industrial Co. Ltd
- China Telecom
- Global Bilgi
- Intelenet Global Services
- CustomerLine Private Limited
- Wipro
- Nippon Boehringer Ingelheim Co. Ltd.
- Club Mahindra
- NanaFalia Info Tech Pvt Ltd.
- BPO Company
- Silver Chain
- Emdad
- Commonwealth Bank of Australia
- CLP Power HK Ltd.
- Infospan Inc.
- Datacom
- KASYAPISERVE
- Unwired
- MIE
- Vision-X
- CSC
- iSelect Pty Ltd.
- Global Sky Communications Centre
- Seven Hills Information Pvt. Ltd.
- Wesfarmers Federation
- MVCI Asia Pacific Pte. Ltd.
- SPanco Telesystem
- Prudential Corporation Asia
- Australian Taxation Office
- True Touch Co. Ltd.
- Strike Force Sales
- PT Bank Mandiri (Persero) Tbk.
- BrickRed
- 24/7 Customer
- HSBC
- Siemens Ltd.
- Transcosmos, Inc.
- National Australia Bank
- One To One Contacts Co. Ltd.
- ANZ
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