Serviço de Atendimento ao Cliente
Accent Marketing Services, Inc.
AEGON N.V.
Air France
All Nippon Airways Co., Ltd.
America Online, Inc.
American Automobile Association
American Electric Power
American Express Company
American International Group (AIG)
Amway Corporation (Alticor, Inc)
AT&T Wireless Services
Automatic Data Processing, Inc. (ADP)
AVIS Europe plc
Banco Popular de Puerto Rico (ver estudo de caso)
Barclays Bank plc
Blue Cross and Blue Shield Association
Bresnan Communications
Bright House Networks (ver estudo de caso)
BSC Group
Cablecom Gmbh (ver estudo de caso)
California State Automobile Association
Canadian Imperial Bank of Commerce (CIBC)
Canon U.S.A., Inc.
Capital One Financial Corp.
Carrefour
Cathay Pacific Airways
Centrica plc
Charter Communications (ver estudo de caso)
Citigroup Inc.
City of Fort Worth, Texas
Computer Sciences Corp. (CSC) (ver estudo de caso)
Connextions
Continental Airlines
Contra Costa Health (ver estudo de caso)
Countrywide Home Loans, Inc.
Cox Communications
Credit Suisse First Boston
DaimlerChrysler
Delta Air Lines
Design Within Reach
DHL International (UK) Ltd.
EarthLink, Inc.
EastLink
EDS
Electronic Arts
Expedia, Inc.
FedEx
First National Bank of Omaha
FleetBoston Financial Corporation
General Electric
General Motors
Gerling
GlaxoSmithKline
Goodyear Dunlop Tires Germany (ver estudo de caso)
Group Health Incorporated
Health Net, Inc. (ver estudo de caso)
Hilton Reservations Worldwide (ver estudo de caso)
Home Buyers Warranty Corporation
HypoVereinsBank AG
ICT Group, Inc.
Intersections Inc.
Kellogg Company
Knowsley Metropolitan Borough Council (ver estudo de caso)
KPN
La Quinta Inns, Inc.
Le Groupe Vidéotron
Lloyds TSB
Loop Customer Management (ver estudo de caso)
LPL Financial Services
McKesson Corporation
Merck & Co., Inc.
Metrociti Mortgage LLC
Microsoft Corporation
MM Group
Network Omni
Newgen Results Corporation
NewRoads
Newsday, Inc.
Nordstrom, Inc.
Norm Thompson
Northwest Airlines
Omni Hotels
PACCAR Inc.
Pearson plc
PepsiCo, Inc.
PETsMART Direct
Pioneer Electronics Service Inc.
Powergen plc
PPL Corporation
Protocol Communications, Inc.
Prudential Financial
Puget Sound Energy, Inc.
Qantas Airways Limited
RAC (ver estudo de caso)
Reliant Energy
Sempra Energy
SGI
Shop At Home Network LLC
SIMplus Mobile (ver estudo de caso)
SNT Group
Social Security Administration
Starwood Hotels and Resorts
Sterling Commerce, Inc.
SuperShuttle
Swisscom Group
Sykes Enterprises, Inc.
Symantec Corporation
TeleTech
Telerx (ver estudo de caso)
The Regence Group (The Regence Group)
The Sacramento Bee
The Sharper Image
TIAA-CREF
Ticketmaster
Time Warner Inc.
Tower Records
Tucson Electric Power Company
TXU Corp.
UK Inland Revenue
United States Postal Service
University of Southern California
Verizon Wireless
Virgin Atlantic Airways Limited
Vodafone Group plc
VW Credit, Inc. (ver estudo de caso)
Wachovia Corporation
Western Power
Williams-Sonoma, Inc.
WorldTravel BTI
Xerox Corporation
Yorkshire Water
Zurich Scudder Investments

Cobranças
AEGON N.V.
American Electric Power
American Express Company
Barclays Bank plc
Carrefour
Centrica plc
Citigroup Inc.
Connextions
Countrywide Home Loans, Inc.
Credit Management Consultancy (Asia) Pte Ltd. (ver estudo de caso)
DaimlerChrysler
DBS Bank Ltd. (ver estudo de caso)
Discover Financial Services
First National Bank of Omaha
FleetBoston Financial Corporation
Frontier Communications (ver estudo de caso)
General Electric
KPN
MM Group
NewRoads
PPL Corporation
Protocol Communications, Inc.
Telerx
TeleTech
The Royal Bank of Scotland
Time Warner Inc.
VW Credit, Inc. (ver estudo de caso)
Wachovia Corporation
Westlake Financial Services (ver estudo de caso)
Xerox Corporation
Yorkshire Water

Vendas e telemarketing
AEGON N.V.
Air France
All Nippon Airways Co., Ltd.
America Online, Inc.
America West
American Airlines
American Express Company
American International Group (AIG)
Amway Corporation (Alticor, Inc)
Arvato Services
Automatic Data Processing, Inc. (ADP)
AVIS Europe plc
Bresnan Communications
British Gas
BSC Group
Cabela’s Inc.
California State Automobile Association
Canon U.S.A., Inc.
Cathay Pacific Airways
Centrica plc
Citigroup Inc.
Connextions
Countrywide Home Loans, Inc.
Cox Communications
Delta Air Lines
First National Bank of Omaha
FleetBoston Financial Corporation
Hamilton Contact Center Services (ver estudo de caso)
Health Net, Inc.
Hilton Reservations Worldwide
HypoVereinsBank AG
ICT Group, Inc.
Intersections Inc.
JC Penney
KPN
Lands’ End
Lloyds TSB
MCI
Metrociti Mortgage LLC
MM Group
Newgen Results Corporation
NewRoads
Newsday, Inc.
Optus
Powergen plc
Protocol Communications, Inc.
Prudential Financial
Qantas Airways Limited
Qwest Communications
RIAS
Shop At Home Network LLC
SNT Group
Starwood Hotels and Resorts
Sykes Enterprises, Inc.
Teledirect (ver estudo de caso)
Teleperformance (ver estudo de caso)
TeleTech
The Sacramento Bee
TIAA-CREF
Ticketmaster
Time Warner Inc.
Verizon Wireless
Virgin Atlantic Airways Limited
Vodafone Group plc
Wachovia Corporation
Western Power
Westpac
WorldTravel BTI
Yorkshire Water
Zurich Scudder Investments