EXHIBIT 21.1 Subsidiaries of Premiere Technologies, Inc. Advanced Resources Technologies, Inc., incorporated in the State of New York EBIS Communications, Inc., incorporated in the State of Georgia Premiere Communications, Inc., incorporated in the State of Florida VoiceCom Systems, Inc., incorporated in the State of Washington Voice Partners Company, organized in the State of Ohio Voice-Tel Canada Limited, organized in the Country of Canada Voice-Tel Enterprises, Inc., incorporated in the State of Delaware Car Zee, Inc., incorporated in the State of California In Touch Technologies, Inc., incorporated in the State of California Voice-Net Communications Systems, Inc., incorporated in the State of New York VT of Long Island Inc., incorporated in the State of New York Allagash Communications, Inc., incorporated in the State of Maine Brooks-Sloan, Inc., incorporated in the State of Alabama Caldwell, Inc., incorporated in the State of West Virginia Charp-Tel Enterprises, Inc. incorporated in the State of Rhode Island Digitele Corporation, incorporated in the State of California Lar-Lin Enterprises, Inc., incorporated in the State of Kansas Lar-Lin Investments, Inc., incorporate in the State of Kansas Laugar International, Inc., incorporated in the State of Maryland Mitchell E. Eil, Inc., incorporated in the State of New York New West Communications, Inc., incorporate in the State of Nevada Rambl Corporation, incorporated in the State of New Hampshire RGB Enterprises, Inc., incorporated in the State of Oklahoma Tri-C Communications Corp., incorporated in the State of New York Voice Communications, Inc., incorporated in the State of Florida Voice Link, Inc., incorporated in the State of Louisiana Voice Management, Inc., incorporated in the State of Missouri Voice Telecommunications, Inc., incorporated in the State of New York Voice-Mail Solutions, Inc., incorporated in the State of Kansas Voice-Tel Network Limited Partnership, organized in the State of Delaware Voice-Tel Pty Ltd., organized in the Countries of Australia and New Zealand Xpedite Systems, Inc., Xpedite Systems Worldwide, Inc, incorporated in the State of Delaware Xpedite Systems Holding (UK) Limited, incorporated in the Country of UK Xpedite Systems Limited, incorporated in the Country of the UK Transmit International Limited, incorporated in the Country of the UK Connaught Commercial Services Limited, incorporated in the Country of the UK Xpedite Systems GmbH, incorporated in the Country of Germany Transtelindo Tritamo, incorporated in the Country of Indonesia Xpedite Systems Canada, Inc., incorporated in the Country of Canada Xpedite Systems Korea Ltd., incorporated in the Country of Korea APA Expert Beteiligungsgesellschaft mbH, incorporated in the Country of Germany Swift Global Communications, Inc., incorporated in the State of Delaware Swift Global International Ltd., incorporated in the State of New York Swift Global Communications H.K. Limited, incorporated in the Country of Hong Kong ViTel International Holding Company, Inc., incorporated in the State of Delaware ViTel Limited, incorporated in the Country of UK ViTel Scandinavia A/S Kolding, Denmark, incorporated in the Country of Denmark ViTel Bureau Services Limited, incorporated in the Country of UK ViTel International (H.K.) Limited, incorporated in the Country of Hong Kong ViTel Malaysia Sdn Bhd, incorporated in the Country of Malaysia Xpedite International (Australia) Pty. Ltd., incorporated in the Country of Australia ViTel International (New Zealand) Ltd., incorporated in the Country of New Zealand ViTel International, Inc., incorporated in the State of New York ViTel Telecommunications of Canada, Inc., incorporated in the Country of Canada Xpedite Japan, Inc., incorporated in the Country of Japan ViTel GmbH, incorporated in the Country of Germany Comwave Communications AG, incorporated in the Country of Switzerland Comwave (U.K.) Ltd., incorporated in the Country of the UK Comwave GmbH, incorporated in the Country of Germany U.S. Comwave Communications, Inc., incorporated in the State of New York -2-