• Bellsouth Telecommunications Inc
• Southern New England Telephone Co
• Southwestern Bell Telephone Co
• Pacific Telecom Inc
• Sprint LLC
• United Telephone Co of Ohio
• United Telephone Co of Pennsylvania
• Alteva, Inc.
• Western Reserve Telephone Co
• Wisconsin Bell Inc
• Woodbury Telephone Co
• Rock Hill Telephone Co
• Bell Canada
• Carolina Telephone & Telegraph Co
• Commonwealth Telephone Enterprises Inc
• Carnegie International Corp
• Aliant Communications Inc
• American Millennium Corp Inc
• Incomnet Inc
• Shenandoah Telecommunications Co.
• Com Systems Inc
• Cincinnati Bell, Inc.
• Allnet Communication Services Inc
• BCE Inc
• Calypso Wireless Inc
• MCI Inc
• Telecommunications Systems Inc
• Multiband Corp
• Verizon Communications Inc
• Bellsouth Corp
• Nynex Corp
• Ameritech Corp
• Pacific Telesis Group
• AT&T, Inc.
• Comcast Mo Group Inc
• Salient 3 Communications Inc
• Icoa Inc
• Icf Corp
• Bt Group PLC
• North Pittsburgh Systems Inc
• Enventis Corp
• Nippon Telegraph & Telephone Corp.
• DCI Telecommunications Inc
• Bell Communications Research Savings & Security Plan
• Bell Communications Research Inc Savings Pl for Salaried Emp
• Payline Systems Inc
• Acc Corp
• Alc Communications Corp
• Vdc Communications Inc
• Icg Holdings Canada Co

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