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Telecommunications
- Aegis Communications
- Airtouch Cellular
- Alcatel
- AT&T
- Axtel
- Bell Atlantic
- Bell Canada
- Bell Mobility
- Bell South
- BigBand Networks
- Cellular One
- Cingular Wireless
- Cox Communications
- Excel
- GTE
- Lucent Technologies
- McCaw Cellular One
- MCI
- Nextel Communications
- Nortel Networks
- Northern Telecom
- Octel Communication
- Quest Communications
- Siemens
- Southwestern Bell
- Sprint
- SunCom Wireless
- Sungard
- Telewest Communications
- Time Warner
- United States Cellular
- US West
- Verizon
- Verizon Wireless
- Yellow Pages
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