- Ria Telecommunications
- Rice Williams Assoc
- Ridge Communications
- Ritter Communications
- River City Communications Corp
- Robert H Fleming
- Roger Irion
- Ron Morell Construction
- SBA Inc
- SBA Towers Inc
- Science Applications Intl Corp
- SDV Telecommunications Inc
- Selena's
- Sentient Group
- Serrato Consulting Corp
- Sess USA
- Shasta Communications Inc
- Signal Engineering
- Skytech
- Smartcity Network
- Southwest Cable Svc
- Spectrum Surveying & Engrng
- Spectrum Technical Solns Intl
- Star Cellular Of San Jose
- Stars & Stripes Telecom Inc
- Stauffer Communications
- Sundance Research Intl
- Sure Com Solutions
- Swisscom Na
- Syscom USA LTD Liability Co
- TCG Communications Inc
- Tech Solutions
- Technical Operations Mgmt Co
- Technical Services
- Tel-Net Inc
- Telcom Inc
- Telcom Services
- Tele Comp Computer Svc
- Teleco Telephone Of Alaska
- Telecom Management Inc
- Telecom Management Solutions
- Telecom Plus
- Telematica Inc
- Telepacific Communications
- Telephone Systems Tech
- Telesoft Corp
- Telesynergy Research USA Inc
- Tellabs Operations
- Telpro Associates
- Teltech Communications
- Tingler Telecommunications
- TKC Communications
- TMS Assoc
- Townes Telecommunications Inc
- Trinity Integrated Networks
- Universal Network Dev Corp
- UPI Telecommunication
- URS Telecommunication
- Vanguard Communications
- Victoria Case
- Virtual Strategies Inc
- West Coast Communications Inc
- Western Telecom Inc
- Westminster National Capital
- WFS Utility Consultants
- Winfanet Systems Inc
- Wireless Works Inc
- Wolte Com Inc
- WORX 4 Us
- WTCS Telecomms Consulting
- Zephyr Communications Inc
