- A At Communications Corp
- ADC
- Adelphia Business Solutions
- AFL Network Svc
- Alliance Telecom Corp
- Amchel Communications
- Amchel Communications
- Applied Systems Intl
- Aptus Communications
- Artel Inc
- Austins Connection Co
- B & C Telephone Inc
- B Line
- Blue Mountain Telecomms Inc
- Blue Mountain Telecomms Inc
- Brand Telecommunications
- Broadlink Telecom LLC
- Bt North America
- Cabling Concepts Of Wisconsin
- Caprock Telecommunications
- Cellxion
- Clay Communications Inc
- Concerto Software Inc
- Concerto Software Inc
- Cordev
- Corporate Communication System
- Corporate Communication System
- Corriveau & Assoc Inc
- Custom Soundworks
- Custom Soundworks
- D P Communications
- DBS Telecommunications Ntwrk
- DBS Telecommunications Ntwrk
- Delta Telecom Consulting
- Delta Telecom Consulting
- Diamond P Enterprises Wire
- Digital Tower Svc
- Direct Connect Equipment
- Direct Connect Equipment
- Doyle Electric Inc
- Dynamic Technical Svc
- Dynamic Technical Svc
- Edhc LLC
- EFI Svc
- Ericcsson Inc
- Ernst Communications
- Excel Group
- First Data Corp
- Foster Associated Contracting
- Foster Associated Contracting
- Freeman Consulting
- Freeman Consulting
- Futurewei Technologies
- GCI Telecom Svc Inc
- Good Man Network
- Good Man Network
- Highland Communications
- Hurst Brothers Co
- Inmate Communications Inc
- Inmate Communications Inc
- Interstate Telcom Nexcom
- J A Patenaude Co
- J A Patenaude Co
- JEO Inc
- KMM Telecommunication
- LMS Telecommunications
- Marketing Telecommunications
- MCI
- Meg A Link
- Metro-Com
- Mid-South Telecommunications
- Mid-South Telecommunications
- MSC Communications
- Natvig Telecommunication Inc
- NECBNS
- Neris International Inc
- Net Number
- Net Number
- Netsersant Washington Inc
- Nexus Telecommunications
- Nexus Telecommunications
- Nice Systems
- Nice Systems
- NLC
- Nortex Communications Inc
- Northcentral Telcom
- One Voice Technology
- Onesource Communications
- Orca Info-Com Systems
- Pacific Cable
- PCS Hut
- Pegasus Tower Co LTD
- Petracom
- Precision Valley Communication
- Quality Network Svc Inc
- Ram Communications
- SBA
- SBA Towers Inc
- Stargate Technologies
- Stealth Network Technologies
- Stealth Network Technologies
- TCSI Telecommunications
- TCSI Telecommunications
- Team All Pro LLC
- Tekelec
- Tekelec
- Telcon
- Tele Response Ctr
- Telecom Service Bureau
- Telecom Solutions Co
- Telecom Tower
- Telecom Tower
- Telecommunication Systems-Tx
- Telesis Management Corp
- Titan Telcom Solutions
- Tri Mac Enterprises
- Tri Mac Enterprises
- Tri-Tek Communication
- User Telecom Technology Inc
- UTS
- Vaticco
- Voice Power Telcom
- Voice Power Telcom
- Voice Power Telecom Inc
- Voice World
- Wave Phore Networks
- Wayne Scott Communications
- Wayne Scott Communications
- Wilcom Technology
- Wireless By Design
- Woltcom
- Woltcom
- Wren Construction Inc
- Yotta Networks Inc
- Yotta Networks Inc