- 1 Nation Technology West
- 2 M Technologies Inc
- 21st Century Communications
- 24-7 Telcom
- 24-7 Telcom
- 360 Networks
- 360 Networks
- 3rd Wave Solutions
- 3rd Wave Solutions
- 5th Avenue Telecom
- A & E Communications
- A & J Technologies
- A & T Telecom Inc
- A 1 Tech Solutions
- A A Telephone Consulting
- A Arizona's Original Commworld
- A B Telcom
- A M Telephone
- A Quick Connect
- A Swecker Communication Svc
- A Swecker Communications
- A T & T
- A-Tech International Corp
- A-Tech International Corp
- A-Tel Communication
- AAA Telephone Co
- Able Telecom & Electronics Inc
- Absolute Communications
- Accent Communications
- Accent Communications Inc
- Access Control & Telecomms
- Access Technologies
- Access Technologies
- Access Telephone Solutions
- Access Telephone Solutions
- Ace Technologies
- Aci Alki Communications Inc
- Aci Alki Communications Inc
- Acoustic Technologies Inc
- ACT Cascades
- Act Communication Technologies
- Acticor Inc
- Action Business Communications
- Action Comm Systems
- Action Telecom
- Acumen Telecom
- Adams Communications
- Adams Communications
- Adams Communications Inc
- Adc
- Adelcon
- Adtran Inc
- Adtran Inc
- Adtran Inc
- Advance Communication Products
- Advance Communications Network
- Advanced Business Comms Inc
- Advanced Comm Equipment Spclst
- Advanced Communication Design
- Advanced Communication Sltns
- Advanced Communications
- Advanced Communications
- Advanced Communications
- Advanced Communications Co
- Advanced Communications Co
- Advanced Communications Svc
- Advanced Communications Svc
- Advanced Network Management
- Advanced Networking Solutions
- Advanced Tele Systems Inc
- Advanced Telecom Svc
- Advanced Telemanagement Group
- Advanced Voice & Data LLC
- Advanced Voice & Data LLC
- Advantage Business Comm
- Advantage Business Comms
- Advantage Communications
- Advantis
- Advantis
- Advoda
- Advoda
- Aep Networks
- Aerotel Communications
- AEX Communications
- Affordable Communication Solu
- Africom Inc
- Agape Communications
- Agency Telecommunication Svc
- Agency Telecommunications
- Agency Telecommunications
- AHA Telecomp
- Air Waves Cellular
- Airlink Communication Inc
- Airtrac Speech Recognition
- Airtrac Speech Recognition
- Akston Technologies
- Albuquerque Telephone Inc
- ALCATEL
- Alcatel De Nogales
- Alcatel USA
- Alcatel USA
- Alcatel USA
- Alcoa Fujikura LTD
- Aleen Technologies
- All City Comp-Tel Svc
- All Clear Communications Svc
- ALL Communications
- All Communications & Svc
- All In One Communications
- All Serv Communications
- All Serv Communications
- All Telephone Communications
- All Telephone Inc
- ALL-Com Communications Inc
- All-Comm
- All-Comm Inc
- Allegheny Voice & Data
- Allen's Telephone Svc Inc
- Alliance Systems LTD
- Alliance Telecommunications Co
- Allied Communications
- Allied Communications
- Allied Comnet
- Allied Telecom
- Allied Telecom
- Allied Telecom
- Allied Telecom
- Alnavco
- Alpha & Omega Business Phones
- Alpha Communications
- Alpha Communications
- Alpha Communications
- Alphion
- Alpine Communications
- Alpine Telecommunications Inc
- Altech Services Inc
- Altel-Alternative Telecom
- Altigen CTI Communications
- Altigen CTI Communications
- Altigen-Cti Communications
- AM Tel Communications
- AM-Tel Communications
- Americall Communications Corp
- American Bell Phone Ctr
- American Business Comm Svc Inc
- American Business Comms Inc
- American Business Comms Inc
- American Business Comms Inc
- American Call Processors
- American Communication Equip
- American Communication Equip
- American Communications Svc
- American Lighthouse Commnctns
- American Line Systems
- American Multiplexer Corp
- American Phone System
- American Telecom Inc
- American Telecommunication Inc
- American Telephone
- American Telephone
- American Telephone Communicate
- American Telephone Exchange
- American Telephone Svc
- American Telephone Tech
- American Telephone Tech
- Americom Communications
- Americom Telephone Systems
- Ameritel Communications Corp
- Amplidyne Co
- Amtel
- Ana Com Inc
- Andrew Corp
- Andy's Telephone Svc
- Anet Telecommunications
- Ansa Fone Of Minnesota
- Ansatel Communications Inc
- Ansatel Communications Inc
- Anza Telecommunications Systs
- Apex Communications
- APM
- Applied Connective Technology
- Applied Innovations
- Applied Innovations
- Applied Telecom Solutions Inc
- Applied Telephone & Data Inc
- Applied Telephone Technology
- Ardent Partners
- ARF Communications
- ARF Communications
- ARF Communications
- Arizona Telephone Installers
- Arizona Telephone Technology
- Arwest Communication Corp
- ASC Plantronics
- Asia Communication Intl Inc
- Asia Communication Intl Inc
- Aso Tele-Data Systs
- Aspen Technologies
- Asset Recovery Communications
- Astro-Tech Communications
- ATC Voice Data Inc
- Atc Voice/Data Inc
- Atlantic Coast Telephone Contr
- Atlantic Communications
- Atlantic Telephone
- Atlas Telecommunications
- Atoga Systems Inc
- ATS
- ATS Gary Peterson
- ATSI
- Attel Communications Inc
- ATV Systems
- ATX Communications Inc
- Audiona
- Avanzareinc
- Avatel Voice & Data Cabling
- Avaya Inc
- Avaya Inc
- AVI Technologies Inc
- AVTEL Business Telephone
- Avtel Business Telephone Systm
- Avtex Inc
- Avtex Inc
- Avtex Inc
- Avvid Technologies - Cisco
- Axess Communications
- Az Preferred Communications
- Az Protel Communication LLC
- Azcom Systems
- B & B Communications Inc
- B & B Enterprises Inc
- B & C Telephone
- B & C Telephone
- B & C Telephone
- B & C Telephone Co Inc
- B & C Telephones
- B & E Communications LLC
- B & K Telecommunications
- B & W Communications
- B B & T Communications
- B B & T Communications Inc
- B G Communications Inc
- Backes Telephone Svc Inc
- Baker Communications
- Baker Communications Inc
- Bandwidth Communications
- Barry Fears Telephone & Cable
- Bay Telephone Systems Inc
- Baypoint Innovations
- Bayside Communications
- Bayspec
- BDS Telecommunications
- Beacon Telcom Supply
- Bel-Tronics Communication Syst
- Belam Inc
- Bell Farm Estates
- Ben Romero Consulting
- Benner-Nawman
- Bennet Communications
- Berg Communications
- Berk-Tel Communications Inc
- Best Computers & Electronics
- Best Tel
- Best Tel
- Best Tel
- Best Tel LLC
- Best Tel LLC
- Bestcomm
- Better Value Tlcmmnctns
- BHT Digital Options
- Bi-State Telesource
- Big Sky Communications Inc
- Bitcom Communications
- Bizcom Information Systems Inc
- Bizub Communications Inc
- Black Box
- Black Box Network Svc
- Black Box Network Svc
- Black Box Resale Svc
- BLS Communications
- BLS Communications Sw
- Bnc Telephones
- Boipros Inc
- Bond Media Intl Inc
- Boyle Communications
- Bracketron
- Bracketron LLC
- Bradco Communications Inc
- Brainstorm Industries
- Breninger Communications
- Brickley Service Co Inc
- Bridgenet Technologies
- Bridgman Communications Inc
- Bro Com
- Broadband Digital Group Tech
- Broadcom Corp
- Broadwing Communications
- Brooks Communication
- Bt Communications
- BTP Business Telecom Product