RavenNet
- Provides a seamless network connecting many sites together for enhanced coverage radio coverage.
- http://www.ravennetsystems.com

Motorola Trunking Communications
- Offers a range of trunked solutions. Includes system overviews and benefits, industry usage, and technical articles .
- http://www.motorola.com/governmentandenterprise/public/functions/home/home.aspx

Trident Micro Systems
- Develop and manufacture products for the commercial radio industry, specializing in advanced radio trunking systems, conventional systems and mobile data products.
- http://www.tridentms.com/

Digital Wireless Corporation
- Develop and supply a high speed networked trunked digital radio system with secure, digital audio and integrated data transmission . Includes an article with diagrams of the dispatch voice over internet protocol technology.
- http://www.digitalwireless.com/

Bytel, Inc.
- Manufacture a trunking data modem for automating remote functions over trunked radio networks. Includes product overview and specifications .
- http://www.bytel.com/trunking_modem.htm

LCC International, Inc.
- Design, optimize and build-out cellular, PCS, paging, trunked radio and other two-way mobile systems throughout the world. Includes investor relations, media center, career opportunities, and related links .
- http://www.lcc.com/

SmarTrunk Systems, Inc.
- Manufacture digital trunking system protocol for trunked mobile radio systems at UHF and VHF frequencies. Offers a range of product, technical, and training information .
- http://www.smartrunk.com/