Commercial Communications
- Communication equipment sales and service. Audio, Video and Data networking, along with home automation. Turner
- http://www.megalink.net/~comcom/

BCR Communications
- Specializing in small to mid-size business telephone systems, voice and data cabling and service. Scarborough
- http://www.bcr.net/

Main Resource Inc.
- Offers complete lines of refurbished telephone systems for installers and end users. Product details and specifications, configuration guides, on-line ordering and account access, user tips and articles. Located in Portland.
- http://www.mainresource.com/