CTT is a provider of 3Com's line of Business Communications Systems. The 3Com® SuperStack® 3 NBX Networked Telephony Solution, NBX 100 Communications System and the NBX Call Center seamlessly integrate with your computer network to provide your business with the power and flexibility you need as your business grows. Whether you require voice mail, auto attendant, computer-telephony integration, call detail recording or other call center functions one of the NBX Communications Systems offers the optimum solution.

CTT is also a provider of ESI telephone systems.  Since 1987, ESI has designed and manufactured innovative telephone systems for small and midsize businesses. ESI’s award-winning products deliver all the important features businesses need, are incredibly easy to use and yet are very affordable.

Panasonic offers a wide range of phone systems for all types of businesses, large or small. 

Northern Telecom (Nortel) provides full-featured IP Telephony for enterprise environments.