Editorial Contact: Kim Miller
KLM Public Relations Inc.
(617) 610-0583
klmcomm@hotmail.com

Minneapolis, MN — November 28, 2006 — The conversion technology and switching expert, Transition Networks Inc., a wholly owned subsidiary of Communications Systems, Inc., today announced it has joined the Metro Ethernet Forum (MEF), an industry alliance comprising more than 90 organizations including telecommunications service providers, network equipment/software manufacturers, semiconductors vendors and testing organizations. As a member of the MEF, Transition Networks will work closely with industry evangelists to accelerate the worldwide adoption of Carrier-class Ethernet networks and services.

"We are excited to work alongside our industry colleagues to formulate standards to meet the sophisticated requirements of service providers," said Bill Schultz, vice president of marketing at Transition Networks. "We have been providing carriers with quality media conversion solutions to help them leverage their existing network infrastructure for years. We are looking forward to putting our knowledge to work to help the carrier industry take advantage of the benefits of Ethernet."

The Metro Ethernet Forum (MEF) is a global industry alliance comprising more than 90 organizations including telecommunications service providers, network equipment/ software manufacturers, semiconductors vendors and testing organizations. The MEF’s mission is to accelerate the worldwide adoption of Carrier-class Ethernet networks and services. The MEF develops Carrier Ethernet technical specifications and implementation agreements to promote interoperability and deployment of Carrier Ethernet worldwide.

About Transition Networks, Inc.
Transition Networks Inc. offers networking connectivity solutions that make networks perform better, faster and more reliably while helping companies leverage their existing networking infrastructure. The company’s Transition Networks brand of media converters make conversion between disparate media types possible, providing conversion technology solutions that offer the necessary adaptations without affecting the performance, nature or appearance of the network. Its complete Milan portfolio of multilayer switching and wireless products are designed to facilitate low-cost network evolution with unique solutions, easing the stress on networks caused by high-bandwidth applications. Based in Minneapolis, Transition Networks distributes hardware-based connectivity solutions exclusively through a network of resellers in 50 countries including Ingram Micro and Tech Data. Transition Networks is a wholly owned subsidiary of Communications Systems, Inc., a publicly traded company (AMEX: JCS).

Statements regarding the Company's anticipated performance in 2006 are forward-looking and involve risks and uncertainties, including but not limited to: competitive products and other factors discussed from time to time in the Company's filings with the Securities and Exchange Commission.