Company Contact: Patrick Schaber Transition Networks (952) 996-1526 pats@transition.com Editorial Contact: Kim Miller Tier One Partners (617) 610-0583 kmiller@tieronepr.com Transition Networks Showcasing Extensive Fiber Access Product Portfolio at Interop 2008 Company Aims to Give Customers the Right Tools to Meet Broad Demand of Today’s Networks Minneapolis, MN — April 24th, 2008 — Transition Networks Inc., the conversion and switching technology expert, a wholly owned subsidiary of Communications Systems, Inc. (AMEX: JCS), will be showcasing their broad portfolio of fiber access network infrastructure products at this year’s Interop 2008 conference. Transition’s innovative products are aimed at providing network managers the right tools to meet the increased demand from today’s networks. During the show which runs from April 29 through May 1 at the Mandalay Bay Convention Center in Las Vegas, Transition will be presenting their Technology Toolkit Series. This series of presentations highlights how networks have become more diverse and new applications are forcing a broader range of product requirements. “Today’s network managers are converging networks, extending networks, managing remotely, and providing more bandwidth while trying to control costs and maintain existing networks,” said Patrick Schaber, Director of Marketing at Transition Networks. “They can’t afford to be single-minded in their approach to meeting these demands. They need a flexible set of solutions that allow them to manage their growth and allow their networks to evolve.” Transition will illustrate how it’s broad base of fiber networking gear allows network managers to manage the growth companies face while still maintaining their existing infrastructure. Market leading copper-to-fiber conversion and Ethernet switching products aimed at Enterprise, Security, Data Center, Industrial and Service Provider customers will be on demonstration by Transition’s representatives. Product demonstrations include: Power and Data Merged with Power-Over-Ethernet (PoE) Combine power and data over one copper cable to wireless access points, security cameras and IP phones with Transition’s PoE copper to fiber conversion and switching products. Transition will also be announcing the release of their new 8-port Gigabit PoE web managed switch. Ethernet From the Office to the Hardened Environment Take Ethernet from the office to the factory floor, substation, and extended temperature environments with Industrial conversion and switching products – including Gigabit and POE options. Evolving The Service Provider Network to Meet Customer Demand Providing service has become more than just a connection. Transition’s selection of MEF certified CPE/NID devices, our fiber conserving CWDM, and traditional TDM products allow providers to guarantee service levels, manage remotely, throttle bandwidth, and assure reliability while preserving valuable fibers. Affordable, Customizable Ethernet Switching Cut costs by paying for only the ports and features you need. Transition’s MILAN brand of Ethernet switches offers a flexible and customizable set of switching options. Manage Data Center Growth Free space in data center cable trays, reduce cooling costs, and manage network growth by replacing bulky copper cabling with fiber cable. The Plug and PlayTM Gigabit Ethernet media conversion module from Transition and Corning offers the highest density conversion solution on the market. Convergence Security & Surveillance with The Data Network Utilize fiber in the data network and Power-over-Ethernet to overcome distance and powering limitations of IP and Analog video security networks. Visit Transition Networks at this year’s Interop 2008 show at booth# 551. Transition representatives will be available to answer your questions and demonstrate the company’s newest innovative products. About Transition Networks Products Transition Networks’ conversion products are known for their ruggedness and reliability. They have a 99.4 percent customer acceptance rating, meaning that approximately one in 1,000 experience failure in the field. All Transition Networks brand of media converters and switches carry a lifetime warranty. 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 products is 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). —30— Statements regarding the Company's anticipated performance in 2008 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.