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

Minneapolis, MN — March 21, 2006 — The conversion technology and switching expert, Transition Networks Inc., a wholly owned subsidiary of Communications Systems, Inc., today announced the introduction of its new, remotely managed 10/100 copper-to-fiber media converter for its Point System™ modular chassis.

The 802.3ah-supported 10/100 media converter is designed for service providers who have customers and require a managed conversion at the remote end. They can monitor the link, activate loopback, provision the bandwidth, enter and manage VLANs, QoS and choose appropriate mode of connection straight from their Network Management centers.

"We offer service providers an end-to-end solution for managing their customer connections, or they have the option of using our product with an 802.3AH compliant device. Because the product is designed around an industry standard, the customer is not locked into one manufacturer’s proprietary solution,” said Bill Schultz, vice president of marketing at Transition Networks.

Product Features
The new 10/100 converter supports the IEEE 802.3AH OAM In-Band management for monitoring, reporting and active management of the entire link. Remote loopback can also be activated should troubleshooting be required. A service level differentiation can be achieved by providing different bandwidth levels for different customers at a different cost.

Network security and segmentation is supported by full VLAN management. QoS and a wide variety of link monitoring, troubleshooting, and reporting features increase network performance. Digital diagnostics enable network administrators to measure the quality of the optical connection and report it over the OAM and SNMP management. Link Loss Notification signals the fault to the management. IEEE802.1X and Radius enable user authentication and increase network security and ease of user management.

This converter solution can be managed via graphical user interfaces such as Focal Point™, HPOV or Cisco Works as well as any web browser, telnet or local serial command line interface. Service providers can also gather information about customers' bandwidth and traffic utilization. Management security is assured by a variety of Transition Networks's security features including Firewall (IP filtering), ACL – Access Contrsol Lists, SNMP Lock (Complete SNMP lock) or local CLI lock (no local access).

The product has all typical features including Auto-Negotiation, AutoCross™, Symmetrical or Asymmetrical Pause, Transparent Link Pass Through and Automatic Link Restoration. The Automatic Link Restoration feature ensures, that once the fault condition is removed, no user intervention is ever required to bring the entire link back up again.

While the product is fully compliant with the 802.3AH standard, the customer does have the option of programming the converters with their own IP address if that is the preferred method of managing the devices.

Product Configuration
Transition’s remotely managed 10/100 media converter is available in Point System™ modular chassis card and a standalone version. These products can be used in pairs or with any other IEEE 802.3AH product.

Product Availability
The 10/100 models will be available in April. Please contact Transition Networks or click here for the latest information.

About Transition Networks Products
Transition Networks's 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 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 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.