Transition Networks Expands ION Platform With TDM Cards; Enabling Service Providers and Enterprise Customers the Ability to Maintain Legacy Revenue Streams

Minnetonka, MN — May 10, 2011 — Transition Networks Inc.,tthe fiber access technology expert, a wholly owned subsidiary of Communications Systems, Inc. (NASDAQ:JCS), today announced the introduction of two new Time-Division Multiplexing (TDM) modules for the ION Platform — the x6010 series and the x6210 series. Both products are built to enable service providers, cable operators, utilities and enterprises the ability to provide differentiated services across a fiber infrastructure, creating additional revenue opportunities, while also reducing costs. The x6010 series allows T1/E1 protocols to be sent over fiber, while the x6210 series includes support for DS3 – T3/E3 protocols.

“Customers are looking for flexibility and security in a single chassis,” said Patrick Schaber, Global Director of Marketing at Communication Systems Inc. “With the new x6010 and x6210 products we are enabling customers to have a multi-protocol chassis within our all-new ION Platform. Both the x6010 and x6210 offers the security, performance and price savings that customers desire while also leveraging new technologies within the existing infrastructures.”

Product Features
The x6010 and x6210 are available as a slide in module for the ION Platform, as well as a standalone device. The x6010 series and x6210 series are available in fixed optic models as well as SFP versions. The SFP models allow for easy integration and use of Coarse Wave Division Multiplexing (CWDM) technologies. A customer is able to easily change from multi-mode to single-mode or change the distance by quickly switching out the SFP.

Customers can take advantage of the ION Platform’s added security and management when using the ION Management Module (IONMM) with these two new TDM devices. The IONMM offers management VLAN capabilities, SSL/SSH, ACL rules, device configuration backup and restore, 802.1x, SNMP and a variety of other advanced features.

The x6010 and x6210 can be configured, monitored and managed remotely using the software capabilities of the ION Platform or the devices can be configured locally using the available dip switches located on the physical product.

Product Availability
Please contact Transition Networks at (800) 526-9267 or +1-952-941-7600 for pricing and more information on the Transition Networks’ ION TDM products. You can also visit www.transition.com for the latest information.

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 (NASDAQ:JCS).

Statements regarding the Company’s anticipated performance in 2011 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.

Company Contact:
Patrick Schaber
Transition Networks
(952) 996-1526

Editorial Contact:
Kim Miller
Tier One Partners
(617) 610-0583