Transition Networks Expands Network Interface Device (NID) Product Line With New Remotely Managed, Status Reporting NID

MINNEAPOLIS, MN, Jun 10 (MARKET WIRE) --
Transition Networks Inc., the switching and conversion technology expert,
a wholly owned subsidiary of Communications Systems, Inc. (NASDAQ: JCS),
today announced the introduction of its new, remotely managed 10/100
bridging Network Interface Device (NID).

Available in a Point System chassis card and a stand-alone form factor,
this new series of 10/100 bridging network interface devices is designed
for both Enterprise and Service Provider applications where users require
a basic level of management information on both the local and remote
devices. This NID will allow users to easily access the management
information through the local unit installed in a managed Point System
Chassis, as the remote unit reports its current operating status back to
a local unit.

Information provided by the remote unit includes link, speed and duplex
status on the copper port as well as link and duplex status on the fiber
port. The same information is available on the local unit along with the
ability to set ingress rate limits on both the copper and fiber ports in
preset increments from 64 Kbps up to full bandwidth.

"The unique management options, along with standard Transition Networks
features such as AutoCross, Auto-Negotiation, Link Pass Through, Far End
Fault, and Auto Link Restore, position this product as the perfect
solution for an entry level remote management requirement," says Patrick
Schaber, Director of Marketing at Transition Networks. "Combined with the
price point of an entry-level managed device, this NID affords all
Transition Networks customers the benefits of remote management."

Product Features

To take advantage of the remote management capabilities, the SRFB devices
should be used in pairs, installed on either end of a fiber link. Both the
local and remote unit can be managed when the local unit is installed in a
managed Point System Chassis. Access to the management information can be
done through Transition Networks' own network management application,
Focal Point(TM), as well as any web browser.

The SFRB includes a Remote Loopback Test feature which can easily set the
remote unit into a loopback mode. This is used to test link integrity and
assist in identifying network problems. At the end of the test, the remote
unit is automatically re-set into a normal operation mode. Another new
feature included in the SRFB is a Copper Link Test. This Link Test is used
in conjunction with Link Pass Through (LPT) when LPT is enabled. The Link
Test is controlled by a button which is accessible on the front of the
device. When the button is depressed, LTP is temporarily suspended so an
installation technician can see the valid copper link LED illuminate. This
is particularly useful when the copper links and the fiber links are being
established at different times.

Product Availability and Configuration

Transition's new SRFB series 10/100 bridging Network Interface Devices are
offered in both chassis card for the Point System(TM) Chassis and a
standalone version in the following configurations:

Chassis Model Stand-alone Model Description
CSRFB1011-100 SSRFB1011-100 10/100Base-TX RJ-45 to
100Base-FX MM ST 2KM
CSRFB1013-100 SSRFB1013-100 10/100Base-TX RJ-45 to
100Base-FX MM SC 2KM
CSRFB1014-100 SSRFB1014-100 10/100Base-TX RJ-45 to
100Base-FX SM SC 20KM
CSRFB1040-100 SSRFB1040-100 10/100Base-TX RJ-45 to
100Base-FX Open SFP
CSRFB1029-100 SSRFB1029-100 10/100Base-TX RJ-45 to
100Base-FX SSF SM 1310TX/1550RX SC 20KM
CSRFB1029-101 SSRFB1029-101 10/100Base-TX RJ-45 to
100Base-FX SSF SM 1550TX/1310RX SC 20KM

Please contact Transition Networks at (800) 526-9267 or visit
www.transition.com for the latest information.

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 (NASDAQ: JCS).

Statements regarding the Company's anticipated performance in 2009 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
Email Contact

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

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