Released on = March 2, 2007, 2:56 am

Press Release Author = Vierling Communications GmbH

Industry = Telecommunications

Press Release Summary = Transport carrier chooses quality test system from Vierling

Press Release Body = Ebermannstadt, Germany - February 26, 2007. MR.NET, a transport
carrier based in Flensburg, Germany, is now using Vierling's TiQoS platform (Testing
in Quality of Service) to ensure that it delivers consistently high-quality
services. TiQoS allows continuous end-to-end quality tests in IP-based networks and
classic telecommunications and data networks (time division multiplexing, TDM).
MR.NET has installed ten TiQoS remote test units (RTUs) throughout Germany,
including five RTUs in its own network and five in customer networks.

Voice quality from the customer's perspective
MR.NET provides services ranging from termination to end-user invoicing to providers
of voice and multimedia services throughout Germany. Using TiQoS, MR.NET can monitor
the transmission quality through its own transit network. More importantly, the
company can detect disruptions promptly and take action as required. TiQoS performs
network and voice quality tests based on voice calls that the system makes between
different RTUs. The RTUs are installed in MR.NET's network and in customer networks.
TiQoS RTUs are connected like end users to make it possible to assess voice quality
from the customer's perspective.

Powerful and reliable
"TiQoS allows us to continuously monitor the quality of our networks", explained
Horst Bülck, managing director of MR.NET. "We can also offer dependable and neutral
data to our customers to clearly reveal the sources of any quality issues. The
Vierling solution includes powerful test programs that are tailored to our needs to
deliver precise, dependable results."

Future expansion
Bülck believes in the future growth potential of MR.NET and intends to continue
working with Vierling: "MR.NET is a provider of quality services in the area of
triple play. Vierling was able to provide us with very powerful technology and get
it up and running in only two days. As our network grows, we will continue to expand
the TiQoS system."

About MR.NET
MR.NET Services GmbH & Co. KG is a subscriber network operator with its own
carrier-class network infrastructure and network interconnections. As a systems
house, MR.NET offers triple play solutions to cable network operators. These
solutions include voice and multimedia services as well as other specialized
services such as operation of switching equipment, process management and end-user
invoicing. MR.NET also offers services in the areas of clearing and intelligent
networks (INs) to other subscriber network operators. MR.NET helps its customers to
avoid expensive investments and personnel requirements. For additional information,
visit www.mr-netservices.de.

About Vierling
The Vierling Group is based in Ebermannstadt, Germany near Nuremberg and offers
customized communications equipment, test equipment and electronic manufacturing
services (EMS). Vierling Communications GmbH has a product line that includes GSM,
CDMA and UMTS gateways to enable efficient interconnectivity between mobile radio,
VoIP and fixed networks as well as stationary and portable test and measurement
solutions for telephone, DSL and broadband networks and IP-based services. Vierling
Production GmbH develops and manufactures electronic equipment ranging from
individual printed circuit boards to complex electronic systems for companies in
diverse industries. The Vierling Group has two independent subsidiaries: Vierling
Communication SAS based in Plaisir, France near Paris and Vierling Communications
Inc. based in Tarrytown, New York (USA). The company is represented by sales
partners in more than 40 countries. For additional information, please visit
www.vierling-group.com.

http://www.vierling.de/www_vierling/gsm_gateways_overview-dt_38_37_11_f.htm

Web Site = http://www.vierling-group.com

Contact Details = Press Contacts
Vierling Communications GmbH
Dr. Markus Diehl
Director Marketing
Pretzfelder Straße 21
91320 Ebermannstadt
Germany
Phone: +49 (0) 9194 / 97 - 0
Fax: +49 (0) 9194 / 97 - 105
Email: marketing@vierling.de