Deutsche Telekom's Recents Field-Trial Breakthrough Accomplished Using Vertel's Network Management Solutions

Vendor-Independent management for Optical Transmission Networks Spells Greater Flexibility and Leverage for Major Telecommunications Carriers

Woodland Hills, CA., August 10, 1999 – Vertel® (NASDAQ:VRTL), a leading global provider of multi-management solutions for telecommunications networks, today announced that one of its flagship software products played a crucial role in the success of a recent multi-vendor European field trial for dense wavelength-division multiplexing (DWDM). Deutsche Telekom, Europe’s number one telecommunications company and the third largest carrier in the world, was responsible for the implementation of the management system.

“Proving the viability and effectiveness of vendor-independent management is a great benefit to the entire carrier community. We’re proud of the fact that our work with Deutsche Telekom will open the door to a new level of business opportunities and efficiencies for the carrier market,” said Bruce Brown, president and CEO of Vertel. “We look forward to working with major carriers worldwide to help them reap the benefits of vendor-independent network management.”

“Vertel’s track record for providing standards-based interoperability solutions made them the natural choice for Deutsche Telekom,” said Georg Lehr, responsible for Deutsche Telekom’s activities in the project. “We needed a breakthrough solution to tackle this problem and Vertel delivered.”

The trial, which began in Fall 1998 and ended in late Spring 1999, was conducted using a prototype fiber optic network extending over 500-km (311miles), connecting sites in Germany and Austria. The study aimed to validate the telecommunications management network (TMN) management interface, which was developed within the research project to allow for vendor-independent management of wavelength division multiplexing (WDM) network elements. The TMN network management system, developed by Deutsche Telekom and based on Vertel’s industry leading TMNTelecore platform, was responsible for network element identification; configuration management of network elements through a series of graphical user interfaces (GUIs); and fault management to detect, correlate and isolate alarms throughout the network.

Vertel’s TMNTelecore Management Development Environment (MDE), which is being used by more than 25 industry leading customers worldwide, was chosen for its ability to seamlessly connect network elements from various vendors with a TMN-based network management system. Vertel’s comprehensive TMNTelecore products enable application providers to streamline the creation and delivery of integrated carrier-grade telecom services.

“It is extremely gratifying to have played such a key role in this prestigious and ground-breaking study,” said Brown. “We are excited to be recognized by international telecommunications innovators like Deutsche Telekom for what we do best – make complex and diverse network architectures work together.”

About Vertel Corporation

Vertel is a leading global provider of telecom network management software and solutions that support multiple management technologies. These solutions provide public and IP network operations support systems (OSS) infrastructures, the key components required for end-to-end network and service management with carrier-grade quality of service. Vertel delivers telecom management solutions worldwide to service providers, network operators, telecom equipment manufacturers, independent software vendors and systems integrators. Vertel also delivers turnkey management applications that fit individual customer requirements through their Professional Services Organization. The Company is based in Woodland Hills, California and has sales offices throughout the world.

About Deutsche Telekom

Deutsche Telekom is a corporate group, with comprehensive expertise throughout the entire telecommunications spectrum. Deutsche Telekom is the leading telecommunications company in Germany. The innovative Deutsche Telekom Group is developing the markets of the future, concentrating on the convergence of fixed and mobile telephony, as well as Internet and online applications. The company is a global player and serves its customers with its representative offices, affiliated companies and joint ventures in over 65 countries around the world.

CONTACT VERTEL:

For corporate information:

Sandy Christopher
(818) 227-5735
email: sandy-christopher@vertel.com

For product information:

Darrin Stone
(818) 227-1451
email: darrin-stone@vertel.com

Contact Ketchum:

Rob Goodman
(916) 449-6168
email: rob.goodman@ketchum.com

Vertel is a registered trademark of Vertel. All other trademarks are the property of their respective owners.

“Safe Harbor” Statements under the Private Securities Litigation Reform Act of 1995: Except for the historical information presented, the matters discussed in this news release are forward looking statements that involve risks and uncertainties, including timely and successful development of products and technologies; successful introduction and customer acceptance of new and enhanced products and technologies in existing and new markets; the possible development and introduction of competitive products and new and alternative technologies; pricing, currency and exchange risks; governmental and regulatory developments affecting Vertel and its customers; the ability to identify, conclude, and integrate acquisitions on a timely basis; the ability to retain and attract key personnel; and other risks detailed from time to time in public disclosure filings with the U.S. Securities and Exchange Commission (SEC) by Vertel, including, but not limited to, the Annual Report on Form 10-K for the year ended December 31, 1998 and the Quarterly Report on Form 10-Q for the quarter ended March 31, 1999.

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