MCI Provides Fully-Managed Private IP And VoIP Convergence Solution For Europe's Leading Patent And Trademark Attorneys

Convergent technologies allow Marks & Clerk to benefit from an enhanced
and common IT infrastructure across its UK and European offices

READING, United Kingdom, 06 July 2005 - MCI, Inc. (NASDAQ: MCIP) today announced that it has provided Marks & Clerk, Europe's leading patent and trademark attorneys, with a Private IP network, creating a common IT infrastructure across its UK and European offices. Marks & Clerk selected MCI Private IP as part of a network migratory process that extends the longstanding relationship between the two companies.

"Over the past year we have undertaken an extensive rebranding exercise to effectively confirm our position as Europe's major patent and trademark attorneys in the field of securing and registering IP rights and managing IP portfolios, as well as offering IP legal services. Out of this came the need for a common IT system across the group, to optimize the performance of our line of business applications, improve the network and service to end users and lower overall costs." said Tim Roche, Group IT Director, Marks & Clerk.

MCI's Private IP Solution, a network-based MPLS VPN service, best matched this requirement since it offered a simple, cost-effective transition path from a traditional data network to contemporary IP networking with the option of using the existing frame relay wide area network (WAN) equipment to access the MCI Private IP network. By using MPLS technology, Marks & Clerk can utilise a single connection for all of their network traffic regardless of protocol (Frame Relay, ATM or IP).

"It enabled us to take advantage of the convergence of voice and data over a single network, allowing us to consolidate disparate services with one major provider, facilitating greater visibility and management of overall costs, and providing our workforce with greater mobility, enhanced office productivity and consistency of service," said Roche, "The truly global reach of MCI's network, enabling us to potentially connect at any point on the globe, underpinned by their superior SLAs and MCI's MPLS expertise were key factors in our decision to select MCI as the provider of this service."

"Marks & Clerks required a complete solution not just a product. By providing them with a fully managed solution, they can expect a guaranteed service from MCI, which is responsive and scalable to their needs and expansion plans," said Stuart Crazon, Vice President of Sales and Service for MCI in the UK and Ireland. "It eliminates the immediate requirement to increase the number of skilled in-house networking staff and ensures a predictability of the total solution costs."

MCI Private IP delivers the ability to intelligently converge and prioritise voice services, enterprise applications, as well as data and video traffic over a single seamless network connection, increasing simplicity and ease of use. MCI Private IP is a certified Cisco Powered Network service. Direct access to the global MCI Private IP network is currently available in more than 70 countries across Europe, the Americas, Asia Pacific and the Middle East.

Private IP services represent a core element of MCI's extensive portfolio of managed and fully managed services in voice, data and IP. Offering a comprehensive range of managed voice and conferencing services, managed data networking services, as well as managed hosting and managed security solutions, MCI is a global leader in enabling customers to leverage advanced network services for their mission critical business processes and applications. MCI's service management enables for significantly increased operational efficiency, scalability and flexibility while making communications more secure and simple.

About Marks & Clerk
Marks & Clerk Patent and Trade Mark Attorneys is the UK's largest firm of patent and trade mark attorneys with a network of 12 UK offices in London, Cambridge, Birmingham, Cheltenham, Edinburgh, Glasgow, Leeds, Leicester, Liverpool, Manchester, Oxford and St Albans as well as overseas offices in Alicante, Hong Kong, Luxembourg, Ottawa and Toronto. Marks & Clerk Patent and Trade Mark Attorneys has experts who cover all fields of industry including information technology and the Internet, biotechnology and pharmaceuticals, electronics, engineering, retail, and design and advertising. Clients range from the largest multinational corporations through to private individuals. Marks & Clerk has an association with a Marks & Clerk Solicitors who advise on all aspects of IP law from litigation to commercial matters. The attorneys work alongside the solicitors to deliver a fully integrated IP service to clients. Marks & Clerk Patent and Trade Mark Attorneys has topped the Managing Intellectual Property World IP survey, in both the patent and trade mark categories, every year since 1997. For more information contact Jo Colton, Group Marketing Manager on 020 7420 0103 or jcolton@marks-clerk.com

About MCI, Inc.

MCI, Inc. (NASDAQ: MCIP) is a leading global communications provider, delivering innovative, cost-effective, advanced communications connectivity to businesses, governments and consumers. With one of the most expansive global IP backbones and wholly-owned data networks, MCI develops the converged communications products and services that are the foundation for commerce and communications in today's market. For more information, go to www.mci.com.