RNS Number:7541R
Marconi Corporation PLC
06 November 2003


           
                                                                Press enquiries:
                  Joe Kelly tel: + 44 207 306 1771; email: joe.kelly@marconi.com
           
           
                                                             Investor enquiries:
                                    Heather Green tel: + 44 207 306 1735; email:
                                                       heather.green@marconi.com
           
  MARCONI DELIVERS FIRST UNITS OF ITS NEW OPTICAL MULTISERVICE METRO PLATFORM   

 A brand new platform combining efficient aggregation, switching and transport, 
              and providing a wide range of new broadband services              


LONDON - November 6, 2003 - Marconi Corporation plc (London MONI and Nasdaq:
MRCIY) today announced the general availability of its optical multiservice
metro 16-64 platform, fulfilling the rollout plan unveiled earlier this year and
enhancing further Marconi's leadership and innovation in optical networking.
Marconi's new optical multiservice platform provides carriers with a flexible,
cost-effective platform to deliver increasing volumes of data services, without
compromising existing revenue-generating legacy services.

The Marconi multiservice metro 16-64 platform is designed for flexible
deployment in a range of applications. It is a high-density, full-connectivity,
service delivery platform as well as a compact, high-capacity traffic
aggregation and switching device. It allows operators to support increasing
levels of data traffic seamlessly alongside existing voice and other services
while substantially reducing network costs.

The new platform integrates seamlessly with Marconi's optical core and metro
Wavelength Division Multiplexing (WDM) solutions and is first to offer new
International Telecommunication Union (ITU)-approved data enabling capabilities
These capabilities allow carriers to offer variable bandwidth services to
customers, making their network more flexible and cost effective.

The Marconi multiservice metro 16-64 is currently being shipped to customers for
trials and is a brand new platform that forms the bedrock of Marconi's
next-generation, optical Synchronous Data Hierarchy portfolio.

ENDS/...

Notes to Editors


About Marconi Corporation plc

Marconi Corporation plc is a global telecommunications equipment, services and
solutions company. The company's core business is the provision of innovative
and reliable optical networks, broadband routing and switching and broadband
access technologies and services. The company's customer base includes many of
the world's largest telecommunications operators.

The company is listed on the London Stock Exchange under the symbol MONI and on
NASDAQ under the ticker MRCIY. Additional information about Marconi Corporation
can be found at www.marconi.com.

This press release contains forward-looking statements with respect to products,
partners, customers, future growth and other matters. Please refer to the Form
20-F report and Form 6-K reports filed by Marconi Corporation plc with the
United States Securities and Exchange Commission for a discussion of risks that
could cause actual results to differ materially from such statements.



                      This information is provided by RNS
            The company news service from the London Stock Exchange

END
MSCUUGACGUPWGUQ