Tellabs Adds New Feature Pack and Industry Successes to its Tellabs(R) 6300 System Nodes

HIGH WYCOMBE, England, September 27 -- Both the Tellabs(R) 6325 Edge Node and the Tellabs(R) 6315 Metro Ethernet

Node successfully demonstrated interoperability at the multi-vendor carrier
Ethernet interoperability test completed by EANTC (European Advanced
Networking Test Center). Following the test, Tellabs is participating at the
live interoperability showcase at CEWC (Carrier Ethernet World Congress).

CEWC is the official conference of the Metro Ethernet Forum organised by
IIR in Madrid, Spain, September 26-29, 2006. At the conference Tellabs also
announced the Carrier Ethernet Certification by Iometrix of the Tellabs 6325
node, as well as the launch of the node's Feature Pack 1.1.

The CEWC 2006 interoperability event verified multi-vendor Carrier
Ethernet infrastructures offering business and residential services. This
test explored major new MEF and IEEE standards for the first time, and
implemented more advanced services in the test network. Equipment vendors
verified real-world implementations of Carrier Ethernet standards and
improved key interoperability aspects.

The Tellabs 6325 Edge Node is an award winning (1), compact
Next-Generation Synchronous Digital Hierarchy (NG-SDH) node with very high
density. With FP1.1 the Tellabs 6325 node becomes part of Tellabs(R)
AssuredEthernet(SM) solution as it adds another key application to its
capabilities: the delivery of carrier-class data services. The Tellabs 6325
node offers hard Quality of Service (QoS) at minimum bandwidth consumption
with Multi-Protocol Label Switching (MPLS)-based Ethernet. Furthermore, the
1U high Tellabs 6325 node FP1.1 provides features expected in a
fully-featured Multi-Service Provisioning Platform (MSPP) including Multiplex
Section Protection (MSP) 1+1 network protection, redundant matrices, power
and synchronisation. All this enables carriers to cost-effectively transform
the way networks are built and to offer new profitable services to end-users.

During the award ceremony on Tuesday, September 26th at the Carrier
Ethernet World Congress, Iometrix test laboratories certified that the
Tellabs 6325 Edge Node operating at the User Network Interface (UNI) delivers
Ethernet Private Line (EPL), Ethernet Virtual Private Line (EVPL) and
Ethernet-Local Area Network (E-LAN) services compliant with the Metro
Ethernet Forum (MEF) MEF 9 and MEF 14 technical specifications. Both the
Tellabs 6325 node and the Tellabs 6315 node now provide the assurance of this
certification and are strong network migration solutions for carriers
world-wide.

(1) At this year's Globalcomm 2006 trade show in Chicago, this product
won the Telecommunications Industry Association (TIA) award for "Innovation
in Technology - Optical Networks"

About Tellabs

Tellabs advances telecommunications networks to meet the evolving needs
of users. Broadband solutions from Tellabs enable service providers to
deliver high-quality voice, video and data services over wireline and
wireless networks around the world. Ranked among the BusinessWeek InfoTech
100, Tellabs (NASDAQ: TLAB) is part of the NASDAQ-100 Index, NASDAQ Global
Select Market and the S&P 500. www.tellabs.com

About EANTC

The European Advanced Networking Test Center (EANTC) offers
vendor-neutral network test facilities for manufacturers, service providers,
and enterprise customers. Primary business areas include interoperability,
conformance, and performance testing for Ethernet in enterprise and service
provider environments, Triple Play, MPLS / IP network technologies and
applications. EANTC provides independent network-related services, consulting
and seminars. For more information contact Carsten Rossenhövel, Managing
Director, at +49.30.3180595-0 or via e-mail at [email protected]. For the full
release see http://www.eantc.com. A 16-page, detailed technical test report
is available for download at http://www.eantc.com/cewc2006.

About IIR

IIR is the world's leading knowledge and skills transfer company with a
global network of 47 companies and 112 operating units. IIR provides business
executives with knowledge and skills through training, conferences, seminars,
e-Learning, blended solutions, exhibitions, consulting and mentoring.

IIR's market leading Optical Transmission industry conference portfolio
provides technical forums and networking opportunities for the industry in
EMEA and globally. For more information, visit www.optical-transmission.com

Tellabs(R) and (R) are trademarks of Tellabs or its affiliates in the
United States and/or other countries. Any other company or product names
mentioned herein may be trademarks of their respective companies.

Tellabs UK Ltd

Media Contacts: Beatrice Martin-Vignerte, +44 7884 187763, [email protected]. Investor Contact: Tom Scottino, +1-630-798-3602, [email protected]