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Comcast Conducts Industry’s First Live 1Terabit Network Trial with Ciena’s 6500 Converged Packet Optical Solution

  Comcast Conducts Industry’s First Live 1Terabit Network Trial with Ciena’s
  6500 Converged Packet Optical Solution

 Trial demonstrates flexibility and scalability of Comcast’s network to serve
    growing bandwidth demands using Ciena’s WaveLogic Coherent technology

Business Wire

HANOVER, Md. & PHILADELPHIA -- October 22, 2013

Comcast (Nasdaq: CMCSA, CMCSK) and Ciena^® Corporation (Nasdaq: CIEN), the
network specialist, successfully completed a live field trial of a
1Terabit/sec (Tb/s) optical transmission spanning nearly 1,000 km. By
demonstrating the ability to increase the traffic carrying capacity by 2.5
times, this trial showed how Comcast’s existing fiber network can scale to
keep pace with the bandwidth demands of cloud computing, video, and multimedia
applications, as well as data center connectivity. The companies made the
announcement today at the SCTE Tec-Expo taking place at the Georgia World
Congress Center in Atlanta.

The 1Tb/s trial took place during the first week of October over Comcast’s
existing long-haul fiber infrastructure connecting Ashburn, Va. to Charlotte,
N.C. This is believed to be the first trial in which live data traffic was
carried over a 1Tb/s 16QAM super-channel on an existing, commercial network.
At the same time, that network was also carrying customer traffic over 10G,
40G and 100G wavelengths, all coexisting on a mix of flexible and
50GHz-spacedfixed grid channels.

The 1Tb/s trial used Ciena’s 6500 Packet-Optical Platform solution that
combined flexible grid Reconfigurable Optical Add/Drop Multiplexers (ROADM)
with 16QAM coherent modulation to achieve 5b/s/Hz of spectral efficiency over
a distance of nearly 1,000 km of uncompensated ELEAF fiber. Ciena’s next
generation Raman and programmable gain amplifiers, the newest addition to the
WaveLogic intelligent coherent portfolio, provided optimized performance and
system reach. The trial ran in parallel over the same optical infrastructure
that supports a combination of HD video, Internet and voice traffic on
Comcast’s existing 100G national backbone.

“We continue to work with Ciena to leverage our already installed Ciena 6500
platforms to deliver more content, faster Internet speeds and enable new
cloud-based applications for our customers,” said Steve Surdam executive
director, Network Engineering at Comcast Cable. “As we look to continuously
evolve our network infrastructure, Ciena’s high-capacity Terabit optical
technology will give us the flexibility and scalability required to future
proof our network to deliver next-generation products and services for our
customers.”

The success of this trial was made possible via the joint collaboration of
Ciena and Comcast throughout the entire process – from strategy and
engineering to configuration and execution.

“Innovative service providers like Comcast know that they can rely on Ciena’s
field-proven, industry-leading converged packet optical technology to keep
pace with today’s surging bandwidth requirements. Our technology goes beyond
scaling bandwidth to make the network more intelligent and responsive to
service and application needs, which is the basis of Ciena’s OP^n architecture
approach and increasingly critical in today’s highly competitive environment,”
said Francois Locoh-Donou, senior vice president, Global Products Group at
Ciena. “This trial is a significant accomplishment because it took place
across a production network and demonstrated our ability to extend the
scalability benefits of new coherent modulation techniques beyond metro and
regional distances.”

At the SCTE event, Ciena (booth #1326) will showcase advanced packet optical
solutions, including the 6500 shelf equipped with the Terabit super-channel
technology used in the trial with Comcast.

Comcast has been leveraging Ciena’s coherent 40G and 100G technologies across
its national fiber network since 2009. Ciena’s packet networking solutions
also support Comcast’s Metro Ethernet services offering.

About Comcast Cable

Comcast Cable is the nation's largest video, high-speed Internet and phone
provider to residential customers under the XFINITY brand and also provides
these services to businesses. Comcast has invested in technology to build an
advanced network that delivers among the fastest broadband speeds, and brings
customers personalized video, communications and home management offerings.
Comcast Corporation (Nasdaq: CMCSA, CMCSK) is a global media and technology
company. Visit www.comcastcorporation.com for more information.

About Ciena

Ciena is the network specialist. We collaborate with customers worldwide to
unlock the strategic potential of their networks and fundamentally change the
way they perform and compete. Ciena leverages its deep expertise in packet and
optical networking and distributed software automation to deliver solutions in
alignment with OP^n, its approach for building open next-generation networks.
We enable a high-scale, programmable infrastructure that can be controlled and
adapted by network-level applications, and provide open interfaces to
coordinate computing, storage and network resources in a unified, virtualized
environment. For updates on Ciena news, follow us on Twitter @Ciena or on
LinkedIn http://www.linkedin.com/company/ciena. Investors are encouraged to
review the Investors section of our website at www.ciena.com/investors, where
we routinely post press releases, SEC filings, recent news, financial results,
and other announcements. From time to time we exclusively post material
information to this website along with other disclosure channels that we use.

Note to Ciena Investors

Forward-looking statements. This press release contains certain
forward-looking statements based on current expectations, forecasts and
assumptions that involve risks and uncertainties. These statements are based
on information available to the Company as of the date hereof; and Ciena's
actual results could differ materially from those stated or implied, due to
risks and uncertainties associated with its business, which include the risk
factors disclosed in its Report on Form 10-Q, which Ciena filed with the
Securities and Exchange Commission on September 11, 2013. Forward-looking
statements include statements regarding Ciena's expectations, beliefs,
intentions or strategies regarding the future and can be identified by
forward-looking words such as "anticipate," "believe," "could," "estimate,"
"expect," "intend," "may," "should," "will," and "would" or similar words.
Ciena assumes no obligation to update the information included in this press
release, whether as a result of new information, future events or otherwise.

Contact:

Comcast Corporation
Jenni Moyer, 215-286-3311
jenni_moyer@comcast.com
or
Ciena Corporation
Jamie Moody, 877-857-7377
pr@ciena.com