BOSTON, Massachusetts, July 21 /PRNewswire/ --

- Report Concludes That Subscriber Behavior Does Not Differentiate
Between Fixed and Mobile Data Networks

BOSTON, Massachusetts, July 21 /PRNewswire/ --

Allot Communications Ltd. (NASDAQ: ALLT), a leader in IP service
optimization and revenue generation solutions based on deep packet inspection
(DPI), announced today that its inaugural Global Mobile Broadband Traffic
Report (http://www.allot.com/globalmobilebroadbandreport.asp) (GMBT)
indicates that worldwide mobile data bandwidth usage has increased
significantly by approximately 30% during the second quarter of 2009. Asia
leads the growth with 36%; Europe posted 28% growth and the Americas 25%. The
Allot GMBT Report, which tracks global IP application usage and growth,
collected data from leading mobile operators worldwide with a combined user
base of more than 150 million subscribers.

(Photo: http://www.newscom.com/cgi-bin/prnh/20090721/353751 )

The report shows how subscribers, particularly heavy data users, do not
distinguish between their fixed and their mobile networks, and seem to expect
the same service from the Internet, irrespective of their access method. By
extension, today's mobile operators face the same challenges as their
wireline counterparts, but with more technological limitations. All of these
problems are exacerbated by the network infrastructure where the cells
themselves can serve as natural bandwidth bottlenecks, often greatly
contributing to network congestion and delay.

According to the Allot GMBT:

    - HTTP browsing is the most popular application globally and
      usage increased by 21%.

    - HTTP streaming is the fastest growing application with a
      usage increase of 58%. This includes streaming sites such as YouTube 
      and Hulu.

    - HTTP downloads, which experienced 34% growth globally, are
      now almost as popular as P2P, and in EMEA have even overtaken P2P in
      popularity.

    - P2P accounts for 42% of bandwidth utilization in the busiest
      cells on the network, but only 21% in the average cell.



"This report enables operators to map out subscriber behavior in all its
complexities," said Rami Hadar, President and CEO of Allot Communications
(http://www.allot.com/). "It highlights how subscribers are really using
their mobile data services and provides an invaluable overview of the
industry and the changes that are taking place as it matures."

The Allot GMBT Report data was collected using the long term reporting
capabilities of Allot NetXplorer (
http://www.allot.com/index.php?option=com_content&task=view&id=46&Itemid=46),
Allot's centralized management and reporting system. The length of the
collection period allows accurate identification of usage trends and
patterns, reducing the influence of temporary events in the monitored
networks.

The full Allot GMBT Report can be found on http://www.allot.com

About Allot Communications

Allot Communications Ltd. (NASDAQ: ALLT) is a leading provider of
intelligent IP service optimization solutions for DSL, wireless and mobile
broadband carriers, service providers, and enterprises. Allot's rich
portfolio of hardware platforms and software applications utilizes deep
packet inspection (DPI) technology to transform broadband pipes into smart
networks that can rapidly and efficiently deploy value added Internet
services. Allot's scalable, carrier-grade solutions provide the visibility,
security, application control and subscriber management that are vital to
managing Internet service delivery, guaranteeing quality of experience (QoE),
containing operating costs, and maximizing revenue in broadband networks.

Safe Harbor Statement

Information provided in this press release may contain
statements relating to current expectations, estimates, forecasts and
projections about future events that are "forward-looking statements" as
defined in the Private Securities Litigation Reform Act of 1995. These
forward-looking statements generally relate to Allot's plans, objectives and
expectations for future operations. These forward-looking statements are
based upon management's current estimates and projections of future results
or trends. Actual future results may differ materially from those projected
as a result of certain risks and uncertainties. These factors include, but
are not limited to: changes in general economic and business conditions and,
specifically, a decline in demand for Allot's products; Allot's inability to
develop and introduce new technologies, products and applications; loss of
market; and other factors discussed under the heading "Risk Factors" in
Allot's annual report on Form 20-F filed with the Securities and Exchange
Commission. These forward-looking statements are made only as of the date
hereof, and Allot undertakes no obligation to update or revise the
forward-looking statements, whether as a result of new information, future
events or otherwise.

Allot Communications Contacts:

    Jonathon Gordon,
    Director of Marketing,
    Allot Communications,
    Tel: +972-9-7628423,
    jgordon@allot.com.

    PR Contact:
    Danielle Matthews,
    Calysto Communications,
    Tel: +1-404-266-2060 x27,
    dmatthews@calysto.com.