Allot Delivers Policy Control Solution With HP to Monetize Advanced IP Data Services for Mobile Broadband

Billing and OSS World 2009, LAS VEGAS, Nevada - Joint Offering to Provide Total Solution for Intelligent Charging and Policy Control

Allot Communications Ltd. (NASDAQ: ALLT), a leader in IP service optimization and revenue generation solutions based on deep packet inspection (DPI), announced today that it has cooperated with HP to deliver an integrated solution for mobile operators to deploy intelligent Policy Control and Charging (PCC).

The solution is expected to enable mobile and converged broadband operators to generate and optimize new revenue streams for IP mobile data services supported by application-awareness. Application-awareness is used to identify over-the-top video streaming, VoIP, file sharing, P2P, and other services so that subscribers may realize optimum quality of experience.

This innovative joint offering integrates Allot’s Service Gateway (SG) for policy enforcement and the HP Internet Usage Manager (IUM) for real time charging and policy decision functionality, bringing together best-in-breed components for mobile network operators. The HP IUM product serves as an On-Line Charging System (OCS) and as a base platform for Policy and Charging Rules Function (PCRF). The Allot SG serves as the Policy Control Enforcement Function (PCEF).

The policy control and enforcement is dynamic, subscriber- and application-aware, enabling mobile operators to deliver advanced IP services with different charging rates. This makes the solution a fundamental building block for an intelligent IP network that enforces policy with consideration of subscribers’ service plans.

Mobile network operators can use the solution from Allot and HP to build a complete PCC infrastructure that enables rapid introduction of innovative mobile services with increased revenues. The solution uses 3GPP standards-based interfaces and can be applied to 3G and 4G mobile networks based upon IMS and LTE.

“The introduction of mobile broadband services has led to a flood of mobile IP data that must be properly managed. As mobile broadband becomes more mainstream, the need for dynamic, application-aware policy management and real time charging becomes increasingly critical. The solution from Allot and HP is providing real business benefit” stated Azi Ronen, Allot’s Executive Vice President of Corporate Development.

“Mobile network operators will be able to monetize new services and generate increased revenue with this joint offering,” said Tomas Kovar, IUM Product Manager, Communications and Media Solutions, HP. “This complete solution for policy and charging control is designed to support the delivery of those high-revenue IP services that are most desired by mobile subscribers.”

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 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: +972-9-7619423 jgordon@allot.com PR Contact: Danielle Matthews Calysto Communications Tel: +1-404-266-2060 x27 dmatthews@calysto.com

Source: Allot Communications Ltd.

Allot Communications Contacts: Jonathon Gordon, Director of Marketing, Allot Communications, Tel: +972-9-7619423, jgordon at allot.com. PR Contact: Danielle Matthews, Calysto Communications, Tel: +1-404-266-2060 x27, dmatthews at calysto.com