Mavenir and Acme Packet Deliver Legacy and IMS Voice and Messaging Services to Mobile Broadband Networks

RICHARDSON, Texas and BURLINGTON, Massachusetts -

- Partnership reduces cost, time-to-market and time-to-revenue in delivering legacy voice and messaging over 4G and Rich Communication Suite services over 3G

Mavenir Systems, provider of innovative mobile convergence solutions, and Acme Packet(R) (Nasdaq: APKT), the leader in session border control solutions, today announced a reseller agreement that enables the delivery of all of today’s mobile services and new interactive communication services over 2G, 3G and IP-based 4G mobile broadband access networks. The agreement enables Mavenir to combine its Converged Voice and Messaging solutions with Acme Packet’s Net-Net(R) session border controllers (SBCs) to significantly reduce the development costs, time-to-market and time-to-revenue for voice, mobility and rich communications services delivered over fixed and mobile broadband networks. This partnership is currently supporting two Tier 1 mobile service provider customers in Europe and North America.

Mavenir’s Mobile VoIP solution extends Mobile Switching Center (MSC) voice, intelligent network (IN) and Short Message Service (SMS), as IP Multimedia Subsystem (IMS) application servers to offer services consistently across multiple broadband access domains. This eliminates the need for an overlay voice over IP (VoIP) core with potential service parity gaps, accelerating the time-to-market. The combination of Acme Packet SBCs and Mavenir’s Converged Voice solutions also frees service providers from deploying media gateways for networks equipped with 3GPP Release 4 MSCs, reducing the cost and complexity of their networks significantly.

Mavenir’s Rich Communications Suite (RCS) solution, combined with Acme Packet’s Proxy Call Session Control Function (P-CSCF) solution, allows service providers to build global mobile social networks around a powerful set of building blocks-subscriber management, presence, instant messaging, web 2.0 services aggregation and media sharing. Presence fuels revenue-generating services such as enhanced address book, messaging, media sharing, gaming and voice services for both consumer and enterprise users.

Acme Packet Net-Net SBCs connect 3G and 4G mobile subscribers to IMS SIP-based services and applications including voice, messaging, interactive video, gaming and video. In this partnership, these services are delivered from Mavenir mOneTM Convergence Platform. In IMS deployments, Acme Packet SBCs integrate the P-CSCF for SIP signaling control, an Access Border Gateway Function for media control and a Security Front-End Function for both signaling and media. They provide the critical controls to deliver high-quality interactive communications-voice, video and multimedia sessions-and streaming video across 3G and 4G LTE and WiMAX access network borders. At interconnect borders, Acme Packet’s SBCs enable the seamless exchange of VoIP and IMS services across service provider boundaries, reducing costs and enabling new interactive communications requiring end-to-end IP connectivity. Acme Packet’s SBC control functions satisfy requirements in five major areas-security, service reach maximization, service level agreement (SLA) assurance, revenue and cost optimization and regulatory compliance.

“For next-generation technologies such as LTE to be competitive, they must be as cost-competitive as they are innovative,” said Payam Maveddat, Mavenir’s Vice President of Product Management and Partnerships. “Our relationship with Acme Packet directly addresses that need by giving operators a powerful suite of solutions for controlling CAPEX and OPEX. Those savings free up capital and resources to develop the innovative services that grab market share from incumbents and drive sustainable revenue.”

“Our partnership with Mavenir offers an extremely compelling approach for delivering voice and messaging services over mobile IP broadband access networks,” said Seamus Hourihan, Acme Packet’s Vice President of Marketing and Product Management. “Our joint solution provides service providers with the level of service consistency, cost-effectiveness and control required for success.”

About Acme Packet:

Acme Packet, Inc. (NASDAQ: APKT), the leader in session border control solutions, enables the delivery of trusted, first-class interactive communications-voice, video and multimedia sessions-and data services across IP network borders. Our Net-Net family of session border controllers, multiservice security gateways and session routing proxies supports multiple applications in service provider, enterprise and contact center networks-from VoIP trunking to hosted enterprise and residential services to fixed-mobile convergence. They satisfy critical security, service assurance and regulatory requirements in wireline, cable and wireless networks; and support multiple protocols-SIP, H.323, MGCP/NCS, H.248 and RTSP-and multiple border points-service provider access and interconnect, and enterprise access and trunking. Our products have been selected by more than 830 customers in 95 countries. They include 48 of the top 50, and 89 of the top 100 service providers in the world; and 8 of the Fortune 25. For more information, contact us at +1-781-328-4400, or visit www.acmepacket.com.

About Mavenir:

Mavenir’s innovative mobile convergence solutions enable mobile operators to offer subscribers new and enhanced services and applications. We deliver next generation Mobile Voice, Messaging and Presence services from a single converged core, saving CAPEX and OPEX for the mobile operators. Our innovations deliver any service to any device, bridging core network and broadband access generations.

Headquartered in Richardson, Texas, Mavenir has sales, business development and R&D and operations facilities in India, China and Europe. For more information, contact us at +1-469-916-4393 or visit www.mavenir.com.

Acme Packet, Inc. Safe Harbor Statement

Statements contained herein that are not historical fact may be forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Such forward-looking statements may relate, among other things, to effects of the partnership with Mavenir Systems, including the ability to reduce development costs and to allow service providers to build global mobile networks, the level of service, consistency, cost-effective and control the joint solution will deliver to customers and the benefits and advantages of Acme Packet’s products, including any enhancements or new features, new services, and new programs. Such forward-looking statements do not constitute guarantees of future performance and are subject to a variety of risks and uncertainties that could cause actual results to differ materially from those anticipated. These include, but are not limited to: difficulties expanding its customer base; difficulties leveraging market opportunities; difficulties providing solutions that meet the needs of customers; poor product sales; long sales cycles; difficulty developing new products; difficulty in relationships with vendors and partners; higher risk in international operations; difficulty managing rapid growth; difficulty managing our financial performance; its ability to hire and retain employees and appropriately staff its operations; the spending of the proceeds of its capital raising activities; its cash needs; and the impact of new accounting pronouncements and increased competition. Additional factors that could cause actual results to differ materially from those projected or suggested in any forward-looking statements are contained in the Company’s recent filings with the Securities and Exchange Commission, including those factors discussed under the caption “Risk Factors” in such filings.

Mavenir Contact: Kathrine Dela or Yasmin Ezaby Global Results Comms +1-949-608-0276 mavenir@globalresultspr.com www.mavenir.com Acme Packet media/analyst contact: Elizabeth Starr Miller Connect2 Communications +1-874-223-2653 elizabeth@connect2comm.com Acme Packet investor relations: Brian Norris Acme Packet +1-781-328-4790 bnorris@acmepacket.com

Source: Mavenir Systems

Kathrine Dela or Yasmin Ezaby of Global Results Comms, +1-949-608-0276, mavenir at globalresultspr.com; or Media/analyst, Elizabeth Starr Miller of Connect2 Communications, +1-874-223-2653, elizabeth at connect2comm.com for Acme Packet, or investors, or Brian Norris of Acme Packet, +1-781-328-4790, bnorris at acmepacket.com