Acme Packet is one of the companies I keep pretty close tabs on in the unified communications spaces. Yesterday they announced another customer win with Momentum Telecom Wholesale. . With Acme Packet’s SBCs, Momentum delivers secure VoIP services, while leveraging control over its network and maximizing its service reach and potential. Momentum Telecom Wholesale offers its VoBB (Voice over Broadband) services to independent cable operators and other resellers throughout the U.S., with its voice business displaying growth of over 400% so far in 2007.

Acme Packet Propels Momentum Telecom Wholesale’s Digital Voice Service
Acme Packet Net-Net session border controllers increase Momentum’s security, quality and interoperability

BURLINGTON, MA, MAY 22, 2007 — Acme Packet® (NASDAQ: APKT), the leader in session border control solutions, today announced that Momentum Telecom Wholesale has selected Acme Packet’s Net-Net® session border controllers (SBCs) to secure and extend its private-label digital voice (VoIP) services for business and residential customers. With Acme Packet’s SBCs, Momentum delivers secure VoIP services, while leveraging control over its network and maximizing its service reach and potential. Momentum Telecom Wholesale offers its VoBB (Voice over Broadband) services to independent cable operators and other resellers throughout the U.S., with its voice business displaying growth of over 400% so far in 2007.

To protect and secure its network, Momentum Telecom relies on Acme Packet’s Net-SAFE® security architecture to deliver topology hiding, denial of service (DoS) attack protection and access control. Acme Packet’s admission and overload control features also prevent non-malicious traffic overloads, ensuring network availability and improving call quality. Adaptive hosted NAT traversal supported by the Net-Net platform enables Momentum’s services to reach endpoints behind firewall and NAT devices at the customer premises. Acme Packet’s SIP header manipulation feature allows Momentum to address interoperability challenges and maximize service reach.

“At Momentum, our most important selection criterion is reliability, in both the equipment we use and the partners we work with,” declared Hilaire deSa, Momentum Telecom’s CTO. “Acme Packet has been a rewarding choice in that respect, with the Net-Net SBCs enabling us to provide a high level of quality and security for our network and our customers.”

“Momentum Telecom’s turnkey VoBB wholesale service offers cable operators the opportunity to increase revenue and customer loyalty with a high-quality telephony service,” explained Seamus Hourihan, Acme Packet’s vice president of marketing and product management. “Momentum selected Acme Packet because our SBCs address the critical security, quality and interoperability issues that service providers face in offering these essential VoIP services.”

About Acme Packet
Acme Packet, the leader in session border control solutions, enables service providers to deliver trusted, first class interactive communications—voice, video and multimedia sessions—across IP network borders. Our Net-Net family has been selected by 390 service providers in 77 countries to satisfy critical security, service assurance and regulatory requirements in wireline, cable and wireless networks. Our customers include 23 of the top 25, and 75 of the top 100 service providers in the world. These deployments support multiple applications—from VoIP trunking to hosted enterprise and residential services to fixed mobile convergence; multiple protocols—SIP, H.323, MGCP/NCS and H.248; and multiple border points—interconnect, access network and data center. For more information, contact us at +1 781.328.4400, or visit www.acmepacket.com.

About Momentum Telecom Wholesale
Momentum Telecom Wholesale is a residential and business digital phone service provider based in Birmingham, Alabama. The wholesale division of Momentum Telecom offers private label solutions for independent cable operators and municipalities to provide the highest quality digital telephone service to their customers. For additional information on Momentum Telecom Wholesale, visit www.momentumwholesale.com.

Acme Packet 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 our position in the session border control market, our expected financial and operating results, our ability to build and grow Acme Packet, the benefits of our product, and our ability to achieve our goals, plans and objectives. Such forward-looking statements do not constitute guarantees of future performance and are subject to a variety of risks and uncertainties that could cause our actual results to differ materially from those anticipated. These include, but are not limited to: difficulties in growing our 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, and increased competition. Additional factors that could cause actual results to differ materially form those projected or suggested in any forward-looking statements are contained in our recent filings with the Securities and Exchange Commission, including those factors discussed under the caption “Risk Factors” in such filings.