Company to Release Earnings One Day Earlier to Avoid Conflicts with Other Conference Calls

BURLINGTON, Mass.--(BUSINESS WIRE)--Oct. 25, 2007--Acme Packet, Inc. (NASDAQ: APKT), the leader in session border control solutions, today announced that its previously scheduled conference call on Wednesday, November 7, 2007 has been rescheduled in order to avoid conflicts with certain other conference calls scheduled at the same time.

The Company will now release financial results for the third quarter ended September 30, 2007 on Tuesday, November 6, 2007 after the market closes. The Company's management team plans to host a live conference call and webcast at 5:30 p.m. eastern time on Tuesday, November 6, 2007 to discuss the financial results as well as management's outlook for the business. The conference call may be accessed in the United States by dialing (877) 260-8900 and using access code "APKT." The conference call may be accessed outside of the United States by dialing (612) 332-0720 and using access code "APKT". The conference call will be simultaneously webcast on the Company's investor relations website, which can be accessed at www.ir.acmepacket.com. A replay of the conference call will be available approximately two hours after the call by dialing (800) 475-6701 and using access code 889984 or by accessing the webcast replay on the Company's investor relations website.

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--across IP network borders. Our Net-Net family of session border controllers supports multiple applications in service provider, large 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 and H.248--and multiple border points--interconnect, access and data center. Our products have been selected by over 420 service providers in 81 countries, including 23 of the top 25, and 76 of the top 100 service providers in the world. For more information, contact us at +1 781.328.4400, or visit www.acmepacket.com.

CONTACT:
Acme Packet
Investor Relations:
Brian Norris, 781-328-4790
bnorris@acmepacket.com
or
Industry Analysts:
Kevin Mitchell, 781-328-4436
kmitchell@acmepacket.com
or
Trade and Business Press:
Connect2 Communications
Rich Williams, 919-554-3532
rmwilliams@connect2comm.com

SOURCE:
Acme Packet, Inc.