NetScout Systems, Inc., will announce its first quarter fiscal year 2013 financial results for the period ended June 30, 2012 on July 19, 2012, at approximately 7:30 a.m. ET. NetScout Systems will host its corresponding conference call and live webcast on the same day at 8:30 a.m. ET. The numbers for the conference call are (866) 701-8242 (U.S.) and (763) 416-6912 (international). The conference call ID is : 99537074. A replay of the call will be available after 11:30 a.m. ET on July 19 for approximately one week. The number for the replay is (855) 859-2056 for U.S./Canada and (404) 537-3406 for international callers. The conference ID is: 99537074. A live webcast of the conference call will be available on the company's website at http://ir.netscout.com/phoenix.zhtml?c=92658&p=irol-irhome. About NetScout Systems, Inc. NetScout Systems, Inc. (NASDAQ: NTCT) is the market leader in Unified Service Delivery Management enabling comprehensive end-to-end network and application assurance. For 27 years, NetScout has delivered breakthrough packet-flow technology that provides trusted and comprehensive real-time network and application performance intelligence enabling unified assurance of the network, applications and users. These solutions enable IT staff to predict, preempt and resolve network and service delivery problems while facilitating the optimization and capacity planning of the network infrastructure. NetScout nGenius ® and Sniffer ® solutions are deployed at more than 20,000 of the world’s largest enterprises, government agencies, and more than 148 service providers, on over one million physical and 2,000 virtual network segments to assure the network, applications, and service delivery to their users and customers. For more information about NetScout go to www.netscout.com.