Calix Selects National Technical Systems


Calabasas, CA - September 1, 2006 - National Technical Systems, Inc. (NASDAQ: (NTSC) (NTS) announced today that it has been selected by Calix to manage Customer Premise Equipment (CPE) testing within its Calix Compatible Program in order to ensure seamless interoperability with the Calix line of access solutions.

At its Santa Rosa, CA Network Architecture & Interoperability Laboratory (NAIL), NTS will independently test and validate interoperability of a wide range of CPE devices with the Calix platforms. "We are very pleased that Calix has selected us to outsource their CPE testing requirements," said Curt Wheeling, NTS General Manager of the NAIL. "NTS has invested significantly in the NAIL facility in recent years, expanding our abilities to simulate carrier networks and test to ensure that any new devices will interoperate with their existing network infrastructure," added Wheeling.

"Certification testing is critical to the deployment of the Calix C7 platform in our customers' networks. Service providers want a choice in procuring CPE for their networks and also demand that the equipment interoperate flawlessly with our platform as new customers are added," said Rick Johnston, Calix Vice President of Business Development. "NTS' unique testing capabilities in the NAIL give us the assurance that our service provider customers can choose from a list of pre-certified CPE manufacturers and know that the equipment will work with our platform."

"In today's market, telecommunications equipment suppliers like Calix focus on improving their core innovation competencies and look to organizations like NTS to help with support activities. When they use NTS, they have access to all the latest test equipment and only have to pay for what they use. At NTS we help our clients achieve significant cost and investment savings in support of their testing needs," stated Osman Sakr, NTS Chief Technical Officer.

About Calix
Calix is the largest telecom equipment supplier focused solely on access solutions for broadband service delivery. Service providers deploy Calix access systems to enable a rich set of information, communication, and entertainment services and to expand their revenue base beyond connectivity. Calix access innovation helps service providers transform their networks from circuit to packet, narrowband to broadband, and to drive fiber deeper into the network. Calix has deployed its solutions in hundreds of service provider networks throughout North America, and has shipped more than two million ports. For more information, visit the Calix website at www.calix.com.

About NTS
National Technical Systems, Inc. is a leading provider of engineering services to the defense, aerospace, telecommunications, automotive and high technology markets. Through a world-wide network of resources, NTS provides full product life-cycle support, offering world class design engineering, compliance, testing, certification, quality registration and program management. For additional information about NTS, visit our website at www.ntscorp.com or call 800-270-2516.

Contact:Derek Coppinger
Director of Corporate Development
National Technical Systems
Tel: 800.270.2516
Fax: 978.263.5734
E-mail: dcoppinger@ntscorp.com
URL: www.ntscorp.com

Agency: Vivian Seal
PR Specialist
The Rankin Group, Ltd.
Tel: 714.832.4100
Fax: 714.832.3211
E-mail: vivian@rankin-group.com
URL: www.rankin-group.com

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