Trapeze Networks, a Pleasanton, Calif.-based provider of wireless network equipment and management systems, announced that it has bought Newbury Networks, a firm that specializes in wireless asset tracking. Trapeze hopes the acquisition will help it expand its product portfolio.

Newbury, headquarted in Pasadena, Calif., will remain an independent entity within Trapeze and retain all 16 of its employees. In the past, it has helped manage the transport of health care equipment, as well as supply chain services for Apple, Hewlett-Packard and the National Security Agency.

Trapeze is owned by cable provider Belden, which bought it in June for $133 million. Its past investors include Juniper Networks, Nortel, Oak Investment Partners, Accel Partners and Redpoint Partners.