(Telecompaper) The GSMA confirmed that mobile network equipment vendors Ericsson, Huawei, Nokia and ZTE have successfully completed an assessment of their product development and lifecycle management processes using the industry body's Network Equipment Security Assurance Scheme (NESAS). The NESAS scheme is jointly led by 3GPP and the GSMA and is open to all vendors of network equipment products that support 3GPP-defined functions with a view to providing a security assurance framework that improves security levels and transparency across the mobile industry.