Centro de Tecnología de las Comunicaciones, S.A. (AT4WIRELESS), was established in 1991 as a Test House Laboratory for the Telecommunications terminal equipments and electronic equipment markets. AT4WIRELESS is now a Private Technology Centre and a leader in global solutions in the industrial, technological and services fields. AT4WIRELESS provides testing solutions in wireless technologies such as Bluetooth, WLAN, GSM, GPRS, UMTS, and RFID. AT4WIRELESS has provided the first conformance test system for RFID EPCglobal Generation 2 hardware certification. It has a team of more than 50 experienced staff coming from different branches of engineering and has strong development experience in the following fields: RF hardware, radio software, communication protocol stacks, protocols for intelligent transport systems, automation of measurement and processes, internet, CTI (computer telephony integration), web development, etc.