Autoriezed design and installing on computer networks Nexans, R&M, Belden... Installing and maintenance on security systems Installing and maintenance on fire alarms, intruder alarms, CCTV systems, access control, time attendance... Official service for telephones Service for General Electric, Alcatel, Telco... Instalation and programming of telephone switches Installing and programming of SIEMENS, PANASONIC and PHILIPS telephone switches.