MAINTENANCE OF OPTICAL FIBER NETWORKS FOR THE SITE OF THE MINISTRY OF INTERIOR (MINISTRY OF INTERIOR BUILDING IN SABHAN – WIRELESS COMMUNICATION NETWORK “ALNTRA” – GOVERNORATE SECURITY DIRECTORATE – SOME BUILDINGS OF SECTORS & PUBLIC DEPARTMENTS IN THE MINISTRY – SOUTHERN BORDER CENTERS – SITES OF THE GENERAL DIRECTORATE OF INFORMATION SYSTEMS AT THE GENERAL DIRECTORATE OF COMMUNICATION ENGINEERING