Provision Of The Reception Service And Attention To The Public Of The Cttc, Including Face-To-Face Attention To Visitors, Management Of The Telephone Switchboard, Access Control Using Dorlet Software, Reception And Dispatch Of Parcels And Couriers, Management Of Keys And Stationery, Rounds Of Visual Checks And Administrative And Logistical Support To The Activities Of The Center, In Accordance With The Plec De Prescriptions Técnicas. Contract Reserved In Accordance With Additional Provision 4A Of The Lcsp.