Objective: Electronic Auction-Hiring Of Legal Entity Specializing In Technology, Communication Or Telecommunications, For The Implementation And Provision Of Unified Communication Solution Services (Ucaas), With Pabx Contractor Cloud, Based On Sip Protocol, Voop Technology (Voice On Ip), With Integration Of The Fixed Fixed Telephone Service (Fixed Fixed And Fixed Fixed) And Microsoft Teams Existing, According To Specifications And Conditions Of The Notice And Its Attachments.