The Purpose Of This Report Is The Justification Of The Different Aspects That Must Regulate The Hiring Through An Open Procedure Of Fixed Voice Communications Services As Well As The Guarantee, Maintenance And Management Associated With The Required Equipment And Systems. Specifically, The Objectives Of The Contract Are: - Technologically Renew Fixed Voice Communications Systems. - Guarantee The Technological Evolution Of Communications Services Consistent With The Evolution Of The Market And The Appearance Of New Needs On The Part Of The City Council. - Provide Greater Voice Communications Services To City Hall Users, Especially Aimed At Allowing Mobility And Teleworking. The Details Of The Contractual Object Appear In The Technical Specifications.