Source: https://tendernation.io/opportunities/01a14099-75c1-715d-bc08-44d6c68fb147/spain-communications-system-maintenance-services-servicio-para-la-renovacion closed ES open procedure # Communications system maintenance services – servicio PARA la renovación del sistema integrador de audio (sia) del puesto de control central de metro de madrid [Metro de Madrid, S.A.](https://tendernation.io/buyers/metro-de-madrid-sa) Estimated value €3,282,387 Published 30 Jan 2026 Deadline Closed 11 Feb 2026 ## Who can bid - Open procedure Anyone can submit a full tender; there is no shortlisting stage. ## About this tender Proyecto para la renovación del Sistema Integrador de Audio (SIA) del Puesto de Control Central de Metro de Madrid ## CPV classification Communications system maintenance services Telecommunications services IP telephone services Digital transmission apparatus Radio and telephone control system Radio equipment Telecommunications equipment and supplies Servers Source Tenders Electronic Daily (EU) · Notice 69195-2026 [View official notice](https://ted.europa.eu/en/notice/69195-2026) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. Free to start. [Track tenders free](https://tendernation.io/register) [Buyer profile Metro de Madrid, S.A.: past awards and live tenders](https://tendernation.io/buyers/metro-de-madrid-sa) [Sector More Repair & maintenance services tenders](https://tendernation.io/sectors/repair-maintenance) ## More tenders like this [Repair and maintenance services of building installations – Marché d'exploitation des Installations de chauffage, de climatisation, traitement d'eau, de vapeur et de groupes électrogènes aux Centres Hospitaliers de Romorantin-Lanthenay et Vendôme-Montoire Type P1-P2-P3 · CH Blois Etablissement support du GHT Santé 41 · 30 days left · 18 Nov 2026](https://tendernation.io/opportunities/01a156a9-6183-7217-9df5-7eaf0f5048fd/france-repair-and-maintenance-services-of-building-installations-marche-dex) [Repair and maintenance services of machinery – OC éénmalig groot onderhoud/herstel van trekkasten · Universiteit Antwerpen · 29 days left · 17 Nov 2026](https://tendernation.io/opportunities/01a156aa-0d29-7236-a054-8185a003e295/belgium-repair-and-maintenance-services-of-machinery-oc-eenmalig-groot-onder) [Repair and maintenance services of building installations – Exploitation, maintenance et entretien des installations techniques et gestion des énergies des juridictions des arrondissements judiciaires de Libourne, Bayonne, Dax et Mont de Marsan · Cour d'appel de Bordeaux · 39 days left · 27 Nov 2026](https://tendernation.io/opportunities/01a156a9-aa66-7290-be0e-4041ceb1e324/france-repair-and-maintenance-services-of-building-installations-exploitatio) [Repair and maintenance services of medical and surgical equipment – Servicii mentenanță preventivă echipamente medicale · Spitalul Clinic de Urgenta SF. Pantelimon · 37 days left · 25 Nov 2026](https://tendernation.io/opportunities/01a156a9-8ec5-71a7-89e3-ac566cee5379/romania-repair-and-maintenance-services-of-medical-and-surgical-equipment-se) [Repair and maintenance services of building installations – ENTRETIEN - MAINTENANCE DES TOITURES TERRASSES DES IMMEUBLES DE L'URSSAF ILE DE FRANCE · Urssaf Ile de France · 35 days left · 23 Nov 2026](https://tendernation.io/opportunities/01a156aa-0cfa-71b5-bde2-6fe071c7e927/france-repair-and-maintenance-services-of-building-installations-entretien) [Repair and maintenance services of firefighting equipment – Raamovereenkomst periodieke keuringen brandpreventie patrimonium Tuinwijk BV · Tuinwijk bv · 30 days left · 18 Nov 2026](https://tendernation.io/opportunities/01a156a9-661c-716a-b40b-4b693c2ca83f/belgium-repair-and-maintenance-services-of-firefighting-equipment-raamoveree)