Source: https://tendernation.io/opportunities/01a1409f-a101-7132-ac30-0de04ef99e80/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

23 Dec 2025

Deadline

Closed

30 Jan 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 856580-2025

[View official notice](https://ted.europa.eu/en/notice/856580-2025)

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[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)

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