📋 Tender Overview
In the 90s it was proposed to develop an open standard for critical communications, as an alternative to analog radios; Tetra was proposed from Europe as an alternative to P-25 systems, which is the communications standard in the United States and Canada.
TETRA stands for Trans European Trunked Radio. It is a standard system defined by the European Telecommunications Standards Institute. Its purpose is to unify digital radio interfaces for voice and data communication, and it can be integrated with other emergency and security systems, for example, with the P-25 system used by the National Police and Armed Forces, the DMR system from the fire brigade or to the PoC system via WiFi or LTE.
Currently, the Quito Metro has the TETRA communication network, which integrates the Central Control Post, the 15 stations, the 22 kilometers of tunnel and the fleet of 18 trains. Its connectivity system uses 3 means: Optical fiber, which is the most used, radiant cable and radio frequency; guaranteeing redundancy, in case any of the systems fail.
