scope:

This instruction applies to all persons engaged in the maintenance of GSM-R Radio Base Transceiver Stations (BTS), Base Station Controllers (BSC), Transcoder Units (TCU) and Repeater equipment. This instruction defines the maintenance requirements for GSM-R radio equipment in use on Network Rail infrastructure along with the testing requirements where the GSM-R platform is used to support the Interim Voice Radio System.

The document does not include information concerning the Network Switch and Subsystem (NSS) equipment at present.

Purpose

The purpose of maintaining and testing these radio systems is to decrease the incidence of failures through deterioration and to identify potential failures before they become service affecting.