
SISS maintenance across the GWR network
Planned and corrective maintenance of CCTV, CIS, PA and Help Points at managed stations and depots, with a customer helpdesk, CCTV downloads and the asset database.
Customer Information Systems
Customer information system (CIS) display renewal and enhancement, with the civil, electrical and mounting works that go with it.
Overview
A customer information system (CIS) presents live train running and service information on passenger information displays. TDM renews and enhances CIS on the operational railway, from rolling display renewals to enhancement programmes across groups of stations.

Survey and design
TDM surveys each display location for the existing equipment, migration requirements, data connectivity, electrical capacity, containment and access restrictions. The design responds to those constraints, and where a display cannot be mounted on a standard bracket, TDM designs bespoke bracketry for the structure.
Displays and mounting
The displays themselves are third-party equipment, in some programmes supplied by the customer. TDM’s scope is everything that gets them into service: foundations and civil engineering, containment, cabling, electrical installation, mounting and bracketry.
Installation and handover
TDM installs, tests and commissions each display, then hands the works over with full O&M documentation.
TDM also installs and configures the CIS terminal servers behind the displays.
Why TDM
Real-time passenger information stayed live throughout the works on TDM's CIS programmes.
TDM answers for the whole installation, so there is one point of responsibility.
Enhancement programmes across many stations were planned, consented and delivered as one programme.
Projects

Planned and corrective maintenance of CCTV, CIS, PA and Help Points at managed stations and depots, with a customer helpdesk, CCTV downloads and the asset database.

Public Address and customer information systems at five Island Line stations, connected by 4G and a Wi-Fi bridge in place of new cable routes.

CCTV, customer information system displays and Help Points delivered as one installation under ES4 and ES5 design and Network Rail Landlord's Consent.