View all newsletters
Receive our newsletter - data, insights and analysis delivered to you
3 June 2008

Testing and Commissioning Fixed Telephony

One of the main responsibilities of Firstco recently was to test and commission the telephone and public address / voice alarm systems within the new T5 rail station and tunnels.

The phone systems there consist of over 100 analogue telephone lines. These serve general-purpose telephones and lift intercom and passenger help points, among other devises. The public address / voice alarm system provided both passenger information announcements and voice evacuation message in the case of a fire alarm.

One day Firstco’s engineers will be tracking down faults on the speaker lines; the next they will be completing the final drawing showing the connections of the phones in one of the escape shafts in the tunnel.

NEWSLETTER Sign up Tick the boxes of the newsletters you would like to receive. The top stories of the day delivered to you every weekday. A weekly roundup of the latest news and analysis, sent every Friday. The railway industry's most comprehensive news and information delivered every month.
I consent to GlobalData UK Limited collecting my details provided via this form in accordance with the Privacy Policy


Thank you for subscribing to Railway Technology