When the external cables reach an exchange enter the building via a large entry plate into an underground room called a cable chamber. In smaller exchanges the cables sometimes arrive in an underground chamber and then are fed to the MDF via a shallow cable trench which is covered by wooden flooring.
Cable entry point showing cable entry points which when
empty are sealed to
prevent ingress of water, gas or vermin.
Rather immaculate cable chamber. The cables enter the
exchange from the
left and then turn upwards to the MDF.
A rather busy Cable Chamber.
MDF cables fed via a cable trench. Note the wooden
flooring to the right, which is
hooked up. They are on hinges and drop down when the hooks at the top are released.
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Last revised: 06 February, 2011