I have mentioned on the
Police Story thread reading
Credible Witness: Paranormal Police Stories by Andy Gilbert.
One of the stories involved is actually railway based. More specifically signal box based. Even more specifically, Betley Signal Box, near Crewe (don't get too excited, Escargot).
Basically, the British Transport Police control at Birmingham receive a call from ambulance control that an emergency call has been received from this box, but the call was disconnected without the caller speaking. There are another three calls from the same signal box - but a voice speaks only once, saying, 'ambulance please'.
BTP then phone the box - that call is answered, but no-one speaks. On enquiry Network Rail confirm that the number is correct but that the signal box in question has not been used for several years. BTP make a further call to the box, the call is answered - a train is heard in the background and the person on the other end identifies themselves as a signaller - but their voice is described as 'strange', and the call is disconnected before the reason for the emergency call can be ascertained.
The peelers eventually visit the site in question - but turns out that the signal box no longer exists, having been ‘demolished’.
Notes: A quick online search suggests that the signal box was not demolished, as such, but closed in 2004, dismantled and moved elsewhere. The events related above allegedly took place in April 2011.
I don’t think having a phone number still registered to an obsolete site is as anomalous as it might initially appear – not within the context of a large and complex industrial network.