STN - Stornoway VOR
Doh!!
FWIW a bit of understanding how the system works at MUAC and other modern centres might explain things.
It is possible to access almost any info that ATC needs via the track block associated with any flight. Type, airspeed FL and ROC are all available. This removes athe need for a lot of R/T exchanges. A few minutes before the flight enters a sector the track symbol will begin to flash. When contact is established the controller will "assume" the flight thereby bringing the track block to the same level of brightness as the others under his control. At the same time, the track block on the previous sector will dim, indicating that it is no longer under his control.
This makes two R/T calls redundant - the acknowledgement of the QSY, and the acknowledgement of the initial call to the sector. In busy periods this can stack up considerably.
Be assured this will all have been looked at, possibly even a number of simulations run at Bretigny to discover what influence this has on a controller's workload and performance