Emergency 999 calls to Derbyshire Police are being answered as normal today.
Equipment failure in the police force’s call handling centre meant that people were asked to only dial 999 in genuine emergencies yesterday.
Nottinghamshire Police dealt with the calls while engineers carried out repairs.
A Derbyshire Police spokesman said: “A faulty fuse caused the alarms at the force’s Central Contact Management Centre to sound and staff were relocated to different buildings to receive calls.
“As a temporary measure, Nottinghamshire Police received Derbyshire’s 999 calls.
“Derbyshire Fire and Rescue Service visited the building as a precaution, but there was no fire.
“Derbyshire police would like to thank the public for their understanding and thank Nottinghamshire Police for their assistance.”