The Metropolitan Police Authority has put out a tender for a new command and control system.
The procurement will be formed in two parts, covering the software and its integration into the current operating environment.
A spokesman from the Met said the cost range for the tender had not been released, but the police authority would be issuing a figure later this month.
The Metropolitan Police Authority said it will form a framework to allow other UK emergency services to procure IT in a way that best fits their environment.
Metropolitan Police CIO Ailsa Beaton recently spoke to Computer Weekly about the system. "I am very much aware that my P45 could be on the line with this. It is important because it is the system that co-ordinates someone calling for help and the police officer turning up," she said.
"At the moment the system is 30 years old. So we are deciding whether to buy a brand new one or keep the system but upgrade it to make it more modern." New functionality will include an ability to map and transmit video feeds, Ailsa Beaton said.