Emergency Dispatch Encoder
The Model 25 is an instant call encoder. It is used in airports, fire and emergency centers to call out pager users with the press of a single button or through the Computer Aided Dispatch interface.

Each instant call key is programmable and can alert a single pager or team of pager users. Different types of pager may be combined in the same system, including both analog (5-tone) and digital (POCSAG) pagers.