Most of the phones researched have a call timer built in, and most of the timers are programmable. One phone with a built-in call timer had a set limit of two minutes per call before automatic disconnect. The CPC break signals the emergency phone to hang up. Calling all cars. Only one of the phones is capable of dialing into a burglar alarm company's 24-hour central station and communicating critical location information electronically.
Companies have several options.
For example, they can program the phone with this feature to always dial into the central station, or they can use the central station option as a backup when primary numbers go unanswered or are busy. Most central stations are equipped with computer systems to process calls automatically. The equipment also allows the central station to carry on a real-time voice conversation with the caller. Central station personnel are specifically trained to handle emergency situations. They know whom to call and usually have good working relationships with emergency care providers and other safety personnel.