erp the automatic voice prompting of the defibrillator can be remotely de activated by the erp so as not to distract the rescuer from the instructions given by the erp while coaching the rescuer via the speakerphone capability in the defibrillator the erp can utilize the responsive feedback prompting functionality of the device to provide more accurate coaching of the rescuer it is well known however that cell phone and other wireless communication methods are not especially reliable even under the best circumstances and are often completely unavailable in industrial facilities basements etc thus it is important to provide a means of automatically reverting to the mode wherein the device provides all responsive feedback prompts to the user when the processor detects that the communication link has been lost additional prompts will also be provided to the user to assuage any concern they might have that the connection to the human expert has been lost e g u201c communication has been temporarily lost to 911 personnel don 39 t worry this aed is able to perform all steps and help you through this procedure u201d when a communication link has been lost the device will preferably automatically begin recording all device and patient status as well as all audio received by the built in microphone if the communication link is subsequently reacquired the device will preferably automatically transmit the complete event including patient device and audio data acquired during the time communication was not available providing erp valuable data to help in their medical decision making the erp may remotely control the.