Progress Tone 1 Beep System requests authorization code. 2 Beeps System requests account Code. Ringing The system has different rings to identify the type of incoming call. The system contains a VRU that is used to notify the STE user of features and call status. The VRU is heard through the handset.
Some typical phrases are.
It is not necessary to be repeated 3 times before proceeding with a function. Dial tone returned. Dial tone returned. Key undesired number. Dial tone returned.