One of our clients wants their system to mimic their old phone system. The receptionist receives all calls. At first we had a ring group set up to ring multiple sets. But they want the receptionist to answer all calls. Well most of them anyways. This means when she's on the phone, if another call comes.thourgh she is to put caller 1 on hold answer the phone for caller 2. The only problem is when the second caller calls in, there's no audio beep. She has to look at the phone to see the message incoming call. Then she can answer the second call. Is it possible to have a tone beep when a second caller is calling htek 923 kinda like old call waiting?