Hi
Sure: this facility is possible via intrusion service. Be carefull this intrusion methode connect microphone and hear.
The intrusion is controled by the phone category.
In BC9, the ACD intrusion is made in silcence, while the intrusion with normal phone will make a repetitive bip
There is some patches in BC9 to remove the bip, but there is an ASPAP in BC11/BC12