Call Waiting enables you to place one call on hold while you answer a second call, then alternate between the two.

Dependin on the device or sofphone you’re using that allows your to have a second incoming call, you will be prompted, asking if you wish to receive the phone call. If you don’t want to hang up the first call, you may switch between the first call and second call by clicking on the calls in the SoftPhone display window.

No, this function is currently not supported.