Your answer doesn't really explain anything.
Documentation on your Wiki's states,
"Stop Ringing while Busy
Difficult to concentrate with other lines/queues ringing you at the same time?
Under Audio options there is an “Ring when talking (incoming calls)” checkbox.
Uncheck this to focus more on your current call and stop all that ringing. Just be aware that any queue calls or other lines that ring will only blink red in Zoiper! Best used with “Always On Top” above."
"Ring when talking
If you unselect this checkbox, the softphone will no longer make a ringing sound when you are already on the phone and a second call comes in."
We are experiencing the same issue.
I would assume that when Ring when talking IS selected that you will hear the ringing while on a active call. By default this box is UNCHECKED. Meaning that this feature is turned off.
If this feature is turned off then why do we still hear ringing when talking?
Thanks.