Multicast Paging And SIP Call

[nolto]

Hello,
A customer of ours wants to broadcast continuous paging to Yealink IP Phones. However, when Paging is active if the phone is called, it does not ring, it only generates a warning in the background, as in the "call waiting" feature.

Is there a way to make a ringtone when the phone receives a call while the paging is broadcasting?
Also, can it be enabled to automatically continue paging when the call disconnect?

Thanks in advance.