Active headset and speaker together

[IPBX]

Hi All,

Please Is there any way for using speaker and headset in the same time ? Training using is needed.

AND,

How can I avoid drop the call when user switch from speaker to headset while press on speaker button.
1. User answer a call through headset
2. User switch on the speaker
3. User switch off the speaker on pressing speaker button call is dropped.
(I know that if user use headset button, the call will be active on headphone without drop the call, but I would like avoid dropping the call)

Context :
Phone : T27G series
Headphone : Jabra + ES36H
Firmware : 52.82.0.20


Best,