Is it possible to add a signal when transferring a call in aster?

Question

Asterisk

There is an office Aster and a lot of internal numbers. When transferring a call from one internal subscriber to another, no signals and notifications appear, you have to get out by voice ("transfer", "transfer", "one-two-three")
Picked the Aster configs, but could not figure out how to do this . At the moment, the only right thought seems to be to attach some wav thread to the beginning of the call, 1-2 seconds long with a signal.

Maybe the old-timers of Habr can help with this problem?

Answer 1

/etc/asterisk/features.conf
;xfersound = beep ; to indicate an attended transfer is complete