Ring Group ringback tone not playing

[njtsnet]

When a caller dials into the IVR and picks a ring group extension or dial a direct extension, the caller hears the randomized music on hold instead of the ringback tone.

Maybe I am missing a simple option, but can't seem to locate where to change this.

 

[AWS2P]

this is by 3CX design, call is already answered when on IVR, so transfer to RG is playing MOH.
If you call RG directly i assume you obtain ringback tone.

 

[YiannisH_3CX]

As @aws2p mentioned, the call is already answered by the IVR so once the transfer is initiated the caller will listen to the music on hold. The same thing happens when the target is an extension and not a Ring Group. You could potentially set the ringback tone as you music on hold but that will affect the entire system.