public virtual void OnDtmfReceived(
	DtmfInfo dtmf
)

Public Overridable Sub OnDtmfReceived ( 
	dtmf As DtmfInfo
)

public:
virtual void OnDtmfReceived(
	DtmfInfo^ dtmf
)

abstract OnDtmfReceived : 
        dtmf : DtmfInfo -> unit 
override OnDtmfReceived : 
        dtmf : DtmfInfo -> unit