[Freeswitch-users] DTMF events issue

Hi, I am using ESL to listen to DTMF events.  In most part I can listen to these events and respond to them fine. However, when leg A attempts to bridge to leg B, and presses some keys whilst waiting for leg b to answer the call, no DTMF events are received.  When leg b answers the call all the DTMF events that leg A generated whilst waiting for leg B to answer are received in one batch. What am i doing wrong here? Is this normal behavour? surely not. Cheers Raf