i've configured a trunk between cm and a avaya argent office pbx. i can make calls from outside (a gsm handy) through the trunk to a voip-phone (connected to the callmanager) --> everything is ok!
also the internal calls are ok (analog phones connected to the avaya pbx voip-phones connected to the cm)
if i try to do it in the other direction (voip-phone --> cm --> trunk
--> avaya pbx --> pstn --> gsm handy) the handy starts ringing but at the same moment the call is disconnected on the avaya pbx (monitoring tool installed). i can take the call on the handy (it rings for a longer time) but if i do so, there is no connection. is there a sinaling-problem? do i've to configure something special on the cm for austria?
has anybody an idea? thx for your help!