Hi to all, the following is the last thing we see from Asterisk befor it crashes: $$$ find_chan_holded: No channel found for oad:017670014533 dad:7051538 --> ch->state CONNECTED, bc->holded 0 $$$ Bchan deActivated addr 51400101 --> cause 16 I SEND:RELEASE port:1 pid:88 mode:TE addr:51400101 --> l3id:20176 cause:16 ocause:16 oad2:017670015633 dad2:7051538 channel:1 port:1 BCHAN: DeACT Conf I IND :RELEASE_COMPLETE pid:88 mode:TE addr:51400101 port:1 --> l3id:20176 cause:-1 dad:7051538 oad:017670015633 channel:1 port:1 --> cause -1 * RELEASING CHANNEL pid:88 ctx:aixtema-incoming dad:7051538 oad:017670014533 state: CONNECTED --> * State Down --> Setting AST State to down * --> In State Default == Spawn extension (aixtema-incoming, 7051538, 1) exited non-zero on 'mISDN/1/017670014533-1' * --> Queue Hangup misdn_hangup called, without chan_list obj. Ouch ... error while writing audio data: : Broken pipe These crashes happen up to five times a day. We are pretty much clueless as to what is happening here. Any help is highly appreciated :-) Rgds, Philip.