whoa!! it works the fault was my ignorance of extension.conf<br><br>i modified the Marco advice in:<br><br>[from-zaptel]<br>exten=> _X.,1,Dial(SIP/${EXTEN})<br>exten=> _X.,2,hangup<br><br>so i can correctly call the astersik extension.
<br><br>many many thanks all<br>Bivio<br><br>