[Asterisk-Users] Exception flag set on, but no exception handler

[Ing. Jose Chiantera]

Hi

When I make a call from the outside to asterisk and the call is asnwered, 
all is OK, but when I make a call from the outside to asterisk and hangup 
before the call is answered by a astesrisk extension, you can see in the 
console this message

Jul  6 19:33:08 WARNING[10037]: channel.c:1521 ast_read: Exception flag set 
on 'UniCall/2-1', but no exception handler
Jul  6 19:33:08 WARNING[10037]: channel.c:1521 ast_read: Exception flag set 
on 'UniCall/2-1', but no exception handler
.
.
.
Jul  6 19:33:08 WARNING[10037]: channel.c:1521 ast_read: Exception flag set 
on 'UniCall/2-1', but no exception handler
Jul  6 19:33:08 WARNING[10037]: channel.c:1521 ast_read: Exception flag set 
on 'UniCall/2-1', but no exception handler

and the message is repeted and the extension continue ringing forever, until 
you offhook the extension

Any idea

Thanks
Jose chiantera