The attached trace shows what seems to be an erroneous condition in hunt list processing.
This customer of ours has an Inbound Route, which is a list of schedule-based time handlers. On this call (which was Tuesday, yesterday) the Tuesday hunt list was executed.
This particular hunt list is set to ring one extension for 6 seconds.
As you can see in the trace, the extension was answered quite quickly (3-4 seconds), but then app_macro.c reports "Spawn extension exited non-zero", and the call drops.
This was the third of four calls. The first three calls all failed in precisely the same way.
The fourth call worked.
PBX Manager 188.8.131.52
Linux thirdlane-03.forethought.net 2.6.18-194.17.1.el5PAE #1 SMP Wed Sep 29 13:31:51 EDT 2010 i686 i686 i386 GNU/Linux