You must add answer-supervision=yes in your freetdm.conf.xml
         Also added dial-timeout parameter which was previously hard-coded

         Handle driver events while reading media

         ftmod_analog_em:
         Initialize read data len to avoid crashing when
         the freetdm read function does not read anything

FS-4886 --resolve the file permisions must be set properly by you, you must have installed it as root then changed users.  This patch will fix the crash.

I've also added the CC-Agent-Called-Time and CC-Agent-Aborted-Time in case you find this useful also.