i am using 8369 with am detection .
exten => 8369,1,AGI(
agi://127.0.0.1:4577/call_log)
exten => 8369,2,AMD(2500|1500|300|5000|120|50|5|256)
exten => 8369,3,AGI(VD_amd.agi,${EXTEN})
exten => 8369,4,AGI(agi-VDAD_LB_transfer.agi,${EXTEN})
exten => 8369,5,AGI(agi-VDAD_LB_transfer.agi,${EXTEN})
exten => 8369,6,AGI(agi-VDAD_LB_transfer.agi,${EXTEN})
exten => 8369,7,Hangup
exten => h,1,DeadAGI(
agi://127.0.0.1:4577/call_log)
exten =>h,2,DeadAGI(
agi://127.0.0.1:4577/VD_hangup--HVcause ... EBUG-----${HANGUPCAUSE}-----${DIALSTATUS}-----${DIALEDTIME}-----${ANSWEREDTIME}))
problem is not with vicidial i think . Also in cdr logs i am getting disposition for some calls as FAILED so i think this is some voip problem at my side .