[Freeswitch-users] error sip 500

[Pieter Eduard]

Hi all,

Im trying to bridge 2 softswitch (sysmaster and mera mvts 2) using fs, i 
already setup the dialplan and external gateway in the sip profile but  
i'm having this  trouble when trying to send  call to the  mvts 2,  
sometime the call  could establish fine and the next minute the call to 
the same number failed with this error :

variable_proto_specific_hangup_cause: [sip:500]
variable_originate_disposition: [NORMAL_TEMPORARY_FAILURE]
variable_hangup_cause: [NORMAL_TEMPORARY_FAILURE]

what can cause this error? every failed call is never logged at the 
mvts2 box as like fs never sends the call but at the fs log i see that 
it already send the call to the right gateway (mvts2).

-Pieter-