CDR custom fields

[crm-hangup]
include => crm-hangup-custom
exten => s,1,Noop(Sending Hangup to CRM  ** ${PJSIP_HEADER(read,Call-ID)} ** )
same=>n,set(ID=${PJSIP_HEADER(read,Call-ID)})
same=>n,Set(ID=${CUT(ID,@,1)})
same=>n,Set(CDR(userfield)=${ID})