Исправлено. В extensions_override_freepbx.conf изменил блок [func-apply-sipheaders] include => func-apply-sipheaders-custom exten => s,1,Noop(Applying SIP Headers to channel) exten => s,n,Set(FROM_DID1=${FROM_DID}) exten => s,n,ExecIf($[${LEN(${FROM_DID})}=6]?Set(FROM_DID1=8111${FROM_DID})) exten =>...