[Freeswitch-users] no billsec variable after sending fax

Hi, It is no billsec variable session variable after txfax and disconnect. In 10% of faxes I do send – the var is present, in rest 90% cases the var is absent((( Usually I do send fax with following settings: return_ring_ready=false ignore_early_media=true sip_cid_type=rpid origination_privacy=hide_name origination_caller_id_number=17772818674 sip_contact_user=17772818674 origination_caller_id_name=_undef_ autohangup=false absolute_codec_string='PCMU,PCMA,G729' fax_use-ecm=false fax_enable_t38=true fax_enable_t38_request=true fax_disable_v17=true fax_ident='blah’ fax_header='blah 2’ Version 1.5.15b git 3d64402 2015-03-21 19:55:21Z 64bit Any ideas? Thanks, Dmitry.