Has anyone experienced an issue with fax (over SIP trunks) when after upgrading to 8.0? We recently upgraded our UC-520 to 8.0 and ever since then our faxes (both inbound & outbound) have not been working. The SIP messages show a 500 server error so it appears that a setting was changed somewhere after the upgrade. The fax machine is connected to FXS 0/0/0 and tried to change configs associated to that port but nothing has worked so far. Attached are the logs and pertinent voice configs.