Technical Report 069 (TR-069) is a document by the Broadband Forum that specifies the CPE WAN Management Protocol (CWMP). CWMP is a SOAP-based protocol for communication between an internet service provider auto configuration server (ACS) and customer-premises equipment (CPE). Features include auto-configuration, firmware image management, status and performance monitoring, and diagnostics.
See TR-069/CWMP (CPE WAN Management Protocol), and in particular the notes on security and http://www.broadband-forum.org/cwmp.php for more details.
TR-369 is the successor to the TR-069 protocol.