NetFixerFrom my cold dead handsPremiumReviews:
TR-069 is a remote modem management tool used by AT&T to remotely change settings and upgrade firmware in the modem.
I don't know which modem you are currently using, but in the Motorola/Netopia modems you can disable it from a telnet command line. The commands below are only possible if your Motorola/Netopia modem supports using the telnet interface (and newer SBC inspired modems don't). I do not currently have access to a 2wire modem, so I can't tell you how to disable remote ISP management (or if it is possible).
set dslf-cpewan option off
set dslf-lanmgmt option off
However, I think that it is clear from your previous posts that your DSL disconnects are because of the audible noise you can hear on your line, not from frequent updates and reboots from the TR-069 server (those should typically be spaced at least several months apart anyway).
OTOH, I have always disabled any remote access from the ISP whenever possible because I prefer to decide when to upgrade the firmware in my CPE devices, when to make configuration changes, and when to reboot them.
We can never have enough of nature.
We need to witness our own limits transgressed, and some life pasturing freely where we never wander.