I change the autoprovision to http://pbx.domain.com:84
and boom.
64.53.188.39 - - [06/Oct/2017:10:40:56 -0500] "GET /001565649346.boot HTTP/1.1" 404 215 "-" "Yealink SIP-T46G 28.82.0.20 00:15:65:64:93:46"
64.53.188.39 - - [06/Oct/2017:10:40:56 -0500] "GET /y000000000000.boot HTTP/1.1" 404 216 "-" "Yealink SIP-T46G 28.82.0.20 00:15:65:64:93:46"
64.53.188.39 - - [06/Oct/2017:10:40:56 -0500] "GET /y000000000028.cfg HTTP/1.1" 200 10433 "-" "Yealink SIP-T46G 28.82.0.20 00:15:65:64:93:46"
64.53.188.39 - - [06/Oct/2017:10:40:58 -0500] "GET /T46-28.82.0.20.rom HTTP/1.1" 200 23234624 "-" "Yealink SIP-T46G 28.82.0.20 00:15:65:64:93:46"
64.53.188.39 - - [06/Oct/2017:10:41:02 -0500] "GET /001565649346.cfg HTTP/1.1" 200 4421 "-" "Yealink SIP-T46G 28.82.0.20 00:15:65:64:93:46"