Rename switch_hash_first() and switch_hash_next() to switch_core_hash_first() and switch_core_hash_next() and deprecate the older versions.

FS-4676 going over the traces the only thing I can guess is that you may have some race condition on the speed of your box or something regarding the db,  Try this patch that may help

FS-4656 --resolve with this patch the bug is fixed but also the old behaviour of setting this variable on the A leg expecting it to auto-set it on the B leg is no longer supported.  It must be exported or put in the dialstring with {} to put it on the B leg going forward

auto-answer A leg when B leg is already answered in all conditions not just when A leg is both unanswered and has no media

scripts/trace/sipgrep: correctly interpret option -C (print ANSI colors in debug file only when option -C is defined)

Assuming, just because it is MSVC, that the standard integers are not defined, is not correct. Need to test for define _STDINT as well as later versions of MSVC (>= VS2010) do have stdint.h