Примеры ошибок, обнаруженных с помощью диагностики V652
V652. Operation is executed 3 or more times in a row.
FreeSWITCH
V652 The '!' operation is executed 3 or more times in succession. mod_verto.c 3032
static switch_bool_t verto__modify_func(....)
{
....
switch_core_media_toggle_hold(session,
!!!switch_channel_test_flag(tech_pvt->channel, ....));
....
}