Daniel-Constantin Mierla writes:
Isn't setting the value to 0sec disabling the buffering?
yes, but
Note: setting this parameter to 0 when subs_db_mode is 3 keeps the old behaviour (sending NOTIFY requests immediately). This (old) behaviour is disabled by default in DB only mode because under load, when lots of NOTIFY requests can be sent on a dialog at the same time, there are race conditions which result in CSeq re-use.
in practise this means that DB only mode does not work no matter how the module vars are set.
-- juha