Hylafax stop answering

Francesco Rosati <[email protected]> Mon, 11 Dec 2017 17:04:36 +0100

Newsgroups	gmane.comp.telephony.fax.hylafax.user
Message-ID	<[email protected]>

Hi all,
Suddenly, my Hylafax server running for almost 7 years stop answering.
When Ringing - faxstat says "Running and idle"
I use faxgetty-ttyS0.service in /etc/systemd/system folder
if i try faxanswer from command line, the modem answer correctly.
Hylafax version is 6.0.4 on fedora 15

What can i check ?
Thank You

Francesco