Hi,
we had some problems with a lot of units that we had installed to our costumer.
In particular the most problems seems to be related to FXS ports and the status of the port that remain locked in invalid status.
In particular if a people make a call and than hang up the call, the status is :
FXS 1 Hook State Off
FXS 1 Port Status Connected
but as you can see in log the hook is on, but the line result unaivable
System release 4.3.3
<Tue Dec 12 16:04:48 2017> goahead[18526]: User:admin Web Login. IP: xx.xx.xx.xx
<Tue Dec 12 16:09:41 2017> ipphone[18368]: Compress 11 Messages
<Tue Dec 12 16:09:41 2017> ipphone[18368]: channel=0, ON_HOOK
<Tue Dec 12 16:09:41 2017> ipphone[18370]: call with [][0586xxxxx] end
<Tue Dec 12 16:09:41 2017> ipphone[18371]: Close RtpChan(0 0)
<Tue Dec 12 16:09:44 2017> ipphone[18384]: 0 Register OK expires= 57
<Tue Dec 12 16:13:20 2017> ipphone[18384]: Compress 3 Messages
<Tue Dec 12 16:13:20 2017> ipphone[18384]: InCall line 0 Caller 0586xxxxx Callee 0586xxxxx
<Tue Dec 12 16:13:20 2017> ipphone[18370]: CallState: Rcv 3 for No Call avail
<Tue Dec 12 16:13:32 2017> ipphone[18384]: 0 Register OK expires= 57
<Tue Dec 12 16:14:04 2017> ipphone[18384]: InCall line 0 Caller 0586xxxxx Callee 0586xxxxx
<Tue Dec 12 16:14:04 2017> ipphone[18370]: CallState: Rcv 3 for No Call avail
<Tue Dec 12 16:14:29 2017> ipphone[18384]: 0 Register OK expires= 57