[Freeswitch-users] Freeswitch don't send keepalive

[Tanguy]

Hello

I'm a asterisk user, and i would like to try freeswitch for having a 
real multi tenant system. I configured FS with fusionpbx. My FS is 
installed on a VPS ( has a public IP ), my extensions are behind a nat 
router.

After few minutes my phone became unreachable for inbound call. After a 
outbound call, the phone is again reachable for few minutes.

I captured the traffic on server side with tcpdump, unlike my asterisk 
server, freeswitch never send to the phone a keepalive packet ( SIP 
OPTIONS )

I added theses options in sip_profiles/internal.xml

<param name="aggressive-nat-detection" value="true"/>
<param name="enable-timer" value="false"/>
<param name="NDLB-received-in-nat-reg-contact" value="true"/>
<param name="NDLB-force-rport" value="true"/>
<param name="NDLB-broken-auth-hash" value="true"/>
<param name="sip-force-expires" value="240"/>
<param name="all-reg-options-ping" value="true"/>
<param name="registration-thread-frequency" value="30"/>
<param name="unregister-on-options-fail" value="true"/>
<param name="nat-options-ping" value="true"/>

Please note the strange expiry delay. After being powered off, the phone 
stays registered.

freeswitch at internal> sofia status profile internal reg

Registrations:
=================================================================================================
Call-ID:        24ef-c0a80101-5-1 at 192.168.0.10
User:           7082 at mydomain
Contact:        "" 
<sip:7082 at 192.168.0.10:5090;transport=udp;user=phone;fs_nat=yes;fs_path=sip%3A7082%4086.201.x.x%3A5090%3Btransport%3Dudp%3Buser%3Dphone>
Agent:          THOMSON ST2030 hw5 fw2.76 00-14-7F-00-4C-1A
Status:         Registered(UDP-NAT)(unknown) EXP(1907-10-11 18:28:34) 
EXPSECS(909113102)
Ping-Status:    Reachable
Host:           vpsxxxxxx.ovh.net
IP:             86.201.x.x
Port:           5090
Auth-User:      7082
Auth-Realm:     mydomain
MWI-Account:    7082 at mydomain

Any idea ?

Best regards