Notify pjsip asterisk 16

Hello, I did migration of 300 softphone’s for Asterisk 16 with PJSIP,

This softphone dont response NOTIFY from asterisk, and after some seconds the register of softphone drops.

Exists some configuration for asterisk dont send NOTIFY between 4 and 4 seconds ?

I got the same issue where AOR was not rechable, and I fixed adding the correct configuration for NAT support on the endpoint section

[transport-udp]
type=transport
protocol=udp
bind=0.0.0.0:5065
local_net=192.168.0.0/8

[6001]
type=endpoint
context=internal
disallow=all
allow=ulaw
auth=6001
aors=6001
direct_media=no
rtp_symmetric=yes
force_rport=yes
rewrite_contact=yes  ; necessary if endpoint does not know/register public ip:port
ice_support=yes   ;This is specific to clients that support NAT traversal
send_pai=yes
transport=transport-udp

[6001]
type=auth
auth_type=userpass
password=193012@
username=6001

[6001]
type=aor
max_contacts= 2
qualify_frequency=1    ; Interval at which to qualify an AoR (default: "0")
authenticate_qualify=no
remove_existing=yes
maximum_expiration=7200        ; Maximum time to keep an AoR (default: "7200")
minimum_expiration=6000  ; Minimum keep alive time for an AoR (default: "60")
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I solved my problem disabling mailbox in my endpoints. When disabled mailbox, the asterisk stop send notify