SIP trunk keeps disconnecting

Well well well

They pointed me to this:

https://doc.pfsense.org/index.php/VoIP_Configuration

And what I noted is this:

A keep-alive or re-registration on the phone set for 20-30 seconds or so can also help, and is often a better solution.

So I tried to add these settings to my trunk:

qualify=yes
qualifyfreq=20
keepalive=20

But looking at the sip debug in CLI, I still get:

Expiry for XXX is 120 sec (Scheduling reregistration in 105 s)

How can I make it so everything is set up so Asterisk checks the connection every 20 seconds?