IAX and SIP Qualify frequency

General Help
1

Is below assumption correct?

When changing the qualify frequency on a trunk I need this in peer details:

SIP Trunk:
qualify=yes,
qualifyfreq=value in seconds

On an IAX trunk I need this:
qualify=yes,
qualifyfreqok=value in milliseconds

2

When wondering about Asterisk config options, head right for the source:

The sample IAX config has these lines:

;qualifyfreqok = 60000      ; How frequently to ping the peer when everything
                            ; seems to be OK, in milliseconds.
;qualifyfreqnotok = 10000   ; How frequently to ping the peer when it's either
                            ; LAGGED or UNAVAILABLE, in milliseconds.