iax2 and sip refresh interval

Hi all,

  I have a doubt about iax2 and sip refresh intervals . When I run the command # iax2 (sip)show registry , it shows a refresh of 60  for iax2 and 23 for sip. Is this is 60 seconds or 60 minutes ? and why this is set to 60 for iax2 and 23 for sip , how I can change the default refresh interval for sip and iax2 ?

Any help to understand these doubts will be appreciated .